Louisiana Suggested Chemical Weed Control Guide - AgFax

2007 

Louisiana 

Suggested Chemical 

Weed Control Guide

LOUISIANA'S SUGGESTED CHEMICAL WEED 

CONTROL GUIDE FOR 2007 

TABLE OF CONTENTS 

INTRODUCTION .........................................................................................................................................2 

WEB ADDRESSES FOR CHEMICAL COMPANIES ...................................................................................4 

AQUATICS ...................................................................................................................................................7 

BURNDOWN ..............................................................................................................................................10 

WEED CONTROL RATINGS OF BURNDOWN HERBICIDES...................................................................13 

PLANT-BACK RESTRICTIONS OF BURNDOWN HERBICIDES..............................................................14 

CONTROL OF VOLUNTEER ROUNDUP READY CROPS ........................................................................14 

COMMERCIAL NURSERY STOCK ..........................................................................................................15 

CORN ..........................................................................................................................................................20 

COTTON .....................................................................................................................................................29 

CRAWFISH PRODUCTION AND RICE HERBICIDES .............................................................................38 

PASTURE AND FORAGES ........................................................................................................................39 

FRUIT CROPS ............................................................................................................................................43 

GRAIN SORGHUM ....................................................................................................................................52 

HERBICIDE RESISTANCE ........................................................................................................................54 

HOME GARDENS ......................................................................................................................................55 

LAWNS AND OTHER TURF AREAS ........................................................................................................56 

NONCROPLAND (perennial, broadleaf and grass weeds, poison ivy and other vines) ..................................64 

OATS, WHEAT, BARLEY, & RYE ............................................................................................................66 

PEANUTS ...................................................................................................................................................67 

RICE ............................................................................................................................................................69 

SOYBEANS ................................................................................................................................................75 

SUGARCANE .............................................................................................................................................85 

VEGETABLE CROPS ...............................................................................................................................100 

WOODY PLANTS (forestry) .....................................................................................................................127 

HERBICIDE PREMIXES ..........................................................................................................................129 

RECROP INTERVALS FOR VARIOUS HERBICIDES ............................................................................131 

CALIBRATION PROCEDURES ...............................................................................................................135 

NOZZLE TYPES.........................................................................................................................................137 

DRIFT REDUCTION ..................................................................................................................................138 

COMMON AND CHEMICAL NAMES OF HERBICIDES ........................................................................139 

CONVERSION FACTORS ........................................................................................................................146 

RAIN-FREE REQUIREMENTS OF SELECTED HERBICIDES ...............................................................147 

RELATIVE TOXICITY OF HERBICIDES TO MAMMALS .....................................................................148 

Should the registration of a herbicide or certain uses of a herbicide be canceled by federal or state agencies, 

recommendations thus affected herein are no longer applicable after such action is taken. Use of products in this 

handbook does not constitute a guarantee or warranty of the products named and does not signify that these products 

are approved to the exclusion of comparable products.

INTRODUCTION 

2 

2007 Louisiana Suggested Weed Control Guide 

Herbicide rates are for broadcast application unless specified differently in the table heading for each 

crop. Conversion tables are provided to aid in converting large volumes, such as quarts and gallons, to 

ounces, tablespoons and teaspoons. 

Rates of soil-applied herbicides vary according to soil types because soils can affect herbicide activity. 

The lower rate is for sandy loams (light), intermediate rate for silt loams (medium) and the higher rate for 

clay loam and clay (heavy) soils. In some instances the same rate may be suggested for both medium 

and heavy soils. 

Herbicides should be applied in enough water to assure distribution over the area treated. That amount 

may vary from 5 to 40 gallons per acre on a broadcast basis. Wettable powder formulations require at 

least 50 mesh screens throughout the spray system and nozzle tips with a capacity of 0.2 gpm or larger. 

Considerable agitation is necessary to keep wettable powders in suspension. 

Hardened stainless steel and nylon nozzles are more resistant to wear from the application of wettable 

powders than brass nozzles. 

Tanks made of aluminum, fiberglass or other corrosion-resistant materials will reduce the amount of 

nozzle clogging. Some herbicides may not be used in unlined steel tanks. Be sure that the water used 

as the spray solution is free from trash and other foreign material, particularly mud or soil particles. 

Correct calibration is of utmost importance. Excess rates may cause injury to the applied crop, injury 

from excess residue to succeeding crops and increased herbicide costs. Less than recommended rates 

can result in unsatisfactory weed control. Read the label and know that you are applying only the 

recommended amount. 

RESTRICTED USE PESTICIDES 

Some of the pesticides or certain uses of pesticides in this publication may be classified for restricted 

use. Those pesticides with restricted use labels will contain information regarding these restrictions. Be 

sure to read all labels thoroughly. It is illegal to use any pesticide in a manner that is inconsistent with the 

label directions. It is unlawful for a noncertified applicator to use a pesticide that has been classified with 

restricted uses. Information on pesticide applicator certification programs may be obtained from the 

Louisiana Cooperative Extension Service. 

If herbicides are handled or applied improperly, or if unused portions are not disposed of safely, they may 

be injurious to humans, domestic animals, desirable plants and fish or other wildlife and may contaminate 

water supplies. Use herbicides only when needed, and handle them with care. Follow the directions, 

and heed all precautions on the container label.

DIFFERENT TYPES OF HERBICIDE REGISTRATIONS 

3 


Additional herbicides for crop production have been introduced in the recent past and likely will be 

in the foreseeable future. During this time of change, growers will be introduced to terminology that has 

very specific meanings toward the development and use of these additional herbicides. The purpose of 

this section is to introduce, list and explain the definition and implications of this terminology and to 

promote increased grower understanding that may aid in complying with state and federal pesticide laws. 

HERBICIDE LABELS 

The State and federal agencies regulate herbicide use through the issuance of herbicide labels, 

which are the directions for herbicide use and have the effect of Federal law. Each herbicide is identified 

under various “sections” or parts of the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA). 

FIFRA is the federal law that addresses, among other things, how a herbicide may be used. Contained 

within FIFRA are the sections that deal with specific situations. Three types of labels, each addressed by 

a specific Section of FIFRA, herbicide users should understand. 

SECTION 3 – The most comprehensive registration granted. This registration shows the USEPA 

(United States Environmental Protection Agency) has reviewed and approved all required information to 

support all uses listed on the product label. 

SECTION 24[c] – Granted by the state under Federal regulation and often called a “special local 

need” label. A 24[c] label applies only to the state or states that issue the label and is issued for a 

specific use pattern for crops or sites already approved under a Section 3 label. This label has a time 

period of use (usually 5 years), which may be renewed. 

SECTION 18 – An Emergency Exemption label is petitioned to the USEPA through the state to 

control a specific weed problem not adequately addressed by any Section 3-labeled herbicides and poses 

a threat to crop production. Before determining issuance of a Section 18 label, each Section 18 petition is 

scrutinized by USEPA. If the label is issued, herbicide use is very clearly defined. If the USEPA does not 

approve the Section 18 petition, the state may issue a Crisis Exemption and allow use of the herbicide. In 

all cases, Section 18 labels are temporary and expire within 1 year of issuance. 

SUMMARY 

Different types of labels allow herbicide use under varying conditions. It is important for herbicide 

users to understand this part of the herbicide registration process, the results and how those results affect 

herbicide use. Much more information is available at the Internet sites listed below. 

USEPA Office of Pesticide Programs http://www.epa.gov/pesticides/ 

FDA (Food and Drug Administration) www.fda.gov/ 

USDA Extension Service http://www.csrees.usda.gov/ 

Louisiana Weed Science Recommendation Committee* 

P. Roy Vidrine, Professor, Dean Lee Research Station James L. Griffin, Professor, Agronomy 

Dearl E. Sanders, Professor, Idlewild Research Station Eric P. Webster, Professor, Agronomy 

Ron E. Strahan, Assistant Professor, Agronomy Donny K. Miller, Associate Professor, Northeast Research Station 

Thomas J. Koske, Professor, Horticulture Bill J. Williams, Associate Professor, Northeast Research Station 

Allen D. Owings, Associate Professor, Horticulture Eddie P. Millhollon, Associate Professor, Red River Res. Station 

James E. Boudreaux, Professor, Horticulture Alexander (Sandy) Stewart, Assoc. Prof., Dean Lee Research Station 

Johnny K. Saichuk, Professsor, Southwest Region 

David Y. Lanclos, Assistant Professor, Central Region 

*This guide was edited and updated in 2006 by Steve 

Kelly, presently with Scotts Company in Florida.

Chemical Company Web Site 

Useful Internet Sites 

Agriliance http://www.agriliance.com 

Amvac Chemical Company http://www.amvac-chemical.com 

BASF Ag Products http://www.agproducts.basf.com 

Bayer CropScience http://www.bayercropscienceus.com 

Cheminova http://www.cheminova.us.com 

Crompton/Uniroyal Chemical (Chemtura) http://www.cromptoncorp.com 

Dow AgroSciences http://www.dowagro.com 

Drexel Chemical Co. http://www.drexchem.com 

DuPont http://www.cropprotection.dupont.com 

FMC http://www.cropsolutions.fmc.com 

Gowan http://www.gowanco.com 

Griffin LLC http://www.dupont.com/ag/griffinllc/index.html 

Helena Chemical http://www.helenachemical.com 

Micro Flo http://www.microflocompany.com 

Monsanto http://www.monsanto.com 

NuFarm Turf & Specialty http://www.ag.us.nufarm.com 

PBI Gordon http://www.pbigordon.com 

Syngenta Crop Protection http://www.syngenta-us.com 

Syngenta Professional Products http://www.syngentaprofessionalproducts.com 

UAP http://www.uap.com 

Valent USA http://www.valent.com 

Vance Crop Division (T & O) http://www.greenbook.net 

Vance Crop Division (Crop Protection) http://www.greenbook.net 

Wilbur-Ellis http://www.wilbur-ellis.com 

4 


An excellent web site is: http://www.cdms.net lists over 70 chemical manufacturers, their labels and MSDS. 

Weed Identification 

Illinois Council on Food and Agricultural Research http://web.aces.uiuc.edu/weedid 

Texas A&M Vascular Plant Gallery http://www.csdl.tamu.edu/FLORA/gallery.htm 

Iowa State Weed ID Resources http://www.weeds.iastate.edu/weed-id/weedid.htm 

Photo Herbarium - WSSA http://www.wssa.net/photos.html 

Weeds of No-Till Systems - Purdue Univ. http://www.btny.purdue.edu/Extension/Weeds/NoTillID/NoTillWeedID1.html 

Common Weed Seedlings of Michigan http://www.msue.msu.edu/msue/iac/e1363/e1363.htm 

Virginia Tech Weed ID http://www.ppws.vt.edu/weedindex.htm 

Weed Pictures from LSU AgCenter http://www.lsuagcenter.com/ 

Colorado Weed Management Association http://www.cwma.org 

Illustrated Guide to Arizona Weeds http://www.uapress.arizona.edu/onlinebks/weeds/titlweed.htm 

New Jersey Weed Gallery http://www.rce.rutgers.edu/weeds/default.asp 

FMC Weed & Pest Solutions http://cropsolutions.fmc.com/InsectsandWeeds/tabid/869/Default.aspx 

Harmful/Poisonous Plants 

U. S. Army Poisonous Plants http://chppm-www.apgea.army.mil/ento/PLANT.HTM 

Poisonous Plants of Indiana http://vet.purdue.edu/depts/addl/toxic/cover1.htm 

Cornell Poisonous Plants Home Page http://www.ansci.cornell.edu/plants 

Pennsylvania Poisonous Plants http://cal.vet.upenn.edu/poison/index.html

Herbicide Injury/Symptomology 

5 


University of Illinois http://www.extension.umn.edu/distribution/cropsystems/DC3832.html 

Herbicide Injury on Corn and Soybeans http://www.btny.purdue.edu/Extension/Weeds/Herbinj/InjuryHerb1.html 

University Extension Sites 

Alabama Auburn Univ. http://www.aces.edu 

Arizona U. Arizona http://ag.arizona.edu/extension 

Arkansas U. Arkansas http://www.uaex.edu 

California U. California http://www.ipm.ucdavis.edu 

Colorado Colorado State U. http://www.ext.colostate.edu 

Connecticut U. Connecticut http://www.hort.uconn.edu/ipm/index.html 

Florida U. Florida http://edis.ifas.ufl.edu 

Georgia U. Georgia http://extension.caes.uga.edu 

Idaho U. Idaho http://info.ag.uidaho.edu 

Indiana Purdue U. http://www.agriculture.purdue.edu/agcomm 

Iowa Iowa State U. http://www.extension.iastate.edu 

Kansas Kansas State U. http://www.oznet.ksu.edu 

Kentucky U. Kentucky http://www.ca.uky.edu/ces 

Louisiana Louisiana State U. http://www.lsuagcenter.com 

Maine U. Maine http://www.umext.maine.edu 

Maryland U. Maryland http://www.agnr.umd.edu/MCE/index.cfm 

Michigan Michigan State U. http://www.msue.msu.edu/home 

Minnesota U. Minnesota http://www.extension.umn.edu 

Mississippi Mississippi State U. http://msucares.com 

Missouri U. Missouri http://outreach.missouri.edu 

Nebraska U. Nebraska http://www.ianr.unl.edu 

New Hampshire U. New Hampshire http://www.ceinfo.unh.edu 

New Mexico New Mexco State U http://www.cahe.nmsu.edu/pubs 

North Carolina North Carolina State http://www.ces.ncsu.edu 

North Dakota North Dakota State http://www.ext.nodak.edu 

Ohio Ohio State U. http://ohioline.osu.edu 

Oklahoma Oklahoma State U. http://osuextra.okstate.edu 

Pennsylvania Pennsylvania State U http://cropsoil.psu.edu/Extension/Extension.html 

Rhode Island U. Rhode Island http://www.edc.uri.edu 

South Carolina Clemson U. http://www.clemson.edu/extension 

Tennessee U. Tennessee http://www.utextension.utk.edu 

Texas Texas A&M U. http://www.texasextension.tamu.edu 

Utah Utah State U. http://extension.usu.edu 

Vermont U. Vermont http://www.uvm.edu/~uvmext 

Virginia Virginia Tech http://www.ext.vt.edu/resources 

Washington Washington State U. http://ext.wsu.edu 

Wisconsin U. Wisconsin http://www.uwex.edu 

Wyoming U. Wyoming http://uwadmnweb.uwyo.edu/UWCES

Societies 

Aquatic Plant Management Society http://www.apms.org 

Canadian Weed Science Society http://www.cwss-scm.ca 

International Weed Science Society http://www.olemiss.edu/orgs/iws/DEFAULT.HTM 

Northeastern Weed Science Society http://www.newss.org 

North Central Weed Science Society http://www.ncwss.org 

Southern Weed Science Society http://www.swss.ws 

Weed Science Society of America http://wssa.net 

Western Aquatic Plant Management Society http://wapms.org 

Western Society of Weed Science http://www.wsweedscience.org 

Commodity Pages 

6 


American Corn Growers Association http://www.acga.org 

National Cotton Council http://www.cotton.org 

American Soybean Association http://www.asasoya.org 

American Soybean Association http://www.amsoy.org 

U. S. Rice Federation 

http://www.usarice.com 

Cotton Incorporated http://www.cottoninc.com 

Cotton Board http://www.cottonboard.org 

Cotton USA http://www.cottonusa.org 

United Soybean Board http://www.talksoy.com 

LSU AgCenter Soybean Information Page http://www.lsuagcenter.com/en/crops_livestock/crops/soybeans/ 

LSU AgCenter Corn Information Page http://www.lsuagcenter.com/en/crops_livestock/crops/corn/ 

LSU AgCenter Cotton Home Page http://www.lsuagcenter.com/en/crops_livestock/crops/Cotton/ 

LSU AgCenter Wheat & Oats Home Page http://www.lsuagcenter.com/en/crops_livestock/crops/WheatOats/ 

LSU AgCenter - Louisiana Forages http://www.lsuagcenter.com/en/crops_livestock/livestock/pasture_forage/ 

LSU AgCenter Sorghum Information Page http://www.lsuagcenter.com/en/crops_livestock/crops/Sorghum/ 

Louisiana Ag Summary http://www.lsuagcenter.com/en/communications/publications/Publications+Catal 

og/Money+and+Business 

LSU AgCenter Rice Home Page http://www.lsuagcenter.com/en/crops_livestock/crops/rice/ 

International Rice Research Institute http://www.irri.org 

Rice Web http://www.riceweb.org 

Rice Online http://www.riceonline.com 

Audubon Sugar Institute http://www.lsuagcenter.com/Inst/Research/Departments/audubonsugar 

Sugar Knowledge International http://www.sucrose.com

Type of Aquatic 

Weed or Site 

Herbicide 

Rate/Acre 

Time to Apply 

FLOATING WEEDS (unattached, tops above water) 

Floating mats of 

alligatorweed, and 

water hyacinth 

Duckweeds, 

water hyacinth, and 

water lettuce 

Duckweeds, water 

hyacinth 

2,4-D amine 

4.0 lb/A in 

100 gal water 

Diquat/ Reward 

up to 1.0 gal/A 

+ 1.0 qt of 

surfactant/100 

gallons of water 

Habitat 

2-3 pts/A 

+ 0.25 % 

nonionic surfactant 

Water hyacinth Rodeo or 

Aquamaster 

4.0-6.0 pt/A plus 

0.5% 

approved 

surfactant 

Common or giant 

salvinia 


salvinia 

Diquat/Reward 1.0 

gal/A as a low or 

high volume spray 

plus 0.5% 

approved 

surfactant 

Aquamaster 

2.0% v/v spray to 

wet plus 0.5% 

approved 

surfactant 

On foliage when 

weeds 

are actively 

growing 

AQUATIC WEEDS 

Ponds and Lakes 

Remarks 

7 


Spray to uniformly wet foliage. Add ¼ % approved nonionic 

surfactant. Repeat in 4 to 6 weeks. Avoid use in waters used for 

irrigation. 

Same as above Apply as a surface spray. Follow label for water restrictions after 

application. 

When weeds are 

actively growing 

Follow potable and irrigation water restrictions. Must be applied by 

certified commercial applicator only. 

Water hyacinth Rodeo or Aquamaster 4.0-6.0 pt/A plus 0.5% approved surfactant. 


salvinia 

1.0 gal/A as a low or high volume spray plus 0.5% approved 

surfactant 

2.0% v/v spray to wet plus 0.5% approved surfactant. 

NOTE: A ft (acre foot) = volume of water in an area having 1 acre of surface and a depth of 1 foot. 

EMERSED AND MARGINAL WEEDS (rooted under water, tops above water, or growing on wet soil) 

Broadleaf species 

(Arrowhead, lotus, 

smartweed, 

spatterdock, 

spikerush, 

waterprimrose, 

white water lily, 

yellow water lily) 

Many grasses, 

rushes, sedges and 

broadleaf weeds. 

Especially useful for 

controlling trees and 

brush in water. 

2,4-D low volatile 

ester (LVE) at 

4.0 lb/A in 100 gal 

water 

Habitat 

1-6 pts/A plus 

0.25% nonionic 

surfactant 

On foliage when 

weeds 

are 


When weeds and 

woody plants are 


Spray to uniformly wet foliage. Add 10% fuel oil by volume or 1.0 qt. 

surfactant to spray mix. More than one application may be required 

for control of some species. Avoid use in waters for crop irrigation. 

Follow potable and irrigation water restrictions. Must be applied by 

certified commercial applicator only.

Type of Aquatic 

Weed or Aquatic 

Site 

Herbicide 

Rate/Acre 

Time to Apply 

Remarks 

8 


EMERSED AND MARGINAL WEEDS (rooted under water, tops above water, or growing on wet soil), continued 

Broadleaf weeds, 

grasses and weedy 

species. (cattail, 

maidencane, 

smartweed, 

spatterdock, willow 

and others) 


brush and trees 

Rodeo or To actively 

Aquamaster growing 

1.5-7.5 pt/A weeds 

broadcast or 0.75- 

1.5% in spray to 

wet equipment plus 

0.5% label 

approved 

surfactant 

Renovate 3 

2 to 8 qt/A in 20 to 

200 gal water 

Water hyacinth, 

alligatorweed, 

water primrose, 

many tree 

species 

SUBMERSED WEEDS (tops mostly underwater, usually rooted or anchored) 

Algae 

(scums and mosses) 

Coontail, fanwort, 

milfoil, pondweeds 

Coontail, fanwort, 

milfoil, hydrilla, 

elodea, naiad, 

pondweeds 

Coontail, naiad, 

milfoil, giant salvinia, 

common salvinia. 

Coontail, naiads, 

milfoil 

Copper sulfate 

2.0 - 3.0 lb/A ft of 

water 

Endothall Aquathol 

liquid 1.0 - 2.0 gal 

Aquathol Granular 

125 lb–250 lb/A 

(water 4-6 ft) 

Sonar 5P 

10-20 lb/surfaceacre 

Sonar AS 

1.0-2.0 pt/surfaceacre 

Avast (see label for 

specific rates) 

Diquat or Reward 

1.0 - 2.0 

gal/surface-acre 

Aqua-Kleen 

granules 

100-200 lb/A 

See label for proper stage of growth. No restrictions on the use of 

the water. Do not apply within 0.5 miles upstream of potable water 

intakes or in tidewater areas 

Can be applied to impounded water only, not to flowing streams. 

Apply by air or ground. Add an approved aquatic surfactant at 0.5%. 

Bloom Apply crystals or powder at any stage of algae growth by any 

method to give rapid and uniform distribution. Repeat as necessary 

to maintain control. Treat only a portion of the pond at once. Apply 

3.0 lb/A ft. in ponds with soft water. 

Active growth 

stage 

Active growth 

stage 

Same as above 

Same as above 

Active growth 

stage 

Apply after weeds 

begin to grow in 

spring 

Can be injected into the upper end of the pond or sprayed over 

surface of pond. Do not use fish for 3 days after treatment. Can be 

used for other uses within 7 days after treatment. Read the label. 

Slow kill. Effective against most rooted plants. If water is deeper 

than 6 feet, increase rate by 50%. 

Slow kill. See label for depth vs rate. 

Apply as a direct pour or subsurface injection. Short residual. Water 

may be used for irrigation 5 days after treatment. 

Granular 2,4-D. Do not apply to water used for agricultural use or 

potable water supplies. Excellent for treating around docks, 

landings, etc.

Use Restrictions for Treated Water (number of days) 

Herbicide Drinking Swimming 

9 


Human Animal Irrigation 

Fish 

Consumption Drinking Turf Forage 

Aquathol Granular 7 1 0 7 0 7 7 

Aquathol K 7-25 1 0 7-25 0 7-25 7-25 

Copper complexes 0 0 0 0 0 0 0 

Copper sulfate 0 0 0 0 0 0 0 

Dichlobenil a - - 90 b - - - - 

Diquat/Reward 2 0 0 1 2 5 5 

Habitat 2 0 0 0 120 g 120 g 120 g 

Hydrothol 7-25 1 0 7-25 7-25 7-25 7-25 

Rodeo/Glypro 0 0 0 0 0 0 0 

Sonar/Avast - e 0 0 0 30 d 30 d 30 d 

2,4-D 21 e - - 21 e 21 e 21 21 e,f 

a do not use in human, animal, or irrigation water 

b not recommended for use in commercial fishing areas 

c see label for distance allowed from potable water intakes 

d restriction suggested by manufacturer 

e shorter interval may be used depending on amount of 2,4-D acid present 

f do not use on irrigation ditches 

g or until residues =1.0 ppb 

Food 

Crops

BURNDOWN 

INTRODUCTION 


Conservation tillage systems, whether no-till or stale seedbed, require herbicide programs that 

successfully control native winter vegetation or planted cover crops prior to planting. Elimination of 

competing vegetation helps to assure crop stand establishment, rapid early season crop growth and 

efficient fertilizer use. Winter vegetation common to Northeast Louisiana ranges from easy, to control 

weeds such as annual bluegrass and common chickweed, to difficult, to control species such as curly 

dock and ryegrass. Cover crops may include wheat or legumes (vetch and winter peas). Consequently, 

proper weed identification and herbicide selection are keys to a successful preplant burndown weed 

control program. 

More than 20 “winter weeds” are commonly found in fields throughout Louisiana. Only a few key species, 

however, dictate selection of the most effective herbicide program. Glyphosate 1 and paraquat continue to 

be the “backbone” of most burndown herbicide programs. Each product exhibits specific strengths and 

weaknesses. Tank mixtures with other materials broaden the spectrum of control and/or provide residual 

control until planting. Glyphosate provides slow systemic control of weeds, while paraquat results in fast 

contact control requiring thorough weed coverage for maximum effectiveness. Addition of ammonium 

sulfate to glyphosate spray solution has not been beneficial in most cases and should not be used except 

where “hard water” (water containing mineral salts, including iron, calcium, and magnesium) is used as 

the carrier. 

Glyphosate provides good to excellent control of annual bluegrass, Carolina foxtail, little barley, buttercup 

species (spp.), chickweed spp., dandelion, marestail, shepherdspurse, bittercress and Virginia 

pepperweed (Table 1). Control of geranium spp., curly dock, henbit, cutleaf eveningprimrose, smartweed 

spp. and legume cover crops has been poor to fair. Tank mixing Goal 2XL/Delta Goal or Valor with 

glyphosate improves geranium spp., henbit, smartweed spp. and legume cover crop control over 

glyphosate alone. Tank mixing Harmony Extra with glyphosate improves geranium spp., curly dock, 

cutleaf eveningprimrose, henbit, smartweed spp. and legume cover crop control. Including Clarity or 2,4- 

D as a tank-mix partner can aid in control of Carolina geranium, curly dock, cutleaf eveningprimrose, 

smartweed spp. and legume cover crops. Clarity is more active on smartweed spp. than 2,4-D, whereas 

2,4-D is more active on cutleaf eveningprimrose and geranium spp. Currently, no tank-mix partner 

substantially improves ryegrass control more than glyphosate alone. Multiple applications of glyphosate 

are generally required to control ryegrass, unless applications are made prior to five leaves. 

Paraquat provides good to excellent control of annual bluegrass, little barley, buttercup spp., geranium 

spp., chickweed spp., henbit and shepherdspurse. Control of ryegrass, curly dock, cutleaf 

eveningprimrose, marestail, smartweed spp., swinecress, legume cover crops and Virginia pepperweed 

has been poor. Including Goal 2XL as a tank-mix partner aids in the control of cutleaf eveningprimrose, 

marestail, smartweed spp., legume cover crops and Virginia pepperweed. Control of curly dock, cutleaf 

eveningprimrose,3 marestail, smartweed spp., swinecress, legume cover crops and Virginia pepperweed 

is increased with the addition of Harmony Extra. Some materials when tank-mixed with paraquat 

increase ryegrass control, but not to an acceptable level. Consequently, paraquat is not recommended 

when ryegrass is the main target weed. 

Ignite 280 is a relatively new herbicide to Louisiana growers. With the introduction of Liberty Link 

technology (crops tolerant to glufosinate, the active ingredient in Ignite 280) growers will become more 

familiar with this herbicide. Ignite is effective on numerous winter weeds found in Louisiana (Table 1). 

Adding 2,4-D or clarity to Ignite 280 in a burndown program is sometimes needed but not always 

advantageous. Since a phenoxy herbicide is not always needed to control cutleaf evening primrose and 

geranium, it may have an advantage in “phenoxy-sensitive” areas. Ammonium sulfate, however, must be 

1 

Glyphosate and paraquat are sold under various trade names and formulations. Observations in this document are 

based primarily on field experiments with glyphosate formulations Roundup Ultra and Roundup D-Pak, Touchdown 

5 (sulfosate) and Gramoxone Extra (paraquat). New Touchdown IQ (trimesium glyphosate) and Gramoxone Inteon 

(paraquat) formulations are available. 

10

11 


used according to label directions. This product also has an attractive replant interval for several crops 

(Table 2). Although this is an excellent burndown herbicide, cotton growers are limited on the amount of 

Ignite that can be applied in a single season. In many cases, cotton farmers are well-advised to save 

their Ignite for in-crop applications until such time as a new label is issued, allowing more product per 

acre per year. 

Timing of vegetation removal is another critical factor for successfully implementing reduced tillage 

programs. Conservation tillage practices provide an environment favorable to insect pest populations, 

primarily cutworms. Cutworm larvae feed on existing winter vegetation until it is removed or decomposed 

to a point no longer adequate as a food source. If present at planting, cutworm larvae may threaten 

stands of emerging crops. Research has shown that destroying winter vegetation at least three to four 

weeks prior to cotton planting is critical (Figure 1). Cutworms are able to feed on decaying vegetation; 

therefore, a herbicide application six to eight weeks prior to planting is preferable. Pyrethroid insecticides 

can be used in combination with a burndown herbicide or at-planting 2 when the potential for cutworm 

infestation is high. If any living vegetation remains on the seedbed at planting, insecticide should be used 

for cutworm management. 

Weeds may regrow from initial burndown application or new weeds may germinate when herbicides are 

applied six to eight weeks prior to planting. In these situations, use of residual herbicides such as Goal 

2XL/Delta Goal, Valor, Direx or atrazine (in corn/sorghum) can be beneficial. Sequential applications of 

glyphosate or paraquat are also effective and often eliminate the need for tank mixes. Glyphosate 

applied six weeks prior to planting followed by paraquat at planting is an excellent weed control program. 

GLYPHOSATE-RESISTANT MARESTAIL 

Although glyphosate-resistant marestail (horseweed), Conyza canadensis, has been confirmed in states 

surrounding Louisiana (Arkansas, Tennessee, Mississippi and others) it has not been officially verified in 

Louisiana. As of the time of this printing, most identified populations exhibit an 8- to 13-fold level of 

resistance, meaning that these resistant biotypes can survive a glyphosate application 13 times the rate 

that controls a non-glyphosate resistant marestail. In Louisiana, few acres receive a burndown herbicide 

composed strictly of glyphosate, since we have weeds that are difficult to control with glyphosate alone. 

These, of course, include Carolina geranium, curly dock and cutleaf evening primrose to name a few. 

Since most of our treated acreage will include a tank-mix herbicide such as 2,4-D or dicamba 

(Banvel/Clarity), most of the marestail present will be controlled by the phenoxy herbicide if there is 

glyphosate-resistance present; thus, these plants will not go to seed. Through vigilance and tank mixes 

with herbicides that will control marestail, Louisiana producers should not have great difficulty dealing with 

glyphosate-resistant marestail. Ignite 280 is another choice for controlling marestail and is a means for 

inserting another mode of action into one’s burndown program. Ignite 280 is effective on marestail and 

numerous other weeds found in Louisiana fields but control can be temperature dependent. Ignite 280 

works best if daytime temperatures are 60° F or above. Consult Table 1 for specific levels of control of 

selected weeds. 

FALL BURNDOWN 

Recently, some interest has arisen regarding fall herbicide applications to control vegetation throughout 

the winter, resulting in a weed-free seedbed at planting time. Two of the more popular choices for this 

type application are Goal 2XL/DeltaGoal or Valor. Either of these two products will control winter 

vegetation if applied shortly after emergence of the vegetation. Valor may be applied at 2 to 3 oz/A in 

combination with glyphosate and/or 2,4-D. Applications in Louisiana should not be made prior to 

November 15. Goal/Delta Goal may be applied at 1 to 2 pt/A. Goal may be tank-mixed with glyphosate 

to control emerged weeds including suppression of horseweed and Italian ryegrass. In most cases, the 

herbicide must be tilled, moved, or in some way disturbed prior to planting. Be certain to check the 

product label for specific recommendations. 

2 Infurrow application is the least effective method for controlling cutworms.

12 


Although these treatments will result in a relatively weed-free seedbed at planting time, the soil will be 

exposed to weathering if no vegetation is present. Therefore, these treatments should not be used on 

highly erodible, or sloping soils. Be certain to consult with your local FSA or NRCS office to determine if 

you can use these treatments without conflicting with your conservation plan. 

Volunteer Roundup Ready Crops 

Volunteer Roundup Ready crops, especially soybeans, can sometimes be present in the spring following 

the previous crop. Oftentimes, they germinate after the primary burndown application has been made. In 

this case we need to opt for a preplant burndown with a short or no replant interval. Table 3 lists several 

herbicides that can be used in this situation. Remember, volunteer Roundup Ready plants are more 

easily controlled prior to crop emergence than in-crop, especially in a glyphosate-based cropping system. 

SUMMARY 

Burndown herbicide decisions should be based on activity of glyphosate or paraquat on the most difficult 

to control weed species present. Appropriate tank mixtures should be considered based on their ability to 

enhance control with glyphosate or paraquat and/or to provide residual activity. A list of guidelines for 

choosing appropriate burndown programs are as follows: 

Guidelines for Choosing a Burndown Program 

1. Vegetation should be destroyed at least three to four weeks prior to planting, preferably six to eight 

weeks. 

2. Choice of herbicide program depends on the most difficult to control weed species present. 

3. Use glyphosate if annual ryegrass, marestail, swinecress, speedwell, groundsel, Virginia 

pepperweed, or wheat is the target vegetation. Use paraquat if geranium spp. or henbit is the 

primary weed present. 

4. Carolina geranium, curly dock, cutleaf eveningprimrose, clover spp., henbit, smartweed, 

swinecress and legume cover crop control can be increased when glyphosate is tank-mixed with 

other herbicides. 

5. Carolina foxtail, curly dock, cutleaf eveningprimrose, clover spp., dandelion, groundsel, henbit, 

marestail, smartweed, speedwell, swinecress, Virginia pepperweed and legume cover crop 

control can be increased when paraquat is tank-mixed with other herbicides. 

6. Consider using an insecticide program that controls cutworms if any live vegetation is present at 

planting. 

SELECTED REFERENCES 

Listed below are additional Louisiana State University Ag Center publications relating to conservation 

tillage systems: 

7. Conservation Tillage Systems for Energy Reduction: Preplant Weed Control in Cotton. Pub. 8909. 

8. Conservation Tillage Systems for Energy Reduction: Soil Fertility. Pub. 8910. 

9. Conservation Tillage Systems for Energy Reduction: Tillage Equipment. Pub. 8908. 

10. Conservation Tillage Systems for Energy Reduction: Cotton Stand Establishment. Pub. 8906. 

11. Conservation Tillage Systems for Energy Reduction: Insect Pest Management. Pub. 8907. 

12. www.lsuagcenter.edu 

Compiled by: Bill Williams 1 , Donnie Miller 1 , Steve Kelly 2 , Roy Vidrine 3 , Roger Leonard 4 , Jim Griffin 5 , Dearl Sanders 6 , 

Eric Webster 7 , Eddie Millhollon 8 , Ron Strahan 9 , Dan Reynolds 11 , Steve Crawford 11 and David Jordan 11 . 1 Associate 

Professor, Northeast Research Station, St. Joseph, LA; 2 Manager, Scotts Company, Apopka, FL; 3 Professor, Dean 

Lee Research Station, Alexandria, LA; 4 Professor, Macon Ridge Research Station, Winnsboro, LA; 5 Professor, 

Department of Agronomy and Environmental Sciences, Baton Rouge, LA; 6 Resident Coordinator, Idlewild Research 

Station, Clinton, LA; 7 Associate Professor, Department of Agronomy and Environmental Sciences, Baton Rouge, 

LA; 8 Associate Professor, Red River Research Station, Bossier City, LA; 9 Assistant Professor, Department of 

Agronomy and Environmental Sciences, Baton Rouge, LA; 11 Formerly with the Northeast Research Station.

13 


Table 1. Effectiveness of selected herbicides and/or herbicide combinations for controlling winter vegetation 3 . For 

more specific examples, rates, and updates, refer to the burndown section for each commodity in the Louisiana 

Suggested Chemical Weed Control Guide 4 . 

Paraquat 5 

Paraquat+Goal 2XL 

Paraquat+ 

Harmony Extra 

Paraquat+Clarity 

Paraquat+2,4-D 

Annual bluegrass (2-6”) 90 90 90 90 90 90 90 90 90 90 0 0 90 90 

Ryegrass 6 (6-10”) 40 50 50 40 40 70 70 70 70 70 0 0 70 60 

Carolina foxtail (2-6”) 80 90 80 80 80 90 90 90 80 90 0 0 90 90 

Little barley (2-6”) 90 90 90 90 90 90 90 90 90 90 0 0 90 90 

Buttercups 6 (2-6”) 90 90 90 90 90 90 90 90 90 90 - 90 90 90 

Geranium spp. 6 (2-6”) 90 90 90 90 90 50 60 80 70 80 50 60 60 90 

Chickweeds 6 (2-4”) 90 90 90 90 90 90 90 90 90 90 30 30 90 90 

Curly dock (6-8”) 40 50 70 70 70 60 70 90 80 90 80 70 80 80 

Cutleaf eveningprimrose (6-10”) 40 70 80 80 90 40 60 70 80 90 80 90 60 80 

Cutleaf eveningprimrose (2-5”) 40 70 80 80 90 50 80 70 80 90 80 90 80 90 

Clovers/medics 6 (2-6”) 60 80 90 80 80 50 70 80 90 90 90 90 - 90 

Dandelion (4-6”) 80 90 90 90 90 90 90 90 90 90 90 90 90 90 

Groundsel (2-4”) 70 90 90 90 90 90 90 90 90 90 - 90 90 90 

Henbit (6-8”) 80 90 90 80 80 70 90 90 80 80 60 50 90 90 

Marestail (4-10”) 50 70 70 60 60 90 90 90 90 90 - 60 90 90 

Smartweed spp. 7 (2-6”) 40 70 90 80 60 70 80 90 90 80 80 60 90 

Purslane speedwell (2-4”) 70 80 90 80 80 90 90 90 90 90 - 50 90 - 

Shepherd's purse (6-10”) 90 90 90 90 90 90 90 90 90 90 90 90 90 80 

Smallflower bittercress (6-10”) 90 90 90 90 90 90 90 90 90 90 70 70 90 - 

Swinecress (2-4”) 20 30 70 60 60 70 80 90 80 80 70 60 80 90 

Legume cover crops (6-8”) 

(vetch and winter peas) 

Glyphosate 

Glyphosate+ 

Goal 2XL/Delta Goal 

Glyphosate+ 

Harmony Extra 

60 80 90 90 90 50 70 80 90 90 90 90 70 90 

Virginia pepperweed (4-6”) 20 70 70 90 90 90 90 90 90 90 - 30 90 - 

Wheat (8-12”) 70 80 70 60 60 90 90 90 80 90 0 0 90 70 

3 

Ratings reflect control 28 days after treatment in mid-March . The average range for weed sizes are 

listed in parenthesis following each weed. Consult labels for optimum rates and weed sizes. 

4 

The "Louisiana Suggested Chemical Weed Control Guide" is updated annually and available online at 

www.lsuagcenter.com. 

5 

Paraquat at 0.47-0.63 lb ai/A (1.3-1.7 pt/A Gramoxone Max), glyphosate at 0.75-1.0 lb ai/A (1.5-2 pts/A 

Roundup Ultra, Touchdown IQ, 1.2-1.6 pts/A Touchdown 5, Roundup Ultra Max, 22oz/A Roundup 

WeatherMax), Goal 2XL/Delta Goal at 0.2-0.25 lb ai/A (0.8-1.0 pts/A), Harmony Extra at 0.014-0.023 lb 

ai/A (0.3-0.5 oz/A), Clarity at 0.25-0.5 lb ai/A (0.5-1 pt/A), Valor (1 - 2 oz/A) and 2,4-D at 0.75-1.0 lb ai/A 

(0.5-1 pt/A). 

6 

Ignite at 32 oz/A + ammonium sulfate. 

7 

This group of weeds has two or more species found in Louisiana 

Glyphosate +Clarity 

Glyphosate+2,4-D 

Clarity 

2,4-D 

Glyphosate + Valor 

Ignite 280 6

14 


Table 2. Plant back restrictions (days before planting) for commonly used burndown herbicides. 

Grain 

Cotton Corn 

Soybeans Rice 

sorghum 

Harmony Extra 14 45 45 45 45 

Harmony GT 7 Before emergence Before emergence 45 45 

Goal 8 * 8 * * 

Clarity 21* Before emergence 14/8oz* * 15 

Valor 30** 30** 0 30** 30** 

Aim 0 0 0 0 0 

2,4-D 30* Before emergence 15-30 30 15 

Ignite 280 0 0 0 120 70 

Direx 

*Consult label. 

15-45 Following year Following year Following year Following year 

**An accumulation of 1 inch of rainfall or irrigation is required. 

Table 3. Approximate levels of control of volunteer Roundup Ready crops with selected herbicides when 

applied according to label directions and within size limits specified on the label when appropriate. 

Cotton a Corn b Soybeans 

Postemergence c 

2,4-D 9 0 7 

Aim 10 0 4 

Clarity 7 0 10 

Classic 8 e 7 0 

Envoke 2 - 9 

Gramoxone Max/Inteon 9 7 9 

Ignite 280 10 10 10 

Select, Assure II, Poast Plus, 

0 10 0 

Fusion, etc. 

Staple 0 4 7 

Valor 

Preemergence 

4 0 4 

dg 

Canopy f 7 5 0 

Canopy XL f 8 5 0 

Caparol 0 3 4 

Direx 0 0 5 

Prowl 0 0 0 

Staple 0 4 - 

Valor 

a 

Four inches or less 

9 3 0 

b 

Size restrictions apply when using graminicides, consult label. 

c 

Applied after the volunteer RR crop has emerged. 

d 

Applied before the volunteer RR crop has emerged. 

e 

May require more than one application. 

f 

More consistent when applied in combination with a POST application of Classic. 

g 

Consult label for recrop intervals crop-use parameters where appropriate. 

Figure 1. Effect of burndown timing on cutworm population and cotton stand.

Rate of 

Formulated 

Material for 1000 

square feet 

HERBACEOUS PLANTS 

Acclaim 1EC 

0.34-1.0 oz/1000 ft2 

Barricade 65WG 

0.37-0.42 oz/1000 ft2 

Basagran T/O 4L 

1.5-2.0 pts/A 

0.5-0.75 oz/1000 ft2 

Betasan 4E 

15-25 pts/A 

5.6-7.3 oz/1000 ft2 

Dacthal 6FL 

4-10 qts/A 

3-7 oz/1000 ft2 

Derby 5G 

60-100 lb/A 

1.4-2.3 lb/1000 ft2 

Devrinol 50WP 

8-12 lb/A 

3-4.4 oz/1000 ft2 

Envoy 0.94EC 

17-34 oz/A 

Eptam 2.3G 

220-260 lb/A 

5-6 lb/1000 ft2 

Finale 1L 

3-6 qts/A 

2.2-4.4 oz/1000 ft2 

Fusilade 1EC 

32-48 oz/A 

1.5-2.0 oz/1000 ft2 

Gallery 75DF 

0.66-1.33 lb/A 

0.25-0.50 oz/1000 ft2 

Gramoxone Max 

1.8 pts/A 

0.66 oz/1000 ft2 

Image 1.5LC 

1-1.33 qt/A 

0.75-1.0 oz/1000 ft2 

Rate/Acre 

Active Ingredient 

fenoxaprop 

0.1-0.3 lb/A14-45 oz/A 

prodiamine 

1.0-1.15 lb/A 

0.65-0.75 lb/A 

bentazon 

0.75-1.0 lb/A 

bensulide 

7.5-12.5 lb/A 

DCPA 

6-15 lb/A 

simazine + metolachlor 

3-5 lb/A 

napropamide 

4-6 lb/A 

clethodim 

0.125-0.25 lb 

EPTC 

5-6 lb/A 

glufosinate 

0.75-1.5 lb/A 

fluazifop 

0.25-0.40 lb/A 

isoxaben 

0.5-1.0 lb/A 

paraquat 

0.6-0.9 lb/A 

imazaquin 

0.4-0.5 lb/A 

COMMERCIAL NURSERY CROPS 

Time To Apply 

15 


Weeds 

Controlled 

Postemerge Annual grasses 

and suppression of 

perennial grasses. 

Preemerge Annual grasses 

and some small 

seeded 

broadleaves such 

as pigweed. 

Postemerge Seedling 

broadleaves, 

yellow nutsedge 

and annual sedges 


and some 

broadleaves 


and some 

broadleaves 


and broadleaves 



Postemerge Annual and perennial 

grasses 



Postemerge Annual grasses, 

perennial grasses 


Postemerge Annual and 


Remarks 

Apply herbicide to actively growing grasses. 

More active on annual than perennial 

grasses. Can be used over the top of many 

flowers and ornamentals. Ornamental 

grasses may be injured or killed. Check label 

for recommended uses. 

Check label for tolerant ornamental species 

and susceptible weeds. Selective residual 

control in landscape situations. Incorporate 

into soil/media with rainfall/irrigation or light 

cultivation. Long residual. Use no more than 

2.3 lb/A/year. 

Postemerge directed spray in many 

established ornamentals. Will not control 

purple nutsedge. Control optimized by a 

second application within 10 days. Check 

label for recommended uses. Crop oil 

additions will increase activity. 


and susceptible weeds. Irrigate to move 

product into weed seed germination zone. Do 

not use peat moss prior to application. 


and susceptible weeds. Gives 

postemergence control of creeping speedwell. 


and susceptible species. Irrigate to activate. 

Wash granules off foliage of ornamentals. 


and list of susceptible weeds. Rainfall or 

irrigation needed to activate. 

Postemerge for actively growing grasses. 

Add 0.25% nonionic surfactant (1 pt/50 gal). 

Crop oil concentrate not recommended. 


and susceptible weeds. Immediate soil 

incorporation is important. 

Check label for recommended uses. 

Non-selective. 


Selective for grassy weeds. 

Preemerge Broadleaves Check label for tolerant ornamental species 

and susceptible weeds. Application rates 

based on weed to be controlled and 

ornamental species. Does not control 

grasses. 

Postemerge Most small annual 

grasses and 

broadleaves 

Preemerge; 

postemerge 

Some broadleaves, 

some sedges and 

some grasses 

Check label for recommended uses. Nonselective. 

Restricted use herbicide. Contact 

herbicide that has good activity on annual 

weeds. Do not use in landscapes. Avoid 

drift. 

Check label for tolerant ornamental species, 

susceptible weeds and recommended uses. 

Do not use on container-grown crops.

Rate of 

Formulated 


ft 2 and acre 


Rate lb ai/Acre 

HERBACEOUS PLANTS (continued) 

OH II 2 G 

2.3 lb/1000 ft2 

100 lb/A 

Pendulum 60 DG 

1.2-2.4 oz/1000 ft2 

3.3-6.6 lb/A 

Ronstar 2 G 

2.25-4.5 lb/1000 ft2 

100-200 lb/A 

Roundup 41% 

1.5-3.7 oz/1000 ft2 

1-5 qt/A 

Rout 2 G 

2.3 lb/1000 ft2 

50-100 lb/A 

Sharpshooter 18% 

5.5-11 oz/qt/water 

Snapshot 2.5 TG 

2.3-4.6 lb/1000 ft2 

100-200 lb/A 

Surflan 4 AS 

1.5-3.0 oz/1000 ft2 

2-4 qt/A 

Treflan 4 EC 

0.36-0.73 oz/1000 ft2 

1-2 pts/A 

Vantage 1 EC 

0.8-1.4 oz/1000 ft2 

36-60 oz/A 

XL 2 G 

4.5-7 lb/1000 ft2 

200-300 lb/A 

WOODY PLANTS 

Acclaim 1EC 

15-45 oz/A 

Basagran T/O 

0.55 – 0.73 oz/1000 

ft2 

1.5-2.0 pts/A 

oxyfluorfen + 

pendimethalin 

2 lb ai/A 

pendimethalin 

2.0-3.0 lb ai/A 

oxadiazon 

2-4 lb ai/A 

glyphosate 

1.0-5.0 lb ai/A 

oxyfluorfen + oryzalin 

1.0-2.0 lb ai/A 

Time To Apply 

16 




Preemerge Annual grasses, 

Spurge, 

chickweed, oxalis, 

groundsel, 

bittercress 


and some 

broadleaves 



Postemerge Grasses and 

broadleaves 


Spurge, 

chickweed, oxalis, 

groundsel, 

bittercress 

potassium salt Postemerge Grasses and 

broadleaves 

trifluralin (2.0%) 

+ isoxaben (0.5%) 

2.5-5.0 lb ai/A 

oryzalin 

2.0-4.0 lb ai/A 

trifluralin 

0.5-1.0 lb ai/A 

sethoxydim 

0.3-0.5 lb ai/A 

benefin 

+ oryzalin 

4.0-6.0 lb ai/A 

fenoxaprop 

0.1-0.3 lb ai/A 

bentazon 

0.75-1.0 lb ai/A 




and some small 

seeded 

broadleaves 


and some 

broadleaves 




and some 

broadleaves 


grasses 

Postemerge Selective control 

of broadleaves, 

annual sedges and 


Remarks 


and susceptible weeds. Can be used for 

container or field grown ornamentals. 


and susceptible weeds. 


and susceptible weeds. Injury has been 

observed on ajuga, liriope, mondograss. 

Wash granules off foliage. 


Labeled for greenhouse use. 


and susceptible weeds. Do not apply when 

plants are breaking dormancy or making a 

flush of growth. Apply 2 wks prior to 

greenhouse enclosure. Excellent broadleaf 

and grass control. Do not wait longer than 3 

months before reapplying. 


Apply to young, succulent, actively 

growing weeds. Labeled for greenhouse use. 

Good activity on small annual weeds. 


and susceptible weeds. Several herbaceous 

species listed. Can be used for landscapes, 

field and container production. 


and list of susceptible weeds. 




Selective herbicide that only controls grasses. 

Poor on torpedograss and annual bluegrass. 



Check label for recommended uses. Visual 

injury of grassy weeds is evident 4-10 days 

after application. 

Check label for recommended uses. No 

grass control. A second application is 

recommended for sedge control. Use at least 

20 gpa and 40 psi.

Rate of 

Formulated 


ft 2 and acre 

WOODY PLANTS (continued) 

Barricade 65WG 

0.36– 0.42oz/1000 ft2 

1.0-1.15 lb/A 

Broadstar 0.25 G 

3.44 oz/1000 ft2 

150 lb/A 

Envoy 0.94EC 

0.39 – 0.78 oz/A 

17-34 oz/A 

Devrinol 50WP 

2.94 – 4.4 oz/1000 ft2 

8-12 lb/A 

Casoron 4G 

2.3 – 3.44 lb/1000 ft2 

100-150 lb/A 

Eptam 2.3G 

5.0 – 6.0 lb/1000 ft2 

220-260 lb/A 

Fusilade 1EC 

1.5 oz/gal 

(spot treatment) 

32-48 oz/A 

Finale 1L 

1.5-4 oz/gal 

(spot treatment) 

3-6 qt/A 

Gallery 75DF 

0.24–0.48 oz/1000 ft2 

0.66-1.33 lb/A 

Goal T/O 1.6E 

preemerge: 

0.46-1.84 oz/1000 ft2 

or 1.25-5 pts/A 

postemerge: 

0.46 – 0.92 oz/1000 

ft2 or 1.25-2.5 pts/A 

Gramoxone Max 

0.66 oz/1000 ft2 

1.8 pt/A 

Image 1.5LC 

0.75 – 1 oz/1000 ft2 

1-1.33 qt/A 

Kerb 50 WSP 

2.0-4.0 lb/A 

Rate/Acre 


prodiamine 

0.65-0.75 lb ai/A 

flumioxazin 

0.38 lb ia/A 

clethodim 

0.125-0.25 lb ai/A 

napropamide 

4-6 lb ai/A 

dichlobenil 

2.5-5.0 lb ai/A 

EPTC 

5-6 lb ai/A 

fluazifop 

0.25-0.40 lb ai/A 

glufosinate 

0.75-1.5 lb ai/A 

isoxaben 

0.5-1.0 lb ai/A 

oxyfluorfen 

preemerge: 

0.25-1.0 lb ai/A 

postemerge: 

0.25-0.50 lb ai/A 

paraquat 

0.6-0.9 lb ai/A 

imazaquin 

0.4-0.5 lb lb ai/A 

pronamide 

1.0-2.0 lb ai/A 

Time To Apply 

17 




Preemerge Grasses and 

broadleaves 

Preemergence Bittercress, spurge, 

liverwort, 


grasses, 

annual bluegrass. 

Not effective on 

torpedograss 



Preemerge and 

postemerge 

Annual grasses 

and some 

broadleaves. 

Suppression of 

Florida betony. 


broadleaves and 

seedling 

johnsongrass 





Remarks 

Check label for tolerant ornamental species. 

Can be used in perennial and wildflower 

plantings. Use higher rate of application for 

longer control. Do not exceed 2.3 lb/A 

annually. 

Provides 8-12 weeks of control. Several 

trees, shrubs and groundcovers are listed as 

tolerant. Container and field grown plants 

only. Do not apply in landscape plantings. 

Postemerge for actively growing grasses. 

Add 0.25% nonionic surfactant (1 pt/50 gal). 

Crop oil concentrate not recommended. 

Several tolerant ornamentals. 


and list of annual grasses and broadleaf 

weeds controlled. Rainfall or irrigation 

needed to activate. 


Incorporate immediately after application in 

top 2 inches. Do not apply till 4 weeks after 

transplanting. Several tolerant woody 

ornamentals. 


and susceptible weeds. Immediate soil 

incorporation is important. 

Check label for recommended uses. Use 

nonionic surfactant. Rainfast in one hour. Do 

not use crop oil concentrate. Selective 

herbicide that will only control grasses. 

Check label for recommended uses. Rate 

determined by weed species being controlled. 

Apply as directed spray to control in-row 

weeds in field-grown plants. Limited 

translocation in perennial weeds. Nonselective. 

Preemerge Broadleaves Check label for tolerant ornamental species 

and susceptible weeds. Application rates 

based on weed and ornamental species. Will 

not control grasses. Safe on most container 

trees and shrubs. 

Preemerge and 

postemerge 



including 

bittercress. 



Preemerge and 

postemerge 

Preemerge and 

early postemerge 

Sedges and some 

broadleaves 

Grasses and some 

broadleaves 

For use on conifers and several field grown 

trees. 


RESTRICTED USE. 


and susceptible weeds. Controls green 

kyllinga, yellow and purple nutsedge. 

Limited number of ornamentals on label. 


and susceptible weeds. RESTRICTED USE

Rate of 

Formulated 


ft 2 and acre 

Woody Plants (continued) 

0H-2 3G 

2.3 lb/1000 ft2 

100 lb/A 

Pendulum 60DG 

1.2 – 2.4 oz/1000 ft2 

3.3-6.6 lb/A 

Pennant 5G 

0.9 – 1.6 lb/1000 ft2 

40-80 lb/A 

Predict 80DF 

1.1 oz/1000 ft2 

3 lb/A 

Princep 4L 

0.73-2.20 oz/1000 ft2 

2-3 qt/A 

Ronstar 2G 

2.30 – 4.60 lb/1000 

ft2 

100-200 lb/A 

Roundup 41% 

0.73 -3.6 oz/1000 ft2 

1-5 qt/A 

Rout 2G 

1.14–2.28 lb/1000 ft2 

50-100 lb/A 

Snapshot 2.5TG 

2.3 – 4.6 oz/1000 ft2 

100-200 lb/A 

Sureguard 51 WG 

0.18–0.28 oz/1000 ft2 

8 – 12 oz/A 

Surflan 75 WP 

0.98–1.96 oz/1000 ft2 

2.67-5.33 lb/A 

Treflan 4EC 

0.37 – 0.74 oz/1000 

ft2 or 1.0-2.0 pts/A 

Treflan 5 

3.67–7.34 oz/1000 ft2 

10-20 lb/A 

Vantage 1EC 

0.82–1.65 oz/1000 ft2 

36-60 oz/A 

Rate/Acre 


oxyfluorfen 

+ pendimethalin 

(2% + 1%) 

2 lb + 1 lb ai/A 

pendimethalin 

2.0-3.0 lb ai/A 

metolachlor 

2-4 lb ai/A 

norflurazon 

2.4 lb ai/A 

simazine 

2.0-3.0 lb ai/A 

oxadiazon 

2.0-4.0 lb ai/A 

glyphosate 

1-5 lb ai/A 

oxyfluorfen 

1.0-2.0 lb 

trifluralin (2.0%) 

+ isoxaben (0.5%) 

2.5-5.0 lb 

flumioxazin 

0.25 – 0.38 lb ai/A 

oryzalin 

2.0-4.0 lb ai/A 

trifluralin 

0.5-1.0 lb ai/A 

sethoxydim 

0.3-0.5 lb ai/A 

Time To Apply 

18 




Preemerge Annual 

grasses and 

broadleaves 

including 

bittercress and 

spurges. 




certain 















Preemerge and 

postemerge 

Bittercress, 

spurges, and other 

broadleaf weeds 







Remarks 

Container and field grown ornamentals. Not 

labeled for flowerbeds. Apply when plants 

are not breaking dormancy or making a flush 

of growth. 


and susceptible weeds. Most container and 

field ornamentals are tolerant. 


and susceptible weeds. Rates vary for 

different soil types and control time desired. 


and susceptible weeds. Apply as broadcast 

or as a band treatment in fall and spring. 


and susceptible weeds. Apply in at least 25 

gal water/A in fall or spring. Do not apply to 

plantings less than 1 year old. Avoid 

application to root zone area. 

Check label for tolerant ornamentals and list 

of susceptible weeds. 



and list of susceptible weeds. Apply at 50 

lb/A for a maximum of 2 applications per year 

or at 100 lb/A once a year. 


and list of susceptible weeds. Application 

rate determined by weed species desiring to 

control. 

Container and field production of several 

woody ornamentals. Same active ingredient 

that is found in Broadstar. Similar weed 

spectrum as oxyfluorfen. 


and list of susceptible weeds. Rain or 

irrigation needed to activate. Low rate: 3-4 

mos. control. High rate: 6-8 mos. control. 

Most ornamentals are tolerant. Check label 

for tolerant ornamental species and list of 

susceptible weeds. Incorporate after 

application. 

Check label for recommended uses. Same 

active ingredient as Poast. Herbicide only 

controls grasses. Most non-grass 

ornamentals are tolerant. Does not control 

torpedograss.

Effectiveness of Ornamental Herbicides 

Herbicide 

annual bluegrass 

bermudagrass 

Carolina geranium 

carpetweed 

chickweed 

crabgrass 

dodder 

greenbriar 

hairy bittercress 

19 

henbit 


Acclaim 7 6 0 0 0 7 - 0 0 0 7 0 0 - 0 0 0 0 0 0 0 

Barricade 9 0 - 9 7 9 - - - 7 0 4 - - 7 0 7 0 0 - - 

Basagran 0 0 - - 7 - - - - - 0 - 6 - 6 0 7 4 7 - 7 

Betasan 9 0 - 9 - 9 - - - 7 0 4 - - - 0 7 0 0 - - 

Casoron 9 0 9 9 9 7 7 - 9 7 0 9 9 - 7 - 7 - 6 9 7 

Derby 9 0 - 9 9 7 - - 9 7 0 7 9 - - 0 - 0 7 6 4 

Devrinol 9 0 - 7 7 7 4 - 9 9 -0 5 - - 6 0 - 0 0 6 - 

Envoy 9 0 0 0 0 9 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 

Eptam 9 0 - 9 - 7 - - - 7 - 6 - - - 0 - - 0 - - 

Finale 9 7 - - - 9 - - - 8 6 7 - - - - - - - 9 - 

Fusilade 8 9 0 0 0 7 - 0 0 0 9 - 0 - - 0 - 0 0 0 - 

Gallery 6 0 7 9 9 6 - - 9 9 0 5 9 - 7 0 7 0 0 6 7 

Goal - - 9 9 - - - - 9 - - 9 9 - 9 4 9 4 0 9 9 

Gramoxone 

Max 

johnsongrass* 

9 6 9 9 9 7 - 5 9 9 6 7 7 6 7 6 9 6 6 7 7 

Image 6 0 7 - 7 - - 0 7 7 0 - - - - 7 - - 7 7 - 

Pendulum 9 0 - 9 - 9 - - - 7 0 5 7 - - 0 - 0 0 - 7 

Pennant 9 0 - 9 6 8 - - 4 - 0 5 - - 6 0 - 0 6 - 4 

Predict 9 0 7 9 7 8 - - - - 0 - - - 7 - 7 0 0 - - 

Princep 9 0 - 9 9 6 - - 9 9 0 9 9 - 6 0 - 0 0 7 6 

Ronstar 7 0 - 9 3 8 - - - - 0 4 9 - 6 0 - 0 0 - 7 

Roundup 9 9 7 9 9 9 - 6 9 6 9 6 7 8 7 7 9 9 7 6 7 

Rout 9 0 - 9 - 9 - - - - 0 4 7 - 7 0 7 0 0 6 9 

Scott’s OH2 9 0 - 9 - 9 - - 7 - 0 5 7 - 7 0 7 0 0 7 7 

Snapshot 

80 DF 

Snapshot 

2.5 TG 

9 0 - 9 9 9 - - 9 7 0 6 9 - 7 0 7 0 0 7 7 

9 0 - 9 9 9 - - 9 7 0 6 9 - 7 0 7 0 0 7 7 

Surflan 9 0 - 9 - 9 4 - 6 7 0 6 9 - 7 0 - 0 0 4 7 

Treflan 9 0 - 9 - 9 - - - - 0 6 - - - 0 - 0 0 - - 

Vantage 9 9 0 0 0 9 - 0 0 0 9 0 0 - 0 0 0 0 0 0 - 

XL 9 - 9 - 9 - - - 7 0 6 9 - 7 0 - 0 0 4 7 

*Rhizome johnsongrass. Some herbicides can provide seedling johnsongrass control. Consult label. 

morningglory 

pepperweed 

poison ivy 

prostrate spurge 

purple nutsedge 

shepherdspurse 

trumpetcreeper 


white clover 

woodsorrel

CORN 

Effectiveness of postemergence burndown herbicides 4 weeks after application. 

Herbicide 

annual bluegrass 

annual ryegrass 

carolina foxtail 

little barley 

carolina geranium 

chickweed 

20 

curly dock 


2,4-D 0 0 0 0 5 3 6 9 5 5 6 8 6 5 5 

glyphosate 9 6 8 9 6 9 5 5 6 8 9 9 8 7 6 

glyphosate 

+ Clarity 

glyphosate 

+ Goal 

glyphosate 

+ Harmony Extra 

glyphosate 

+ 2,4-D 

glyphosate 

+ Valor 

Gramoxone Max/ 

Gramoxone Inteon 



+ Goal 



+ Harmony Extra 



+ 2,4-D 

cutleaf 

eveningprimrose 

9 6 8 9 8 9 8 8 8 8 9 9 9 8 7 

9 6 8 9 7 9 6 6 8 8 9 9 9 7 7 

9 6 8 9 7 9 8 6 8 8 9 9 9 8 9 

9 6 8 9 8 9 7 9 7 8 9 9 9 7 7 

9 6 8 9 5 9 5 8* 9 8 9 9 8 8 8 

8 4 7 8 8 9 4 5 5 5 6 8 8 2 4 

9 5 8 9 9 9 5 6 8 6 7 9 9 3 5 

8 5 7 9 9 9 5 7 8 6 8 9 9 6 9 

8 4 7 8 8 9 6 9 7 5 7 8 9 5 5 

Touchdown brands 9 6 8 9 6 9 5 5 6 8 9 9 8 7 6 

Note: Consult the label (s) prior to use and determine: (1) proper burndown application time and herbicide rates; (2) if surfactant or 

crop oil concentrate is required in the burndown treatment and (3) the required time period between burndown application and crop 

planting. 

*Small primrose only (4 to 5 inch rosette or less) 

henbit 

horseweed 

speedwells 

shepherdspurse 

bittercress 

swinecress 

smartweed

21 


Effectiveness of corn preemergence herbicides 4 weeks after application and rainfall for activation if needed. 

seedling 

johnsongrass 

annual grasses 

barnyardgrass 

broadleaf 

signalgrass 

yellow 

nutsedge 

purple 

nutsedge 

Atrazine 5 7 9 7 5 0 8 8 8 9 8 9 5 6 7 1 

Bicep II Magnum, 

Bicep Lite II Magnum 

Cinch ATZ 

8 9 9 8 9 1 8 8 8 8 8 9 9 9 9 1 

Eradicane 9 9 9 9 8 8 5 5 5 5 4 5 2 9 9 1 

Dual Magnum 

Dual II Magnum 

Cinch 

7 9 8 8 7 1 2 2 2 2 2 2 1 9 9 1 

Lasso 7 9 8 7 8 1 2 2 2 2 2 2 0 9 9 1 

Lasso + Atrazine 8 9 9 8 8 1 8 8 8 8 8 9 9 9 9 1 

Guardsman 

Guardsman Max 

8 9 9 8 8 1 8 8 8 8 8 9 9 9 9 1 

Harness 7 9 9 7 5 1 2 2 2 2 2 2 1 9 9 1 

Harness Xtra 7 9 9 9 6 1 8 7 8 8 8 9 9 9 9 1 

Outlook 7 9 8 8 7 1 2 2 2 2 2 2 1 9 9 1 

Prowl 7 9 8 7 0 1 2 2 2 2 2 2 0 9 9 7 

Prowl + Atrazine 8 9 9 8 5 1 8 8 8 8 8 9 9 8 8 7 

Surpass 7 9 9 8 7 1 2 2 2 2 2 2 2 9 9 1 

prickly sida 

hemp sesbania 

morningglory 

cocklebur 

sicklepod 

copperleaf 

smellmelon 

crabgrass 

foxtail 

itchgrass

22 


Effectiveness of corn postemergence herbicides 4 weeks after application and rainfall for activation if needed. 

seedling 

johnsongrass 


barnyardgrass 

broadleaf 

signalgrass 

yellow 

nutsedge 

purple 

nutsedge 

2,4-D 0 0 0 0 0 3 8 9 9 9 7 9 9 0 0 0 

Accent 9 8 8 8 5 4 2 2 6 5 5 1 1 4 8 8 

Atrazine 3 4 7 5 3 1 8 7 8 8 7 9 9 6 7 1 

Banvel/Clarity 0 0 0 0 0 3 9 9 9 9 7 8 8 0 0 0 

Beacon 9 7 6 5 4 3 1 1 5 6 6 5 6 9 9 6 

Buctril 0 0 0 0 0 0 3 9 8 9 4 8 8 0 0 0 

Callisto+Atrazine 3 4 7 5 3 1 8 8 9 - 8 9 9 6 7 1 

Celebrity Plus 9 8 8 8 5 4 9 9 9 9 9 7 8 4 8 8 

Distinct 3 3 3 3 3 3 9 9 9 9 7 8 8 0 0 0 

Exceed 9 7 8 0 4 3 8 7 8 9 7 3 4 8 8 0 

glyphosate* # 9 9 9 9 8 8 8 7 8 9 9 8 8 9 9 9 



8 9 9 9 4 3 6 7 6 8 6 9 9 9 9 5 

Harness Xtra 5 9 6 6 5 2 7 6 8 8 7 9 9 7 7 1 

Hornet 0 0 0 0 0 1 9 8 7 9 6 5 6 0 0 0 

Liberty* 8 8 8 8 7 9 9 9 9 9 9 9 9 8 8 8 

Linex 6 8 1 8 1 2 7 8 6 8 7 9 9 8 8 0 

Marksman 0 2 2 1 1 0 9 9 9 9 8 9 9 2 2 0 

Permit 1 2 0 2 9 9 1 8 5 9 5 1 1 0 0 0 

Python 0 - 0 0 4 1 8 9 9 8 7 4 5 0 0 1 

Steadfast 9 8 9 9 5 5 3 3 7 6 6 7 7 8 9 - 

Steadfast ATZ 9 9 9 9 5 5 6 6 8 8 6 9 9 9 9 - 

LAYBY 

Atrazine 4 4 4 4 2 0 0 7 8 8 6 9 9 4 4 0 

Karmex/Direx 6 6 6 6 2 1 7 6 7 8 7 9 9 9 6 5 

*These postemergence herbicides MUST be used with the correct herbicide resistant corn or severe crop injury or total corn 

destruction will result. Use Liberty with Liberty-Link corn and Roundup (or other labeled glyphosate) with Roundup Ready corn. 

Consult the herbicide label and seed company representative to ensure that a specific herbicide may be used safely with a specific 

corn variety. 

# Formulations vary, consult label for proper rate. 

prickly sida 

hemp sesbania 

morningglory 

cocklebur 

sicklepod 

copperleaf 

smellmelon 

crabgrass 

foxtail 

itchgrass

Rate of Formulated 

Material for 1 Acre 

Broadcast 

PREEMERGENCE 

AAtrex 80W or 

Atrazine 80W all soils 

2.5 lb 

Aatrex 4L or 

Atrazine 4L - 2 qt 

Aatrex Nine-O 

2.2 lb 

Bicep II Magnum 

lt soil: 1.3 - 1.6 qt 

med soil: 1.6 - 2.1 qt 

hvy soil: 2.1 - 2.6 qt 


Dual Magnum 

Cinch 

lt soil: 1.0 - 1.33 pt 

med soil: 1.33 - 1.67 pt 

hvy soil: 1.33 - 2.0 pt 

Dual Magnum or 


+ AAtrex 80W or 

Atrazine 80W 

lt soil: 1 pt + 1.1 lb 

med soil: 1.3 pt + 1.1 lb 

hvy soil: 1.33 pt + 1.8 lb 

OR 

Dual Magnum or 


+ atrazine 4 L 

lt soil: 1.0 pt + 1 qt 

med soil: 1.3 pt + 1.2 qt 

hvy soil: 1.33 pt + 1.6 qt 

Eradicane or 

Eradicane Extra 

1.0 - 3.5 qt 

Guardsman 5 L 

lt soil: 2.5 - 3 pt 

med soil: 3 - 4 pt 

hvy soil:4 - 4.5 pt 

OR 

Guardsman Max 

lt soil: 2.5 - 3 pt 

med-hvy soil: 3 - 4 pt 

G-Max Lite 

soil OM < 3% 

coarse: 2 - 2.5 pt 

med–fine: 2.5 - 3 pt 

soil OM > 3% 

coarse: 2.5 - 3 pt 

med–fine: 3 - 3.5 pt 

Rate/Acre 


atrazine 

2.0 lb (1.6 lb on highly 

erodible soils) 

s – metolachlor + 

atrazine 

1.8 - 3.6 lb 

s – metolachlor 

1.0 - 1.9 lb 

s-metolachlor 

1.5 - 2.5 lb plus 

atrazine 

1.0 - l.6 lb 

EPTC 

3.5 - 6.0 lb/A 

+ protectant 

dimethenamid 

0.72 - 1.31 lb 

+ atrazine 

0.83 - 1.5 lb 

dimethenamid 

0.56 – 0.84 lb 

+ atrazine 

0.69 – 1.03 lb 

Time To Apply 

23 


Weeds Controlled 

At planting Most annual small 

seeded grasses 

and broadleaf weeds. 

Atrazine does not 

always control 

broadleaf signalgrass 

Remarks 

Same as above Same as above Same as above. 

Preplant or 

preemergence 

Preplant 

incorporated; 

preplant without 

incorporation or 

layby 

Preplant 

incorporate 

immediately after 

application 

Most annual 

grasses including 

signalgrass, seedling 

johnsongrass 

and pigweeds 

Most annual small 

seeded grasses and 


Atrazine will improve 

morningglory control 

Most annual grasses 

and some broadleaf 

weeds, including 

seedling johnson- 

grass and nutsedge. 

Suppresses rhizome 

johnsongrass when 

used at the high rate 







Best if applied to the soil surface 

after planting but before weeds 

emerge. Rainfall required for 

activation. Maximum amount of 

atrazine that can be applied in 1 year 

is 2.5 lb. 

Poor control of most large seeded 

broadleaf weeds. Suggested for use 

in fields where grasses including 

signalgrass and/or seedling 

johnsongrass is a problem. 

May tank-mix to increase weed 

control spectrum. Soil texture and 

OM content determine correct rate. 

Consult label. 

Plant within 2 weeks of application 

into the upper 3 inches of soil. Do 

not apply if corn is grown for seed 

purposes. Plant seed to a maximum 

of 2 inches deep. Apply low rate for 

seedling grass and higher rate for 

rhizome johnsongrass. Use 

Eradicane Extra if field has a history 

of Eradicane usage. 

Similar in activity to Lariat/Bullet or 

Bicep premixes. 

Similar in activity to Lariat/Bullet or 

Bicep premixes. May be applied 

early postemergence.



Broadcast 

PREEMERGENCE (continued) 

Harness 7.0 EC 

lt soil: 1.25 - 1.75 pt 

med/hvy soil: 

1.75-2.25 pt 

Harness Xtra 

OM < 3% 

lt soil: 1.6 - 2.0 qt 

med soil: 1.6 - 2.4 qt 

hvy soil: 2.2 - 2.6 qt 

Hornet 

lt soil: 3.2 - 4 oz 

med-hvy soil: 4 - 4.8 oz 

Lasso 4L 

lt soil: 2.0 qt 

med soil: 2.5 qt 

hvy soil: 3.0 qt 

(Lasso Microtech) 

same as above 

Lasso + AAtrex 80W or 

Atrazine 80W 

lt soil: 1.5 qt + 1.25 lb 

med: 1.75 qt + 1.5 lb 

hvy: 2.25 qt + 1.75 lb 

OR 

Lasso + Aatrex 4L or 

Atrazine 4L 

lt soil: 1.5 qt + 2.0 pt 

med soil: 1.75 qt +2.4 pt 

hvy soil: 2.25 qt + 3.0 pt 

OR 

Lariat/Bullet (Lasso + 

Atrazine premix) 




Lumax 

2.5 - 3 qt 

Rate/Acre 


acetochlor 

1.1 - 2.0 lb 

acetochlor 

1.2 - 2.50 lb + 

atrazine 

0.80 - 1.65 lb 

flumetsulam 

0.04 - 0.05 

+ clopyralid 

0.14 - 0.16 lb/A 

alachlor 

2.0 - 3.0 lb 

alachlor 

1.5 - 0.5 lb 

+ atrazine 

1.0 - 1.6 lb 

s-metolachlor 

1.68-2lb 

+ atrazine 

0.625-0.75 lb 

+ mesotrione 

0.168-0.2 lb 

Time To Apply 

Preplant 

incorporated OR 

preplant up to 45 

days prior to 

planting 

OR after planting 

and prior to corn or 

weed emergence 

24 




Some grasses 


Preplant Broadleaves and 

incorporated or grasses 


days prior to 

planting or 


planting and before 

corn emergence 

Preplant 

incorporated 0-30 

days before 

planting 

OR 

at or after planting 

prior to crop or 

weed emergence 

At planting Most annual 

grasses including 

signalgrass, 

seedling 

johnsongrass 

and pigweeds 



including fall 

panicum and 


Remarks 

May tank-mix. Rates differ for 

reduced and no-till systems. Consult 

label for additional information. Adjust 

rate per label if OM < 3%. 

May tank-mix. Consult label for 

additional information. Adjust rates 

per label if OM > 3%. 

Broadleaves Do not use if soil pH >7.8. Do not use 

if OM < 1.5%. Do not use if Counter 

or Thimet insecticides have been 

used. CROP ROTATION 

RESTRICTIONS. Soybeans-10.5 or 

18 months.; grain sorghum-12 

months.; cotton, sweet corn-18 

months. CONSULT LABEL FOR 

OTHER INFORMATION AND 

RESTRICTIONS BEFORE USE. 

Preplant Most annual small 



Atrazine will 

improve 

morningglory control 

Poor control of most large seeded 

broadleaf weeds. Suggested for use 

in fields where grasses including 

signalgrass and/or seedling 

johnsongrass are a problem. 

Apply if signalgrass and/or fall 

panicum have not been adequately 

controlled with atrazine or simazine 

and if johnsongrass seedlings and 

broadleaf weeds are a problem. 

Soil texture and OM content 

determine correct rate. Consult 

label. Improved annual grass and 

broadleaf weed control over 

metolachlor + atrazine alone.



Broadcast 


Prowl/Pendimax 3.3EC 

Prowl H2O 

lt soil: 1.2 - 1.8 pt 

med soil: 1.8 - 2.4 pt 

hvy soil: 2.4 - 3.6 pt 

Outlook 6L 

lt soil: 12 - 14 oz 

med-hvy soil: 14 - 18 oz 

Surpass EC 

OM < 3% 

lt soil: 1.5 - 2.25 pt 

med soil: 1.5 - 2.5 pt 

hvy soil: 1.5 - 2.75 pt 

Rate/Acre 


pendimethalin 

0.50 - 1.5 lb 

Dimethenamid 

0.56 - 0.66 lb 

0.66 - 0.84 lb 

acetochlor 

1.20 - 2.20 lb 

Time To Apply 

25 




At planting Most annual grasses, 

johnsongrass from 

seed, and some 


At planting Most annual grasses, 

pigweeds, and some 

sedges. 

Preplant 

incorporated or 


days prior to 

planting or 


planting and 

before corn 

emergence 

Some grasses 


Remarks 

Apply to the soil surface after 

planting but before weeds or corn 

emerge. Plant corn at least 1.5" 

deep. Rainfall needed within 7 days 

after application for activation. 

Economical treatment but weed 

control may not be as consistent as 

Lasso, Dual or Outlook. 

Similar in activity to Lasso and Dual. 

If soil OM is greater than 3%, higher 

rates may be used. Consult label. 

May tank-mix. Rates differ for 

reduced and no-till systems. Consult 

label for additional information. 

Adjust rates per label if OM > 3% 

Note: Dual is manufactured by Syngenta Crop Protection, has been extensively used in corn production, and has the common 

name metolachlor. When metolachlor is manufactured, it contains a 1:1 ratio of two metolachlor isomers; the –R and the –S 

isomer. The –S isomer has greater herbicidal activity than the –R isomer, which allows for a reduction in the amount of –S 

isomer herbicide needed to obtain similar weed control compared to the –R isomer herbicide. To differentiate between 

metolachlor herbicides containing the –R or –S isomer consult the label under the “active ingredients” section. The –R isomer 

is denoted by metolachlor while the –S isomer is denoted by acetamide –(s). Alternatively, according to the Syngenta Crop 

Protection labels, if the trade names Bicep or Dual include the word “Magnum” (Dual Magnum, Dual II Magnum, Bicep II Lite 

Magnum), the –S isomer is an active ingredient. If the trade name does not include “Magnum”, the metolachlor –R:-S isomer 

ratio is 1:1 (Dual II, Bicep II, Bicep Lite II). 

EARLY POSTEMERGENCE 

AAtrex 80 W 2.5 lb OR 

AAtrex 4L 2 qt 

Both treatments are for 

lt. to med. Soils. 

AAtrex 80 W 2.5 lb OR 

AAtrex 4L - 2 qt 

+ Prowl/Pendimax 3.3 

Prowl H2O 

lt soil: 1.2 - 1.8 pt 

med soil: 1.8 - 2.4 pt 

hvy soil: 2.4 - 3.6 pt 

Banvel 0.5 pt or 

Banvel SGF 1 pt 

or Clarity 1 pt 

Reduce Clarity rate on 

sand-based soils. 

atrazine 

2.0 lb 

atrazine 

2.0 lb 

+ pendimethalin 

0.5 - 1.5 lb 

dicamba 

0.25 lb 

0.5 lb 


1 1/2" tall or 

less. Apply up to 

planting 

Prior to weed 

emergence 

Spike to 5-leaf 

or 8" tall corn 

Most annual weeds 

but grasses must be 

very small to obtain 

good control 

Overhead spray if necessary to get 

coverage of weeds but directed spray 

is preferable. Do not graze or feed 

forage from treated areas to livestock 

for 21 days after treatment. Do not 

use on seed corn. Atrazine rates 

cannot exceed a total of 2.5 lb. ai per 

season. Add 1.0 pt of surfactant or 

1.0 qt COC per 25 gals of solution. 

Up to 4-leaf corn Apply to clean, weed-free seedbed 

after stand is established. Some 

injury may result from this application. 

Most broadleaf 

weeds 

Effective for controlling small 

broadleaf weeds like morningglory, 

smartweed, pigweed, etc. Mixing with 

atrazine adds residual control. Do not 

use crop oil. Use only on light to med. 

soils with < 2% OM.



Broadcast 

Rate/Acre 


EARLY POSTEMERGENCE (continued) 

Callisto 

3 oz 

+ Aatrex 

1 pt 

Celebrity Plus 

4.7 oz 

Distinct 

4 oz 

6 oz 

Steadfast 

0.75 oz/A 

+ atrazine 

2.0 lb 

Steadfast ATZ 

14 oz 

POSTEMERGENCE 

2,4-D Amine 

0.5 – 1.0 pt in 10-20 gal 

water 

Accent* 

0.66 oz 

Buctril 

1.0 - 1.5 pt 

Banvel 0.5 pt or 

Banvel SGF 1 pt or 

Clarity 0.5 pt 

Beacon* 

0.76 oz 

Exceed WDG 

1 oz 

mesotrione 

0.094 lb 

+ atrazine 

0.5 lb 

dicamba 

+diflufenzopyr 

+nicosulfuron 

dicamba 

+ diflufenzopyr 

nicosulfuron 

+ rimsulfuron 

nicosulfuron 

+ rimsulfuron 

+ atrazine 

0.75 lb 

2,4-D amine 

0.25 – 0.5 lb 

nicosulfuron 

0.56 oz 

bromoxynil 

0.25 - 0.50 lb 

dicamba 

0.25 lb 

primisulfuron 

0.51 oz 

prosulfuron 

0.285 oz 

+ primisulfuron-methyl 

0.285 oz 

Time To Apply 

Before weeds 

are 4' tall 

4 to 24" corn or 

up to 6 leaves 

10-24 inches 

4-10 inches 

Corn up to 20 

inches or that has 

6 leaves with 

collars or less. 

Corn up to 20 

inches or that has 

6 leaves with 

collars or less. 

Before corn is 15” 

tall or after grain 

is dented 

When corn is in 

the 2 to 6-leaf 

stage & weeds 

are small 

Before corn is 14" 

tall and weeds 

are in the 2 – 4 

leaf stage 

26 



Remarks 

Broadleaves Callisto will not control grasses. 

Broadleaves and 

grasses 

Use minimum 10 gpa by ground. 

Use 0.5% nonionic surfactant 

Broadleaves Do not use on corn larger than 24 

inches. Maximum use rate is 10 

oz/A/season. 

Annual grasses and 

some broadleaves. 

Better on annual 

grasses than Accent 

alone. Consult label 

for weed size at 

application. 


broadleaves. Better 

on annual grasses 

than Accent alone. 

Not all Steadfast tankmixes can be 

applied to corn taller than 12 inches. 

Consult labels of all tankmix 

herbicides and use most restrictive 

height limitation. Best results when 

applied to corn 12 inches tall or less. 

Use 1% COC or 0.25 % surfactant. 

Same remarks as Steadfast. 

Contains atrazine which provides 

residual broadleaf and grass control. 

Broadleaf weeds Do not treat at tasseling and silking 

stage. If necessary to spray after 

corn is 15" tall but before tasseling, 

do not spray in whorl. 

Johnsongrass, 

signalgrass, pigweeds 

and morningglories 

Do not use on corn treated with 

Counter insecticide (an OP 

insecticide). Injury may result. For 

use on field corn only. Add 0.25% 

surfactant or 1% COC. 

Many broadleaf weeds Applied overtop. May serve as a 

replacement for 2,4-D in phenoxy 

sensitive areas. 

8 - 24" tall corn Most broadleaf weeds Best performance when weeds are 

3" tall or less. Direct-spray when 

corn leaves prevent proper 

coverage, sensitive crops are 

nearby, or tank-mixing with 2,4-D. 

Do not apply if soybeans are nearby 

and corn is > 24" or soybeans are > 

10" or blooming. Tank-mixing with 

atrazine adds to residual control (up 

to 12" tall corn). Do not use crop oil. 

Use only on light to medium soils 

with < 2% OM. 

When corn is 4- 

20" tall and 

johnson-grass is 

4-12" tall 

(seedling) or 8- 

16" tall (rhizome) 

Time to size of 

weed on label 

when corn is 

4-48" tall 

Johnsongrass & 

pigweeds 

Broadleaves and some 

grass suppression 

Similar to nicosulfuron. Certain 

hybrids may be sensitive. Add 

0.25% surfactant or 1% COC. 

Growers are advised to use Accent 

and Beacon on MDMV and Corn 

Stunt Virus tolerant hybrids. 

Post direct if corn is 24-48" tall. Do 

not apply to non-IR corn if any 

organophosphate (OP) insecticide 

was used prior to or during planting. 

Add surfactant or COC. May tankmix. 

Consult label for additional 

information.



Broadcast 

POSTEMERGENCE (continued) 

Hornet 

lt - med soil: 3.2 - 4 oz 

hvy soil: 4 - 4.8 oz 

1.6 - 4 oz 

plus NIS or COC 

Marksman WD 

lt soils: 2 pt 

med-hvy soils: 3.5 pt 

Permit 75WG 

2/3 - 1 1/3 oz 

POST DIRECTED 

Linex 4L 

1.25 - 3.0 pt 

Gramoxone Max 

0.7 – 1.3 pt 


1 - 2 pt 

LAYBY 

AAtrex 80 W 

2.0 lb 

OR 

AAtrex 4L 

3.0 pt 

Karmex DF 

0.75 - 1.0 lb 

OR 

Direx 4L 

1.25 - 1.5 pt 

Rate/Acre 


flumetsulam 

+clopyralid 

dicamba 

0.28 - 0.48 

+ atrazine 

0.53 - 0.92 lb 

halosulfuron-methyl 

0.032 - 0.063 lb 

linuron 

1.0 - 2.0 lb 

+ 1/2% surfactant 

paraquat 

0.26 - 0.64 lb 

atrazine 

1.6 lb 

diuron 

0.6 - 0.8 lb 

Time To Apply 

Ground cracking 

to spike stage 

(before corn is 2" 

tall/first leaf is 

unfurled) 

Spike stage to 20” 

tall corn or V6 

stage, whichever 

occurs first 

Corn emergence 

to 5 leaf or 8" tall, 

whichever stage 

occurs first 

Postemergence; 

Spike through 

layby 

When corn is at 

least 15" tall and 

weeds are not 

more than 8" tall 

After corn is 10" 

tall (measured to 

top of whorl). 

After last 

cultivation when 

corn is 20-30" tall 

After last 

cultivation when 

corn is 20 to 30” 

tall 

27 


Weeds Controlled Remarks 

Broadleaves Do not use if soil pH >7.8. Do not 

use if OM



Broadcast 

HERBICIDE TOLERANT CORN 

Roundup OriginalMax 

/WeatherMax 

22 oz 

Touchdown, others (4L) 

32 oz 

Liberty 

28 - 34 oz 

HARVEST AIDS 

Aim 

1.9 oz 

Gramoxone Max 

0.8 - 1.3 pt 


1.2 - 2.0 pt 

Rate/Acre 


glyphosate 

0.75 - 1 lb 

glufosinate 

0.37 - 0.42 lb 

carfentrazone 

0.031 lb 

paraquat 

0.3 - 0.49 lb 

Time To Apply 

From corn 

emergence until 

8 leaves with 

collars (or 30”) 

From corn 

emergence 

through V7 or 24 

inches. Use drop 

nozzles if corn is 

larger 

After grain has 

begun to dry down 

After black layer 

has formed 

28 




and broadleaf weeds 

Many annual grasses 

and broadleaf weeds. 

Adhere to weed size 

restrictions on label 

or unsatisfactory 

control will result 

Better on vines than 

pigweed, sickelpod, 

etc 

Grasses and 

broadleaves 

Roundup Ready Corn Only. 

Consult product labels for glyphosate 

products cleared on Roundup Ready 

corn. Do not exceed more than 44 

oz/year Roundup WeatherMax, or 64 

oz/yr of other formulations. 

Use only on those varieties 

designated as Liberty Link 

varieties. Refer to label for 

approved tank-mixes. Do not apply 

in a nitrogen solution. Make no more 

than 2 applications per year. Do not 

apply more than 62 oz/year. Do not 

apply within 70 days of grain harvest, 

or 60 days of forage harvest. 

Must use 1% crop oil concentrate. 

Use a minimum volume of 10 gallons 

by ground and 5 gallons by air. Do 

not apply within 3 days of harvest. 

Use a minimum of 20 gallons by 

ground or 5 gallons by air. Apply at 

least 7 days prior to harvest. Add 

nonionic surfactant at 0.25% (1 

qt/100 gallons).

COTTON 

29 


The values listed are estimates of the degree of weed control that should be obtained with a specific herbicide(s) on selected 

weeds under average conditions. Many factors such as soil texture, moisture and the extent to which the seedbed is pulverized will 

affect the results obtained. This information may be helpful to you in developing the most effective control program for the weeds 

on your farm. 

EFFECTIVENESS OF COTTON PREEMERGENCE HERBICIDES 

Herbicide 

copperleaf 

smellmelon 

bermudagrass 

rhizome 

johnsongrass 


Command 6 6 3 9 9 8 0 4 8 4 6 6 1 

Cotoran, Meturon or 

Fluometuron 

seedling 

johnsongrass 

nutsedge 

9 9 0 7 8 7 0 5 8 9 8 6 8 

Dual (all formulations) 1 1 0 7 8 6 - 6 4 8 4 1 3 

Karmex DF or Direx 4L 7 7 0 7 7 6 0 4 7 9 6 3 7 

Treflan, Trifluralin, Tri-4 

Trific, Trilin or Prowl, Prowl 

H20 

1 1 2 9 9 8 0 2 2 8 4 1 1 

Zorial 7 8 3 7 8 6 4 7 8 8 6 4 5 

Combination Treatments 

(PPI + Preemergence 

Surface) Treflan, Tri-4, 

Trific, Trifluralin, Trilin or 

Prowl + Cotoran, Meturon 

or Fluometuron 

spotted spurge 

teaweed 

pigweed 

morningglory 

cocklebur 

hemp 

sesbania 

9 9 0 9 9 9 0 6 8 9 9 8 8 

Treflan, Trifluralin, Trilin or 

Prowl + Karmex or Direx 8 8 0 9 9 9 0 5 7 9 8 5 8 

Treflan, Trifluralin, Trilin 

Tri-4, Trific or Prowl + 

Zorial 

8 9 3 9 8 9 4 8 8 9 6 4 5 

Staple + Cotoran 9 9 0 9 8 7 3 9 9 9 8 6 8

EFFECTIVENESS OF COTTON POSTEMERGENCE HERBICIDES 

30 


The values listed are estimates of the degree of weed control that should be obtained with a specific herbicide(s) on selected 

weeds under average conditions. Many factors such as soil texture, moisture and the extent to which the seedbed is pulverized will 

affect the results obtained. This information may be helpful, too, in developing the most effective control program for the weeds on 

your farm. 

Herbicide 

copperleaf 

smellmelon 

bermudagrass 

seedling 

johnsongrass 

grasses 

Aim - 8 0 0 0 0 0 8 9 9 9 - 6 

Aim + MSMA 5 5 0 8 8 8 7 8 9 9 9 - 8 

Aim + glyphosate 9 9 7 9 9 7 8 9 9 9 9 - 9 

Assure II/Targa 0 0 8 9 9 0 0 0 0 0 0 0 0 

Buctril 9 9 0 0 0 0 8 6 9 9 9 8 8 

Cobra + MSMA + 

COC 

Cotoran, Meturon 

or Fluometuron + 

surfactant 

Caparol or Cotton- 

Pro + surfactant 

Caparol or Cotton- 

Pro + DSMA or 

MSMA + Surfactant 

Cotoran, Meturon + 

MSMA or DSMA + 

surfactant 

nutsedge 

teaweed 

9 9 0 9 7 6 8 9 9 8 8 7 6 

8 8 0 7 6 3 6 7 5 6 5 6 - 

8 8 0 8 7 5 7 8 8 7 6 6 - 

9 9 0 9 8 7 8 9 9 8 7 6 8 

9 9 0 8 8 6 7 9 8 8 6 7 8 

Envoke 8 9 0 6 5 8 3 9 8 7 8 1 8 

Fusilade DX 0 0 8 9 9 0 0 0 0 0 0 0 0 

Glyphosate 9 9 7 9 9 7 8 9 8 8 8 9 8 

Goal+MSMA+ 

surfactant 

9 9 0 9 8 7 7 8 9 8 7 8 8 

Ignite 280 10 10 6 9 9 4 9 9 10 9 9 9 9 

Karmex or Direx + 

surfactant 

Karmex or Direx + 

DSMA or MSMA + 

surfactant 

Linex + MSMA + 

surfactant 

7 7 0 8 6 0 7 8 7 7 6 3 8 

8 8 0 9 9 7 8 9 8 8 6 4 8 

9 9 0 9 8 6 8 9 9 8 7 6 8 

Poast Plus 0 0 8 9 9 0 0 0 0 0 0 0 0 

Select 0 0 8 9 9 0 0 0 0 0 0 0 0 

Sequence 9 9 7 9 9 7 8 9 8 8 8 9 8 

Staple 2 4 0 6 5 5 8 9 8 7 8 1 6 

Staple + 

Glyphosate 

9 9 7 9 9 7 9 9 9 9 9 9 8 

Suprend 8 9 0 8 7 8 7 9 8 7 8 6 8 

Valor 1 9 9 0 0 0 3 8 9 9 9 9 - 8 

*Control rating estimates are for weeds 2" or less in size. Poorer control will be obtained with larger weeds. For perennial weeds, 

top kill only should be expected. 

CONTROL RATING SCALE: 0 equal to no control and 10 equal to 100% control. 

1 Valor is labeled for use with either MSMA or Roundup. Ratings of grasses and nutsedge would be 

higher than what is show. 

pigweed 

morningglory 

cocklebur 

coffeebean 

(sesbania) 

spotted spurge 

sicklepod



Broadcast 

PREPLANT 

Aim 

up to 1.6 oz 

Direx 4L 

1.5 pt-lt soil 

2.0 pt-med soil 

or 

Karmex 80DF 

10 oz-lt soil 

14 oz-med soil 

Roundup Ultra/Original* 

1.0 - 2.0 qt 

Roundup Weather Max, 

OriginalMax 

22 oz 

Roundup Ultra/Original* 

0.5 - 1.0 qt 

Roundup WeatherMax, 

OriginalMax 

22 oz 

Rate/Acre 

Active 

Ingredient 

carfentrazone 

0.025 lb 

diuron 

0.53 - 0.80 lb/ 

glyphosate 

1.0 - 3.0 lb 

Time To Apply 

Prior to cotton 

emergence 

15 to 45 days 

prior to planting 

At least 1 week 

before planting 





31 


Morninglories and 

other broadleaves. 

May be used to 

remove failed cotton 

stands. 

Most small-seeded 

annual grasses and 


Johnsongrass from 

rhizomes and most 

all emerged 

vegetation 

Preplant knock- 

down of most 

emerged annual 

weeds 

NOTE: Other formulations of Roundup may be available. Follow label instructions. 

glyphosate 

1 - 3 qt 

+ Valor 

1 - 2 oz 

glyphosate 

1 - 3 lb/A 

+ 2,4-D (4L) 

1 - 2 pt/A 

glyphosate 

1 - 3 lb 

+ Delta Goal 

6.4 - 16 oz 

Gramoxone Max 

1.7 - 2.7 pt 


2.5 - 4 pt 

Harmony Extra 

0.5 oz 

MSMA 

2.0 lb 

+ surfactant 

glyphosate 

1 - 3 lb 

+ flumioxazin 

0.5 - 1 oz 

glyphosate 

1 - 3 lb 

+ 2,4 D 

0.5 - 1.0 lb 

glyphosate 

1 - 3 lb 

+ oxyfluorfen 

0.1 - 0.25 lb 

paraquat 

0.64 – 1.0 lb 

+ surfactant 

thifensulfuron 

+ tribenuron 

0.023 lb 

Various 

concentrations 

available. Check 

label for rate. 

At least 30 days 




7 to 30 days prior 

to planting 

Same as glyphosate 

plus some weeds 

that glyphosate may 

not control 

Remarks 

Use crop oil concentrate (COC) at 1% (1 

gallon/100 gallons of spray solution). Weed 

species controlled is rate dependent. 

Consult label for proper rate according to 

weed species and size. 

Cover seed at least 1/2" deep. Apply to soil 

surface behind press wheel. To avoid 

possible cotton injury, do not use diuron 

following a soil applied organophosphate 

insecticide or injury may occur. 

Apply after rhizomes have sprouted and 

johnsongrass is at least 18". Wait 7 days, 

disk under vegetation and plant. Follow 

label directions. 

Wait 7 days, disk under vegetation and 

plant. Follow label directions. 

Follow label restrictions on replant following 

crop failure. 30 day planting restriction for 

cotton. 

Same as glyphosate CONSULT LABEL FOR 2,4-D PRODUCTS 

plus, primrose, APPROVED FOR USE ON COTTON. 

geranium and others 

Same as glyphosate 

plus, henbit, 

geranium 

Pennsylvania 

smartweed and 

dock 

Near planting time All annual grassy 

and broadleaf 

weeds, not more 

than 6" tall 

Apply with 

glyphosate or 

paraquat 

Preplant to ground 

cracking stage 

Smartweed, 

knotweed, dock 

and cutleaf 


Annual seedling 

grasses and small 


If applied from 7 to 30 days prior to planting 

incorporate to a depth of 2 inches prior to 

planing. 

This treatment is most useful on heavy soil 

that should not be disturbed in the spring 

before planting. Apply 5 in gals of water by 

air or 20 gals by ground. 

Follow label restrictions pertaining to 

intervals between application and planting 

(45 days). 

Apply prior to planting or before cotton 

seedlings emerge. Poor control unless night 

temperatures are 70° F or above.



Broadcast 

Rate/Acre 

Active 

Ingredient 

PREEMERGENCE- incorporated 

Prowl 3.3 lb/gal 

1.2 - 1.8 pt-lt soil 

1.8 - 2.4 pt-med soil 

2.4 - 3.6 pt-hvy soil 

Treflan, Trifluralin, Trific, 

Trilin, Tri 4 - 

4 lb/gal 

1.0 - 1.5 pt-lt soil 

1.5 - 2.0 pt-med soil 

3.0 pt.-hvy soil 

pendimethalin 

0.50 - 1.5 lb 

trifluralin 

0.5 - 1.5 lb 

PREEMERGENCE - surface applied 

Command 3 ME 

1.3 - 3.3 pt. 

all soil types 

Cotoran 80WP 

or Meturon 80DF or 

Fluometuron 80DF 

1.0 lb-lt soil 

1.5 lb-med soil 

2.5 lb-hvy soil 

Cotoran or Meturon 4L 

0.8 qt-lt soil 

1.2 qt-med soil 

2.0 qt-hvy soil 

Dual Magnum & 


1.0 - 1.33 pt-med soil 

1.33 pt-hvy soil 

Prowl 3.3 

Pendimax 

1.2-2.4 pt-lt soil 

1.8-2.4 pt-med soil 

2.4-3.6 pt-hvy soil 

Prowl H2O 

1-2 pt coarse soil 

2 pt medium soil 

3 pt fine soil 

Staple LX 

1.3 – 1.7 fl. oz. 

+ Cotoran, Meturon, or 

Fluometuron at labeled 

rates 

Zorial Rapid 80 




clomazone 

0.5 - 1.25 lb 

fluometuron 

0.8 - 2.0 lb 

metolachlor 

1.5 - 2.0 lb 

pendimethalin 

0.5 - 1.5 lb 

pyrithiobac 

0.5 - 0.75 oz 

+ fluometuron as 

stated above 

norflurazon 

1.0 - 2.0 lb 

Time To Apply 



Preplant Most annual 

grasses, seedling 

johnsongrass and 

fair control of some 


Preplant or 


planting 

Preplant 


surface applied 

at planting 

32 


Most annual 

grasses, johnsongrass 

from seed 

and fair control of 

some broadleaf 

weeds 

Most annual 

grasses and good 

control of wild 

poinsettia, spurred 

anoda, velvetleaf 

and itchgrass 

At planting Most small-seeded 




grasses 

At planting Annual grasses 

and some broadleaf 

weeds 

At planting Better control of 


and certain broadleaf 

weeds 

At planting. No 

more than 30 days 





Fair control of 

nutsedge 

Remarks 

Incorporate up to 1/2" deeper than seed is 

planted. Incorporation may be accomplished 

by rainfall if sufficient rain is received within 

seven days. 

Incorporate up to 1/2" deeper than seed if 

preplant or almost to seed if postplant. 

Command requires the use of the 

insecticides disulfoton or phorate applied infurrow 

to "safen" cotton from Command. 

Read and follow label instructions 

concerning application conditions and buffer 

zones to reduce nontarget drift injury. Note: 

Under excessive rainfall conditions at 

planting, cotton injury may occur. 

Cover seed at least 1/2" deep. Apply to soil 

surface behind press wheel. 

Dual may be applied preplant incorporated 

or preemergence. Cotton should be planted 

1.5 inches deeper than incorporated zone. 

Rainfall required within 7 days for activation. 

Can be used in no-till or reduced till cotton 

where incorporation cannot be used. 

Best control is achieved when used with a 

sequential post emergence Staple 

treatment. Follow label directions. 

Fair control of nutsedge. Gives control of 

other grasses and broadleaf weeds similar 

to Karmex/Direx. Zorial can be applied 

preplant incorporated at the same rate as 

the surface application, or split 1/2 ppi and 

1/2 surface.



Broadcast 

POSTEMERGENCE – overtop 

Assure II/Targa quizalofop 

5 - 8 oz for annual grass; 0.06-0.15 lb 

10 oz for johnsongrass & + COC or NIS. 

bermudagrass 

DSMA 

1.5 - 3.0 lb 

or 

MSMA 

1.0 - 2.0 lb 

+ 1/2% NIS 

Rate/Acre Time To 

Active Ingredient Apply 

Before grasses 

exceed height for 

treatment 

Various After cotton is 3" 

concentrations tall until first bloom 

are now available. 

Read label for 

proper rate. Add 

1 pt surfactant per 

25 gal solution. 

33 



Annual and 


Annual seeding 

grasses and some 

small broadleaf 

weeds. Some 

populations of 

cocklebur are 

resistant to MSMA 

or DSMA 

Same as above 

When applied as a directed spray; use no 

more than 2 applications either alone or in 

combination with other materials. If 

temperatures are low when applied, poor 

control may result. 

Note: One or more formulations of DSMA and MSMA have state labels for overhead application on cotton. Read the labels and 

follow directions closely as to rate and time and number of applications allowed. 

Envoke 

0.1 - 0.15 oz 

Fusilade DX 2 lb/gal 

0.37 - 0.75 pt for annual 

grasses up to 4 inches 

tall, 0.37 - 0.75 pt for 

johnsongrass 1-2 feet 

tall, 0.75 pt for 

bermudagrass runners 

Fusion 

10 oz 

+ 1 - 2 pts COC 

or 1/4% NIS 

trifloxysulfuronsodium 

fluazifop 

0.125 - 0.50 

+ COC or 

0.25% nonionic 

surfactant 

fenoxaprop-ethyl 

+ fluazifop 

0.15 lb 

Poast Plus 

sethoxydim 

1.5 pt for annual grasses 0.19-0.47 lb 

up to 

+ 2 pt. COC 

4 inches tall 

1.5 pt for johnsongrass 

1 - 2 ft tall. 

2.25 pt for 


4-6" long 

Staple LX 

2.6 fl. Oz. 

+ 2 pt surfactant per 

100 gals 

Select 

6 - 8 oz. for annual 

grass; 8 - 10 oz. for 

johnsongrass 

8 - 16 oz. for 

bermudagrass 

pyrithiobac 

1.0 oz 

+ surfactant 

clethodim 

0.09-0.25 lb 

+ COC 1qt/A or 

1% v/v 

AFTER cotton 

has reached a 

minimum of 5 

true leaves 


exceed height 

for treatment 


sedges including 

sicklepod. Weak on 

sida 

Annual and perennial 

grasses 

Do not apply to cotton that is stressed by 

drought or excess moisture. Do not tankmix 

with any EC formulated product as 

increased injury may be observed. Consult 

label for any approved tank-mixes. Do not 

tank-mix with grass herbicides as grass 

control will be reduced. Not labeled for 

aerial application. 

Application to larger grasses or grasses 

growing under drought stress will result in 

reduced control. Activity may be reduced if 

tank-mixed with other herbicides. Always 

add 1% non-phytotoxic crop oil concentrate 

or 0.25% NIS. Use lowest range of rates 

for shattercane and seedling johnsongrass. 

Consult label for retreatment rates. 

Same as above Same as above Application to larger grasses or grasses 



tank-mixed with other herbicides. Always 

add 1% non-phytotoxic crop oil concentrate 

or 0.25% NIS. Use lowest range of rates 

for shattercane and seedling johnsongrass. 

Consult label for retreatment rates. 


exceed height 

recommended 

for treatment 

When weeds 

are small 



exceed height 

recommended 

for treatment 

Annual and 


Pigweed, 

cocklebur, 

morningglory, sida 

and other broadleaf 

weeds 

Annual and 



growing under drought will result in 


tank-mixed with other herbicides. Add 2 

pt/A nonphytotoxic crop oil concentrate. 

Consult labels for retreatment rates. 

Weak on sicklepod. Can be banded. 

Same as above. Addition of a spray grade 

nitrogen fertilizer or ammonium sulfate may 

further improve weed control. Refer to 

label.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

POSTEMERGENCE OVERTOP – herbicide tolerant cotton 

Roundup Ready Cotton 


OriginalMax 

22 oz 

Roundup Ultra Max 

26 oz oz 

4 lb/gallon glyphosates 

1 qt/A 

Touchdown IQ 

1 qt 

+ Dual Magnum 

0.5 - 1.33 pt 

Sequence 5.25 L 

Up to 2.5 pt, not to 

exceed 3.5 pt/A/season 

Staple LX + 

glyphosate 

Roundup Ready Flex Cotton 


OriginalMax 

22 oz 

Roundup Ultra Max 

26 oz oz 

Sequence 

Note: See section 

above for Roundup 

Ready Cotton 

Staple LX + 

glyphosate 

Liberty Link Cotton 

Ignite 280 

22 - 29 oz 

Ignite 280 

22 - 29 oz 

+ Dual Magnum 

0.5 - 1.33 pt 

Staple + 

Ignite 280 

glyphosate 

1.0 lb 

0.75 lb ae 

glyphosate 

1.0 lb 

0.75 lb ae 

+ metolachlor 

0.47 - 1.27 lb 

Glyphosate 0.7 - 

1.0 lb + 

metholochlor 0.94 

- 1.3 lb 

pyrithiobac + 

glyphosate 

glyphosate 

1.0 lb 

0.75 lb ae 

pyrithiobac + 

glyphosate. (Do 

not exceed a 2 oz 

pyrithiobac/year 

glufosinate 

0.42 - 0.52 lb 

glufosinate 

0.42 - 0.52 lb 

+ metolachlor 

0.47 - 1.27 lb 

pyrithiobac + 

glyphosate 

Apply overtop no 

later than the 

4-leaf stage of 

cotton 



4-leaf stage of 

cotton. 

3-inch tall cotton to 

4-leaf for overtop 

applications. Can 

be post-directed. 



4 leaf stage of 

cotton 

No restriction on 

cotton size. 

However, larger 

cotton may 

interfere with spray 

coverage resulting 

in reduced weed 

control. 



34 



weeds and grasses 




weeds and grasses. 





Apply overtop Most broadleaf 


From cotton Broadleaves and 

emergence to grasses. Consult 

early bloom. Time label for rates and 

applications to size restrictions 

weed size, not crop 

stage. 

Cotton emergence 

to early bloom. 

Time applications 

to weed size, not 

crop stage 

Apply overtop to 

improve pigweed 

control 


grasses. Consult 

label for rates and 

size restrictions 



Remarks 

USE ON ROUNDUP READY VARIETIES 

ONLY. If subsequent glyphosate treatments 

are applied they must be post-directed 

utilizing equipment that prevents spray from 

contacting the plant. Spray to plant contact 

after the 4-leaf stage may result in abnormal 

fruiting. Consult label for approved 

formulations. 


ONLY. See other cautions above. DO NOT 

mix with Staple. Can be applied in first or 

second overtop application to provide 

residual control. Do not use AMS or 

additional surfactant. Check label for 

approved products. 


ONLY. Will control emerged grasses and 

broadleaf weeds and provide residual 

control of grasses and pigweeds. 

See comments for glyphosate and 

pyrithiobac. Do not exceed a total of 2 oz 

pyrithiobac/year. 

USE ON ROUNDUP READY FLEX 

VARIETIES ONLY. Can be tank-mixed with 

insecticides and PGRs. However, the use of 

air induction nozzles may adversely affect 

insecticide efficacy. Total in-crop 

applications of OriginalMax or WeatherMax 

cannot exceed 4 qts/A from at-crack 

applications to 60% open bolls. 

Consult label for approved formulations. 

Do not add surfactants or products with 

surfactants for post applications. 

Equivalent amounts of Staple or an 

approved glyphosate formulation may be 

used. See comments for glyphosate and 

pyrithiobac. . 

APPLY TO LIBERTY-LINK COTTON 

VARIETIES ONLY. Weak on sedges, large 

goosegrass & signalgrass. Pigweeds may 

not be effectively controlled if larger than 4 

to 5 inches at application. Prowl PRE may 

aid in pigweed control in this system. Do not 

apply more than 80 oz/season. Do not apply 

within 70 day of harvest. Apply in a 

minimum of 15 gpa. 

See above comments. Apply in a minimum 

of 15 gpa. DO NOT mix with Staple. 

Do not exceed a total of 2 oz 

pyrithiobac/year.



Broadcast 

Rate/Acre 

Active 

Ingredient 

POSTEMERGENCE - directed spray 

Time To Apply 



35 


Remarks 

The following herbicides can be applied singly with a surfactant or in combination with the above rates of DSMA or MSMA as a 

directed spray. Generally, a wider range of weed control can be expected if the DSMA or MSMA is added to the mixture. Several 

mixtures of residual herbicides plus MSMA are premixed. Apply these according to label rates. Glyphosate and Ignite/Ignite 280 

can also be tank-mixed with many of the following products according to label directions. Use glyphosate and Ignite 280 with the 

appropriate herbicide resistant cotton variety. 

Aim 2 EC 

0.75 - 1.5 oz 

+ 1% crop oil 

concentrate 

Cobra 2 EC 

12.5 oz 

Caparol 80 WP 

0.50 -0 .80 lb 

Caparol 4L/Cotton-Pro 

0.5 - 0.7 qt 

Cotoran/Meturon or 

Fluometuron 80DF 

1.0 - 1.5 lb 

Cotoran/Meturon 4L 

0.8 - 1.2 qt 

Direx 4L 

0.4 - 0.8 pt or 

Karmex DF 

4.0 - 8.0 oz 

Goal 1.6E 

1.0 - 2.0 pt 

+ MSMA 

1 – 2 lb 

Linex 4L 

1.0 - 1.5 pt 

Suprend 

1 - 1.5 lb 

Reflex 2 EC 

1 – 1.5 pt/A 

+ 1/4 % NIS or 

½% COC 

LAYBY- single application 

Caparol 80 WP 




Caparol 4L 

or Cotton-Pro 




carfentrazone 

0.012 - 0.024 lb 

lactofen 

0.19 lb 

+ surf. 

Prometryne 

0.5 - 0.7 lb 

+ surfactant 

fluometuron 

0.8 - 1.2 lb 

+ surfactant 

diuron 

0.2-0.4 lb 

+ 1 pt 

surfactant/25 

gallons spray. 

oxyfluorfen 

0.25 - 0.50 lb 

+ surfactant 

+ MSMA 

linuron 

0.50 - 0.75 lb 

+ surf + MSMA 


+ prometryne 

fomesafen 

0.25 - .375 

lbs/A 

prometryne 

0.8-1.6 lb/A 

After cotton is 12" 

tall 


tall 

After cotton is 3” 

tall 


tall 


tall and actively 

growing 


tall 


tall. 

After cotton is at 

least 6” tall. 

After cotton is at 

least 6” tall. May be 

used as Layby or 

under hooded 

sprayers. 

Broadleaf weeds 

except prickly sida 

Avoid contact with cotton above the bark 

layer. Will not control grasses. Must be 

tank-mixed with MSMA or glyphosate 

(Roundup Ready cotton only) to control 

grasses. Do not apply more than 3.25 

oz/A/year as a layby or post-direct 

application. May improve morningglory and 

sesbania control with glyphosate. 

Broadleaf weeds Apply as a directed spray only. 


grassy and 



grassy and 



grasses and broadleaf 

weeds less 

than 3" tall and 



grassy and 



grassy and 


Select grasses and 

many broadleaves. 

Good on sicklepod. 

Controls 

broadleaves with 

some soil residual. 

Apply when cotton Most small-seeded 

is at least 15” tall to annual grasses and 

a clean field broadleaf weeds 

Directed spray only. If DSMA or MSMA is 

added, do not apply after first bloom. 

If Cotoran has not been applied 

preemergence, two postemergence 

applications can be used if needed. If it has 

been used preemergence, only one early 

postemergence application should be used 

to prevent applying an excessive annual 

rate. 

Directed spray only. If DSMA or MSMA is 

added, do not apply after first bloom. 

Apply as a directed spray. Use low pressure 

and large droplets. Avoid contact with 

cotton. 

Apply as a directed spray only. 

May be tank-mixed with diuron, MSMA, 

glyphosate or Cobra for improved control of 

existing grasses. 

Do not apply Reflex later than 70 days 

before harvest. Do not apply more than 1.5 

pints per acre of Reflex in any year. Avoid 

spray contact with cotton leaves. May be 

tankmixed with other products, especially 

grass herbicides to provide broad spectrum 

weed control. 

(Same remarks as for single application of 

diuron for layby.)



Broadcast 

Rate/Acre 

Active 

Ingredient 

LAYBY- single application (continued) 

Cotoran/Meturon or 

Fluometuron 80 DF 

1.25 lb for all soils 

Cotoran/Meturon 4L 

1.00 qt for all soils 

Karmex 80 DF 




Direx 4L 



Linex 4L 

1.0 lb or pt-lt soil 

2.0 lb or pt-med soil 

3.0 lb or pt-hvy soil 

Valor SX 

1- 2 oz 

+ 

MSMA 

or 

glyphosate 

LAYBY – split 

application 

fluometuron 

1.0 lb 

diuron 

0.4 - 1.2 lb 

linuron 

0.5-1.5 lb 

flumioxazin 

0.0315 - 0.063 lb 

+ 

2.0 lb 

or 

1.0 lb. 

SPOT TREATMENT Poast Plus at 1.0 gal 

+ 1.0 gal crop oil 

concentrate per 100 

gal of water 

ROPE WICK 

APPLICATIONS 

Time To Apply 



Apply when cotton Most annual grasses 

is at least 15” tall to with fair control of 

a clean field broadleaf weeds 

Apply when cotton Most small-seeded 

is at least 15” tall to annual grasses and 

a clean field broadleaf weeds. 

Weak on signalgrass 

and browntop millet. 

Apply when cotton 

is at least 15” tall 

to a clean field 

Apply post-directed 

when cotton is at 

least 16” tall and 

has at least 2“ of 

bark. 

36 





Pigweeds, prickly 

sida, copperleaf, 

morninglory, 

sicklepod, cocklebur 

Remarks 


diuron for layby.) 

Apply with 4 nozzles per row or one 

flooding nozzle adjusted to completely 

cover the row but to keep spray off the 

cotton plants. Actively growing weeds up 

to 3” tall can be controlled by adding 1 pt of 

surfactant per 25 gal of spray mixture. 


diuron for layby.) Use this treatment if fall 

seeded crops will be grown following 

cotton. 

Do not apply more than 2 oz/A/application 

or more than 4 oz/A/season. Use 0.25% 

non-ionic surfactant. Do Not use crop oil 

concentrate, organo-silicant surfactants, or 

methylated seed oils. Valor will control 

emerged weeds given sufficient spray 

coverage. Good residual control of 

broadleaves with suppression of grasses 

can be expected. 

Karmex or Direx may be applied as layby by splitting the single application rate into two equal portions. 

The second half should not be applied if the weed problem does not justify such. Either or both of the 

split portions may be applied with 1 pt of surfactant per 25 gal of water in the spray mixture. This is 

necessary if small weeds are present when layby is applied. A surfactant will probably be essential any 

time the second portion of layby is applied. Do not exceed the single application rate in the 2 split 

applications. 

Fusilade DX at 2 qt 

+ 1.0 gallon crop oil 

concentrate or 1.0 qt 

nonionic surfactant 

per 100 gallons of 

water 

Select at 4.0 pt + 1.0 

gallon crop oil per 

100 gallons of water 

Roundup 

WeatherMax, others 

1.0-2.0 gal per 100 

gal of spray 

Roundup Ultra, 

others 

1.0 gal per 

2.0 gal of water 

Apply to rapidly 

growing grass 1-2 

feet tall 


growing grass 1-2 

feet tall 

Johnsongrass Spray to wet. 

Johnsongrass Spray to wet. 

Same as above Same as above Same as above. 


growing weeds 

Apply when 

johnsongrass is at 

least 12" taller than 

crop 

Grasses or broad- 

leaf weeds 

Thoroughly wet the weed foliage and 

keep spray off of the crop plants. May 

be used as a salvage application after 

20% cracked bolls. 

Johnsongrass The rope wick should remain moist for 

best results. Repeated applications may 

be necessary.

STALE SEEDBED WEED CONTROL 

37 


To reduce spring tillage, especially in heavier soils, fall or winter bed formation may be advantageous. Two options for weed 

control on stale seedbeds are available. These applications should not be made to highly erodible soils. 

FALL 

APPLICATION 

SPRING 

APPLICATION 

Use Goal 2XL/Delta Goal at 1.25-2.50 pt./A to control many annual broadleaf weeds and grasses and 

suppression of horseweed and Italian ryegrass. Use Treflan, Trific, Trilin, Tri-4, Trifluralin or Prowl at 

2.5 pt/A soil-incorporated to control many winter annuals. Valor may be applied at 1 to 2 oz/A to 

control many broadleaf weeds if applied in early winter. 

Apply to emerged weeds on existing beds. Apply Roundup Ultra to control most annual weeds and 

grasses. Control of henbit, wild geranium, and cutleaf eveningprimrose has not been adequate. Apply 

Gramoxone Extra at 2-3 pt/A or Gramoxone Inteon at 2.5-4 pt/A to control most annual weeds and 

grasses. Harmony Extra applied with Roundup WeatherMax (others) or Gramoxone Max/Inteon 

improves control of smartweed, dock, and cutleaf eveningprimrose. The addition of Goal 2XL/Delta 

Goal at 1.25-2.50 pt/A, in combination with Roundup Ultra and Gramoxone Max/Inteon, may improve 

control of henbit, wild geranium, cutleaf eveningprimrose and smartweed plus provide short-term 

residual control. Beds treated with Goal must be disturbed prior to planting. 2,4-D may be applied to 

control many hard to kill broadleaf weeds such as cutleaf eveningprimrose, dock, wild geranium and 

garlic. Consult labels for rates and planting interval restrictions when considering a 2,4-D application. 

Valor may be applied at 1 to 2 oz/A to control many broadleaf weeds (30-day preplant interval). For 

more detailed information, please consult the Burndown section. 

Herbicide resistance. Several biotypes of johnsongrass resistant to the graminicide herbicide family have been 

identified in Louisiana. Generally, if it is resistant to Fusilade DX, Assure II, Poast Plus or Poast, it may be susceptible 

to Select. Several biotypes, however, have been confirmed in Franklin Parish that are resistant to all of these 

herbicides. Therefore, an aggressive resistance-management program should be implemented if you suspect 

resistance on your farm. 

Simply rotating graminicides within a single crop will not be sufficient to delay resistance for a substantial period. 

Rotating crops and changing modes of action is the best method for delaying resistance. Rotating to corn, for 

instance, allows one to use Accent to control johnsongrass. Rotating to a Roundup Ready crop allows the use of 

Roundup (or another glyphosate) as an additional tool for delaying resistance. 

With the recent concerns about glyphosate-resistant marestail in states adjoining Louisiana, we recommend that 

growers seriously address this issue. The addition of Clarity or 2,4-D to glyphosate will greatly enhance marestail 

control, while helping to control Carolina geranium and cutleaf eveningprimrose. Ignite280/Ignite has been shown to 

effectively control several troublesome winter weeds including glyphosate-resistant marestail. Marestail seed is 

spread primarily by wind and air currents. Even though it may not have been present on your farm in past years, 

seed can be blown in from other farms, especially from the north where glyphosate-resistance has been documented. 

Consequently, we expect our first cases of glyphosate-resistant marestail to appear in East Carroll, West Carroll or 

Morehouse parishes, because of their proximity to Arkansas and northern Mississippi where glyphosate-resistant 

populations are established. 

Perhaps a more troubling concern to cotton producers is the discovery of glyphosate-resistant pigweed in Georgia. 

Although pigweed control options for cotton are available, they are not economical additions to the glyphosate-based 

weed control systems we are using. Envoke and Staple are currently effective on Louisiana pigweeds, but cases of 

ALS-resistant pigweeds are in Louisiana, making Envoke and Staple non-effective on these populations. To maintain 

the sustainability of glyphosate-based weed control programs not only in cotton, but in corn and soybean, growers 

should seriously consider a pro-active resistance-management program on their farms. 

In cotton, the easiest way to delay resistance is by the use of a soil-residual herbicide. This affords growers the 

opportunity to control pigweeds before they emerge and allows for a more timely application of glyphosate with the 

possibility of keeping pigweeds from maturing and producing seed. Unlike glyphosate-resistant marestail, pigweed 

seed are not mobile over wide geographic areas. Any glyphosate-resistant pigweed found in Louisiana (or any other 

state) will likely be “home grown.” Therefore, a pro-active resistance management program is of utmost importance.

Crawfish Production and Rice Herbicides 

38 


Aim Commercial crawfish not specifically mentioned; however, herbicide is 

moderately toxic to fish. 

Arrosolo Commercial crawfish production not specifically mentioned; however, 

herbicide is considered toxic to fish. Drift and runoff may be hazardous to 

aquatic organisms in neighboring areas. 

Basagran Do not use Basagran on rice fields in which the commercial cultivation of 

crawfish is practiced. 

Blazer Do not harvest crawfish from treated rice areas for food. 

Bolero Crawfish production not specifically mentioned. Toxic to shrimp. 

Command Do not apply on rice fields in which concurrent crawfish farming is included 

in the cultural practices. 

Duet Do not apply to fields where commercial crawfish farming is practiced. 

Facet Do not use treated fields for aquaculture of edible fish or crawfish. 

Grandstand Do not commercially grow shellfish or crustaceans on treated acres during 

the year of treatment. 

Grasp Except for crawfish, do not fish or commercially grow fish, shellfish or 

crustaceans on treated acres during the year of treatment. 

Hi-Dep Commercial crawfish production is not specifically mentioned; however, 

the label states product is toxic to aquatic invertebrates. 

Londax Do not harvest crawfish prior to harvesting rice. 

Ordram 15G Crawfish not specifically mentioned. Product is toxic to fish, however. 

Permit Crawfish production not specifically mentioned in restrictions. 

Prowl Crawfish not specifically mentioned. Product may be hazardous to aquatic 

animals. 

Ricestar Ricestar must not be applied to fields where crawfish are commercially 

cultured. 

Roundup Ultra 

Max 

Crawfish production not mentioned in restrictions. Herbicide cannot be 

applied to areas where surface water is present. 

Stam Crawfish not specifically mentioned in restrictions. Commercial catfish 

production prohibited. 

Storm Do not use Storm on rice fields where commercial crawfish production is 

practiced. 

2,4-D (UAP) Commercial crawfish production not specifically mentioned. May be toxic 

to aquatic invertebrates. 

Whip Do not apply in areas where crawfish are commercially cultivated.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

PERMANENT PASTURES WITH WHITE OR LADINO CLOVER 

Postemergence 

2,4-D Amine 

1.5 - 2.0 pt 

in 10 - 20 gal water by 

ground 

or 2 - 5 gallons water 

by air 

2,4-D Amine 

1.0 - 2.0 qt 

in 10 - 20 gal by ground 

or 2 - 5 gal water for 

aerial application 

Gramoxone Max 

8 oz 

+ 1.0 qt of surf/100 gal 

of spray 

2,4-D amine 

0.75 - 1.0 lb 

2,4-D amine 

1.0 - 2.0 lb 

paraquat 

0.25 lb 

+ surfactant 

PERMANENT PASTURE WITHOUT LEGUME 

Postemergence 


small. Oct. and Nov. 

in the fall and/or Feb. 

and March in late 

winter to early spring. 


small in the summer 

and early fall if no 

2,4-D susceptible 

plants are nearby. 


small, usually from 

April to June: but can 

be applied all 

summer and into 

early fall. 

Late Feb. to early 

March to late March 

in North La. Do not 

cut hay or graze 

within 40 days after 

treatment. 

FORAGES 

39 



Dock, plantain, bull 

thistle, buttercup, other 

winter or spring growing 


Bitterweed, fleabane, 

ragweed, marsh elder, 

goatweed, pigweed 

and many other summer 

growing broadleaf 

weeds 

Cypressweed, 

dog fennel, common 

mullein, jimsonweed 

Little barley and annual 

broadleaf weeds such 

as buttercup, wild 

geranium etc 

Remarks 

Fall spraying of dock is most effective. 

A second application may be required 

for complete kill at these rates. Do not 

apply 2,4-D if temperature is below 65° 

F. Some injury can be expected to 

established white or ladino clover. Do 

not apply 2,4-D in fall prior to seedling 

clover. Spray these weeds in the 

spring if cotton or other phenoxysusceptible 

crops are not nearby. Use 

the higher rate for fall spraying of more 

mature weeds. 

Rates in excess of 1.0 lb Amine or 0.5 

lb LVE 2,4-D will kill or severely injure 

clover. Lower rates of 2,4-D will control 

these weeds in seedling stage but 

higher rates required for more mature 

weeds. 

Apply before bermuda breaks 

dormancy. If little barley is present, 

apply just before head emerges from 

boot. 

Herbicide treatments suggested for use on permanent pastures with clovers can also be used on permanent pastures without 

clovers. 

2,4-D LVE 

1.0 qt 

in 20 gal of water 

+ 1 pt surfactant/100 gal 

water 

2,4-D LVE 

1.0 lb/A 

+ 0.1% 

surfactant 

Spray in late fall (Oct. 

& Nov.) and during 

Feb. or early March. 

Wild garlic and wild 

onions 

All legumes will be killed. Two 

applications for 2 to 3 years will be 

necessary for control. 

DO NOT GRAZE DAIRY COWS ON TREATED AREAS WITHIN 7 DAYS AFTER THE APPLICATION OF 2,4-D. 

Ally 60 DF 

Farmsaver Metsulfuron 

methyl 

0.3 oz. 

+ 0.25% surf. 

Banvel 

0.5 - 1.0 pt 

in 10 - 20 gal water. 

Clarity 

0.5 - 1.0 pt 

in 10 - 20 gal water 

metsulfuron 

methyl 

0.14 oz 

+ surfactant 

dicamba 

0.25 - 0.5 lb 





Bahiagrass and 

some broadleaf weeds 

Most broadleaf weeds 

and small brush 

For use on common and hybrid 

bermudagrass. There is no grazing 

restriction. 

Do not use seed from treated grass for 

food or feed purposes. Do not graze 

meat animals in treated fields within 30 

days before slaughter. Do not graze 

dairy animals on treated areas within 7 

days if 0.5 lb/A or within 21 days if 1.0 

lb/A is applied. Dairy animals should 

not be fed dry hay from treated area 

within 5 days after treatment.



Broadcast 

Rate/Acre 

Active 

Ingredient 

PERMANENT PASTURE - WITHOUT LEGUME 

Postemergence (continued) 

Cimarron Max 

Part A =0.25 - 1.0 oz 

+ Part B =1.0 - 4.0 pt 

Crossbow 

1.0 qt 

Grazon P+D 

2.0 - 4.0 pt 

Overdrive 

4.0 – 8.0 oz 


+ 0.25% nonionic 

surfactant 

PastureGard 

2 pt 

in 10 - 20 gal by ground. 

+0.25 - 0.50 % nonionic 

surfactant 

Plateau 

4 - 6 oz 

Remedy / Remedy Ultra 

1.0 - 2.0 qt 

Spike 20 P 

20 lb 

Surmount 

2 - 3 pt 

in 10 - 20 gal by ground. 

+ 0.25 - 0.50% nonionic 

surfactant. 

metsulfuron 

methyl 

0.19 - 0.75 oz 

+ dicamba 

0.13 - 0.50 lb 

+ 2,4-D 

0.36 - 1.44 lb 

triclopyr 

0.25 lb 

+ 2,4-D 

0.50 lb 

picloram 

0.125 - 0.25 lb 

+ 2,4-D 

0.50 - 1.0 lb 

dicamba 

0.13 - 0.26 lb 

+ diflufenzopyr 

0.05 - 0.10 lb 

triclopyr 

0.38 lb 

+ fluroxpyr 

0.13 lb 

imazapic 

0.0625 - 0.093 

lb/A 

triclopyr 

1.0 - 1.5 lb 

tebuthiuron 

1.0 - 4.0 lb 

picloram 

0.23 - 0.30 lb 

+ fluroxpyr 

0.18 - 0.24 lb 

Time To Apply 


actively growing. 

40 



Most broadleaf weeds 

and bahiagrass. Higher 

rates on more difficult to 

control weeds. 

Spring and summer Most broadleaf weeds. 

Also effective on briars 

and multiflora rose. 


small and actively 

growing 

When plants are 




Most annual and 

perennial broadleaf 

weeds 

Pigweed, buttercup, 

horsenettle, broadleaf 

dock, other broadleaf 

weeds 


perennial broadleaf 

weeds. 

When bermudagrass Johnsongrass, annual 

is dormant or after full ryegrass, little barley, 

greenup. 

dallisgrass, vaseygrass 

and some broadleaves 

When brush is fully 

leafed out 

Any time grass is 

dormant 



Most woody brush. Can 

be mixed with 2,4-D to 

increase spectrum 

Remarks 

For use on bermudagrass. Do not use 

on bahiagrass or temporary grass 

pastures. Do not use in 2,4-D 

restricted areas. Add nonionic 

surfactant at 0.25 % v/v or crop oil 

concentrate at 1.0 % v/v. Consult label 

for tolerance to other grass crop 

species. 

Do not use where dairy cattle will 

graze. Remove livestock from treated 

area at least three days before 

slaughter. 

Good control of hard to kill weeds, 

especially dogfennel and horsenettle. 

Good control of Chinese tallow. 

Limited grazing restrictions. Do not 

apply around desirable trees and 

shrubs. 

Useful in many pasture situations. 

Recommended for use in 2,4-D 

restricted parishes and areas. 

Can be used in 2,4-D restricted or 

banned areas. Do not use on forages 

grazed or fed to lactating dairy animals. 

Do not harvest hay for 14 days after 

application. 

Safe on common bermudagrass and 

the following hybrids: Coastal, Alecia, 

Russel and Tifton. All hybrids have not 

been tested. DO NOT apply during 

greenup in the spring. Severe stunting 

and growth reduction will occur. Add 1 

to 2 pts/A 2,4-D for additional broadleaf 

control if needed. No grazing 

restriction, 7 day haying restriction. 

Good control of Chinese tallow and 

berry briars. Good fencerow treatment. 

14 day grazing restriction for lactating 

dairy cows. No grazing restrictions for 

other livestock at recommended rates. 

Can be used in 2,4-D restricted areas. 

Most woody plants Can cause temporary damage to 

grasses. Spot treat where possible. Do 

not use in vicinity of desirable trees. 

Good control of most 

hard to control woody 

species. 

Tordon 22K picloram Apply in spring or fall Waxmyrtle and eastern 

red cedar 

Velpar 

3.0 pt 

hexazinone 

0.75 lb 

When smutgrass is 


Smutgrass and certain 


Can be used in 2,4-D restricted or 

banned areas. Do not use on forages 

grazed or fed to lactating dairy animals. 

Do not harvest hay for 7 days after 

application. Livestock must be withheld 

for 3 days priors to slaughter. 

Apply as a spot treatment. Use 3 ml. of 

undiluted Tordon 22K per 3 ft. of plant 

height. Follow grazing restrictions. 

For use on bermudagrass and 

bahiagrass pastures. Do not use on 

other desirable vegetation. Observe 

grazing restriction.



Broadcast 

Rate/Acre 

Active 

Ingredient 

PERMANENT PASTURE - WITHOUT LEGUME 


Weedmaster 

1.0 pt – 1.0 qt 

OR 

Banvel 

0.25 - 0.50 pt 

OR 

Clarity 

0.25 - 0.50 pt 

+ amine 2,4-D 

0.75 - 1.5 pt 

dicamba 

0.13 -.25 lb 

+ amine 2,4-D 

0.37 - 0.75 lb 

Time To Apply 



41 



Several young broadleaf 

weeds 

Remarks 

Consult label for weed species 

controlled by the different rates and for 

grazing and hay making restrictions of 

treated forage. 

NOTE: Herbicide treatments recommended on permanent pastures are also recommended for bermudagrass. Do not apply above 

mentioned herbicides to temporary broadleaf pastures such as alyce clover, peas, vetch, or clover. Currently there are no 

recommended herbicides for temporary broadleaf pastures. 

FORAGE SORGHUM OR SORGHUM SUDAN HYBRIDS 

Preemergence 

AAtrex 4L 

3.2-4.0 pt 

AAtrex 80W 

2.0-2.5 lb 

AAtrex Nine-O 

1.7-2.2 lb 

Postemergence 

2,4-D Amine 

1.0 qt 

Weedmaster 

1.0 - 2.0 pt 

atrazine 

1.6-2.0 lb/A 

2,4-D 

1.0 lb 

dicamba 

0.13 - 0.25 lb 

+ amine 2,4-D 

0.37 - 0.75 lb 

BERMUDAGRASS ESTABLISHMENT (sprigging only) 

Drexel diuron 

Karmex 

1 - 3 lbs 

ALFALFA 

Preemergence 

Balan 1.5/gal 

3.0 qt-lt-med soil 

4.0 qt-hvy soil 

Eptam or GENEP 

6 lb/gal 

2.0 qt on all soils 

Postemergence 

Butoxone or Butyrac 

2.0 qt 


diuron 

0.8 - 2.4 lb 

benefin 

1.12 - 1.5 lb 

EPTC 

3.0 lb 

2,4-DB amine 

1.0 lb 

After planting Some grasses and 


Do not use on light soils. 

After grass is well Annual broadleaf weeds Do not graze lactating dairy animals 

established and 

broadleaf weeds are 

small. 

within 7 days after treatment. 

Same as above Same as above Same as above 

After planting and 

before emergence 

of bermudagrass 

and weeds. 

2 - 3 weeks before 

planting until 

planting. 

Crabgrass, pigweeds, 

morningglories, others 


and many of the small 

seeded broadleaf 

weeds 

Just before planting Most annual grasses 



nutsedge 

After alfalfa 

seedlings have 2 or 

more true leaves 

and weeds are in 

seedling stage. 



including winter weeds 

such as dock, henbit, 

chickweed. Also annual 

summer broadleaf 

weeds in the seedling 

stage 

DO NOT GRAZE WITHIN 70 DAYS OF 

APPLICATION. May cause temporary 

burn if bermudagrass is emerged. Use 

only on bermudagrass stolons planted 

at least 2" deep or injury will occur. 

Incorporate thoroughly into upper 2 to 3 

inches of soil immediately after 

application. 

Incorporate thoroughly into upper 2 to 3 

inches of soil immediately after 

application. 

Do not graze or feed treated fields to 

livestock within 30 days after 

application. This material is similar to 

2,4-D, therefore, apply so as to avoid 

drift.



Broadcast 

ALFALFA 


Poast 

1.5 - 2.5 pt 

+ 2 pt/A COC 


Select 

8.0 - 16.0 oz 

+ 1 qt/A or 1% v/v COC 

Rate/Acre 

Active 

Ingredient 

sethoxydim 

0.28 - 0.47 lb 

clethodim 

0.125 - 0.25 lb 

Time To Apply 


exceed height 

limitations 


exceed height 

limitations 

42 




grasses 


grasses 

Remarks 

Control generally better if application is 

made prior to cutting. Height limitations 

vary with the grass to be controlled. 

Follow label. 

Addition of a spray grade nitrogen 

fertilizer or ammonium sulfate may 


label.



Broadcast 

Strawberry 

Devrinol 50DF 

8.0 lb 

Devrinol 2 EC 

2 gal 

Goal 1.6E 

1.25-2.5 pt 

Gramoxone Max 

1.3 pt/A 

+ NIS at 1 pt/100 gal 

(0.33 oz/gal + 0.33to 0.5 

oz NIS) 


2 pt/A 

Poast 

1.5-2.5 pts + 2 pt COC 

(1.3-2 oz/gal + 1.3 oz 

crop oil concentrate) 

Princep 4L 

1-2 qt 

Princep 4L 

1-2 qt + 

Gramoxone Extra 

1.5 pt/A 

+ nonionic surfactant 

1-2 pt/100 gal 

Select 

6-8oz 

+ COC at 1 gal/100gals 

(0.33-0.66 oz/gal 

+1.3 oz COC/Gal) 

Rate/Acre 

Active 

Ingredient 

napropamide 

4.0 lb 

oxyfluorfen 

0.25-0.50 lb 

paraquat 

0.49 lb 

sethoxydim 

0.3-0.5 lb 

simazine 

1-2 lb 

simazine 

1-2 lb + 

paraquat 

0.47 lb 

clethodim 

0.1 to 0.125 lb 

Time To Apply 

Post transplant and 

established plants 

Fallow bed 

treatment 

FRUIT CROPS 

43 





Winter annual broadleaf 

weeds 

Postemergence Annual broadleaf and 

grasses; suppression of 

perennials in the 

interspaces and 

around base of 

bushes or vines 

Postemergence Perennial and 


Preemergence in 

row middles 

Postemergence 

directed spray 

Postemergence to 


grasses 

Blackberries also Trailing Blackberries (Dewberries) 

Drexel simazine 4L, 

90DF 

Princep 4L, 

Riverside Simazine 4L or 

90DF 

OR Caliber 90: (single 

application) 2-4 lb ai/A in 

40 gal water; 2-4 qts 

4L/A; 2.2-4.4 lb 90, 90 

DF/A 

simazine Spring or fall 

preemergence 

Annual bluegrass, large 

crabgrass, henbit, 

evening-primrose, 

chickweed and other 

weeds listed on the 

label 

Weeds controlled by 

Princep 4L plus those 

controlled by 



grasses 

Annual weeds and 

grasses 

Remarks 

Apply prior to weed emergence. 

Treatment must be irrigated in within 24 

hours with sufficient water to wet soil to 

depth of 2 to 4 inches. Do not apply 

from bloom through harvest. 

30-day interval from treatment until 

planting. Apply to clean, smooth, 

established beds. One-fourth inch of 

rainfall is necessary to activate 

chemicals. 

Apply in a minimum of 20 gal water/A. 

Apply as a coarse-directed spray 

between rows with shields to avoid drift 

injury from the fine spray mist. Do not 

apply within 3 days of harvest. Do not 

apply more than 3 times per season. 

Do not allow spray to contact 

strawberry plants. 

Bearing and non-bearing. Use flat fan 

nozzle tips. Do not apply within 7 days 

of harvest. Do not exceed 2.5 pts of 

Poast per season. 

Apply to furrows between raised beds 

covered with plastic mulch in a 

minimum of 20 gals of water per acre 

after transplanting when the furrows are 

firm, free of standing water and prior to 

the emergence of weeds. (Section 24C 

label) 

Apply to furrows between raised beds 

covered with plastic mulch in a 

minimum of 20 gal/water per acre. 

Apply as a coarse spray with shields to 

avoid drift injury from the fine spray 

mist. Apply after transplanting when 

furrows are firm and free of standing 

water. 

Do not apply under stressed conditions 

or if rainfall is expected within 4 days of 

harvest. Do not apply more than 8 oz/A 

in a single application. For repeat 

applications make at a minimum of 14day 

intervals. 

Apply single application in spring before 

bud break and before weed emergence 

or split applications once in spring and 

once in fall. On plants less than 6 

months old, use one-half rate.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

Blackberries also Trailing Blackberries (Dewberries) continued 

Fusilade DX 

2-3 pt 

Gramoxone Max 

1.3-2.7 pt/A 


2–4 pt/A 

Poast 

1.5-2.5 pt 

Surflan AS 

2.0-6.0 qt 

Blueberries 

Devrinol 10G 

30-150 lb/A 

Direx 4L/Diuron 4L 

3-6 pts 

Diuron 80W 

Karmex DF 

2-4 lbs 

Drexel simazine 

4L, 90DF Princep 4L, 

or Caliber 90: (single 

appl.) 

2-4 lb ai/A in 40 gal 

water; 

2-4 qts 4L/A; 

2.2-4.4 lb 90 DF/A 

Fusilade DX 1-1.5 pt 

DX/A 

Gramoxone Max 

1.3-2.7 pt 


2–4 pt/A 

fluazifop 

0.25-0.375 lb 

paraquat 

0.49-1.0 lb 

sethoxydim 

0.3-0.5 lb 

oryzalin 

2.0-6.0 lb 

napropamide 

3-5 lb/A 

diuron 

1.5-3 lbs 

simazine 

fluazifop 

0.25-0.375 lbs 

paraquat 

0.49 – 1.0 lb 

44 



Postemergence Bermudagrass and 

annual weeds 

Postemergence 

directed spray. Apply 

before emergence of 

new canes or shoots 

Annual weeds and 

grasses; top kill and 

suppression of 


interspaces and around 

base of bushes or vines 

Postemergence Perennial and 


Spring 

preemergence 


certain annual broadleaf 

weeds 

Remarks 

Apply to NON-BEARING plants that will 

not be harvested within 1 year. DO 

NOT contact blackberry foliage. 

Apply in 50 gal water. Add an 

approved nonionic surfactant at 1-2 

pt/100 gal of spray. Apply as a coarsedirected 

spray to avoid drift injury from 

fine spray mist. 

Apply to NON-BEARING plants that will 

not be harvested within 1 year. Use flat 

fan nozzle tips. Always use 

nonphytotoxic oil concentrate (1 

qt/ acre). 

Use low rate for short-term control; high 

rate for long-term control. DO NOT 

apply to newly established plantings 

until soil has settled. Apply before 

annual weeds emerge. 

Preemergence Annual weeds Apply to weed-free soil or in the fall 

prior to annual weed emergence. May 

be used on newly planted and 

established plants. DO NOT apply to 

newly established plant until soil has 

settled. Within 24 hours of treatment, 

Devrinol must be irrigated in with 

sufficient water to wet soil at a depth of 

2-4". 

Preemergence Annual weeds Use ONLY under plants established in 

the field for 1 year. Repeat treatment in 

fall after harvest. DO NOT use in soils 

with less than 2% organic matter. 

Spring or fall 

preemerge 

Annual weeds 

and grasses 

Make single application in spring before 

bud break and before weed emergence 

or split applications once in spring and 

once in fall. On plants less than 6 mo. 

old use one-half rate. 

Postemergence Annual weeds Apply to NON-BEARING bushes only 

that will not be harvested within one 

year. Direct spray. DO NOT contact 

blueberry foliage. Always use a crop oil 

concentrate or a nonionic surfactant. 

Broadleaf weeds and nutsedge will not 

be controlled. 

Postemergence 

directed spray. Apply 

before emergence of 

new canes or shoots 

Annual broadleaf weeds 

and grasses; top kill 



interspaces around 

base of bushes or vines 

Apply in 50 gal. water. Add an 

approved nonionic surfactant at 1-2 

pt/100 gal spray. Apply as a coarsedirected 

spray to avoid drift injury from 

the fine spray mist.



Broadcast 

Blueberries (continued) 

Poast 

1.5-2.5 pt/A 

Solicam DF 

2.5-5.0 lbs 

Evital 

4-8 lb/A 80-160 lb 5G/A 

Rate/Acre 

Active 

Ingredient 

sethoxydim 

0.3-0.5 lb/A 

norflurazon 

2.0-3.9 lbs 

Select 

clethodim 

6-8 oz. for annual grass; 0.09-0.25 lb/A 

8-10 oz. for 

plus COC 1qt/A 

johnsongrass or 

8-16 oz. for 

bermudagrass 

1% v/v 

Surflan 4AS 

2-6 qt 

Citrus 

Gramoxone Max 

1.7 – 2.7 pts 

+ NIS at 1-2pt/100gal or 

1 gal/100gal COC. 

(0.33-0.66 oz/gal + 

0.33-0.66oz NIS/gal) 


2.5–4 pt/A 

Krovar I DF 

Trees more than 

3 years old. 

Single application: 

2-4 lb-lt soil 

4-6 lb-hvy 

Repeat appl: 

Make two applications 

(spring & summer) to 

control perennial weeds. 

2 lbs - coarse soils 

3 lbs - fine soils 

oryzalin 

2-6 lbs 

paraquat 

0.64-1.0 lbs 

bromacil 40% 

+ diuron 40% 

1.6-4.8 lbs 

Time To Apply 

45 



Remarks 

Postemergence Annual weeds Apply to bearing or non-bearing 

bushes. Direct spray. Use flat nozzle 

tips. Always use a non phytotoxic oil 

concentrate. Broadleaf weeds and 

nutsedge will not be controlled. 

Preemergence Annual grasses, some 

broadleaf weeds, 

perennial weeds 


exceed height 

limitations 


grasses 

Preemergence Annual grasses and 


Apply to emerged 

weeds when they 

are small (1-6" in 

height) 

Annual grasses & 

broadleaf weeds and 

grasses; top kill and 


perennials 

Late winter, early Most annual weeds & 

spring, shortly before perennials such 

weeds emerge. as johnsongrass and 

Spray on bare ground bermudagrass 

Apply (a) in fall or (b) in early spring 

prior to weed emergence. West of 

Mississippi river, delay applications 

until 6 months after planting. East of 

the river, wait until the soil settles. 

Make only 1 application per year. Do 

not apply within 60 days of harvest. 

Addition of a spray-grade nitrogen 



label. Apply to non-bearing plants 

only. 

DO NOT apply to newly established 

plants until soil has settled. Apply 

before annual weeds emerge. 

Apply in 30 gal water. Do not allow 

spray to contact green stems, fruit or 

foliage because injury may result. Do 

not spray under windy conditions. Use 

a shield for young trees. Do not allow 

animals to graze treated areas. Do not 

apply this product through any type of 

irrigation system. Check label for tankmixes 

with other herbicides. 

Apply with a properly calibrated fixedboom 

power sprayer as a band or 

broadcast treatment beneath and/or 

between trees. Use a minimum of 30 

gal/A. Avoid overlapping, and shut off 

spray boom while starting, turning, 

slowing, or stopping or injury to trees 

may result. Continuous agitation in the 

spray tank is required to keep the 

material in suspension. Best results are 

obtained if treatment is made to moist 

soil, or moisture is supplied within two 

weeks after application. Use higher 

rates for maximum suppression of 

perennials. NOTE: Avoid contact with 

fruit and foliage. Temporary yellowing 

of citrus leaves may occur following 

treatment. Because injury to citrus 

trees may result, do not use on soils 

low in organic matter (less than 1%), 

poorly drained soils, gravelly soils, nor 

thinly covered or exposed subsoils. Do 

not treat diseased trees such as those 

with root rot. Do not use in citrus 

groves interplanted with other trees or 

desirable plants or in home citrus 

plantings or in areas where roots of 

valuable plants or trees may grow into 

the treated soil.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

Grapefruit, kumquat, lemon, lime, orange, tangelo, tangerine, satsuma 

Galigan 2E 

Goal 2 XL, 1.6 E 

Preemergence 

8 pts/A + 2 pts NIS 

10 pt/A + 2 pts NIS 2 E 

Post emergence 

2 to 8 pts/A + 2 pts NIS 

2XL, 2 E 

2.5 - 10 pt/A + 2 pts NIS 

1.6 E 

Hyvar X 

Single application: 

4-5 lbs - light soils 

5-6 lbs - medium soils 

6-8 lbs - heavy soils 

Two applications 

(spring and summer) 

at least 60 days apart, 

3 to 4 lbs/A 

Poast 1.5 EC 

1.5 2.5 pt/A 

2 pt + COC/A (1.3 

oz/gal + 1.3 oz COC) 

torpedo/EC 

225-3.75 pt/A 

+ 1 gal/COC/100 gals. 

(1.9 – 2.9 oz/gal + 1.5 

oz. COC 

Roundup Original 

Roundup Ultra 

Roundup UltraMax 

Rattler 

Touchdown 

Glyphomax 

Glyphosate 

others 

Annual weeds 

1-3 pts 

Perennial weeds 

4-10 pts 

oxyfluorfen 

Preemergence 

2 lb/A 

Postemergence 

0.5 to 2 lb/A 

bromacil 

1.6 to 4.6 lb/A 

sethoxydin 

0.28-0.47 

glyphosate 

Annual weeds 

0.5-1.5 lbs 

Perennial weeds 

2-5 lbs 

Apply only after 

foliage has fully 

hardened off. 

Non-bearing trees 

Preemergence, single 

application in late 

winter, early spring. 

Apply just before 

weed growth to bare 

ground. Two 

applications required 

to control perennial 

weeds 

Postemergence 

Check label for 

maximum weed 

height and rates 

Apply to foliage when 

weeds & grasses are 

growing and at the 

recommended growth 

stage for each 

species. 

Recommended for 

established groves 

(See label 

instructions) 

46 



Remarks 

Broadleaf weeds Do not apply during periods of new 

foliage growth. Use a low pressure 

sprayer and direct at base of plant. 

Avoid spray contact on foliage. Use 40 

gals water/A for PRE applications and 40 

to 100 gals for Post applications. Do not 

apply more than 16 pts Goal in one year. 

Check label for approved tank-mixes 


Annual grasses, 


perennial weeds and 

sedges 


grasses 

Most emerged annual & 

perennial grass and 


Use only on trees established for 4 years 

or longer. Hyvar is toxic to many trees 

and plants. Consult label before use. 

Apply with a properly calibrated fixedboom 

sprayer as a band treatment 

beneath the trees. Use a minimum of 30 

gallons/A to obtain uniform coverage. 

Continuous agitation in the spray tank is 

required to keep the material in 

suspension. NOTE: Avoid contact with 

fruit and foliage. Temporary yellowing of 

citrus leaves may occur following 

treatment. Because injury to citrus trees 

may result, do not use on soils low in 

organic matter (less than 1%), poorly 

drained soils, gravelly soils, nor thinly 

covered or exposed subsoils. Do not 

treat diseased trees such as those with 

root rot. Do not use in citrus groves 

interplanted with other trees or desirable 

plants or in home citrus plantings or in 

areas where roots of valuable plants or 

trees may grow into the treated soil. 

Bearing and non bearing trees. 15 days 

to harvest. Apply in 10-20 gallons water 

per acre with 40-60 psi. Direct away 

from foliage and fruit. A slight leaf 

speckling or burn can occur. Citrus will 

outgrow these symptoms and later 

growth is not affected. 

Provides top kill plus destruction of roots, 

rhizomes, etc. Not a residual herbicide. 

Follow with a label-approved program for 

effective annual and perennial seasonlong 

weed control. Apply in 3 to 30 gals 

of water per acre as a directed spray 

towards base of tree. Spray may come 

in contact with brown bark area of trunk 

without injury. Do not spray green bark. 

Do not allow spray or spray drift to 

contact foliage of tree since severe 

damage or destruction may occur. Avoid 

contact with root suckers or water 

sprouts growing at base of tree. Do not 

mow or till prior to treatment. Check 

label for approved tank-mixes.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Grapes (Muscadine and Bunch) 

Diuron 4L/Direx 4L 

1.5-4.5 qt/A 

Karmex DF/Diuron 80W 

2-4 lbs 

Fusilade DX 

1-1.5 pt/A 

Goal 2XL 

Preemergence 

5-8 pts 2XL/A 

Postemergence 

2-8 pts 2XL/A 

Gramoxone Max 

1.7-2.7 pt/A 


surfactant 


2.5–4 pt/A 

Poast 

1.5-2.5 pts 

Princep 90DF 

2.2-5.3 lbs 

Princep 4L Riverside 

Simazine 4L or 90DF 

2.0-4.8 qts 

Simtrol 4L 

2.0-4.8 qts 

Roundup Ultra/others 

2-3 pts for annuals 

4-10 pts for perennials 

Surflan 4AS 

2-6 qts 

diuron 

1.5-4.5 lbs 

fluazifop 

0.25-.375 lbs 

oxyfluorfen 

1.2-2 lbs 

0.5-2 lb/A 

paraquat 

0.64 - 1.0 lbs 

sethoxydim 

0.3-0.5 lbs 

simazine 

2-4.8 lbs 

glyphosate 

1.1-5 lbs 

oryzalin 

2-6 lbs 

Time To Apply 

47 



Remarks 

Preemergence Annual weeds Apply only under vines established 3 

years. Apply in spring before annual 

weeds emerge. DO NOT apply to vines 

with trunks less 1.5" diameter. DO NOT 

use on soils with less than 1% organic 

matter. Severe injury may occur if heavy 

rainfall or more than 1" of irrigation water 

follows treatment. 

Post emergence Annual weeds 

and grasses 

Postemergence Broadleaf weeds 

(SEE LABEL) 

Apply when grasses 

are succulent and 

new growth is from 

1-6" high 


broadleaf weeds; 

top kill and suppression 

of perennials in the 

interspaces and 

around base of bushes 

or vines 

Post emergence Annual grasses, some 



certain broadleaves 

Post emergence Annual and perennial 

weeds 


certain annual 


Apply to NONBEARING vines not 

harvested within 1 year. Use flat fan 

nozzle and do not contact foliage. 

Always use crop oil concentrate or non 

ionic surfactant. 

Add Triton AG98 spreader (80% active 

nonionic) at 2 pt/100 gal spray. For 

additional postemergence weed control, 

tank mix with either Gramoxone Extra or 

glyphosate. For residual grass control, 

tank mix with Devrinol, Karmex, Solicam, 

simazine or Surflan. When tank mixing, 

always read and follow all individual 

manufacturer labels. 

Apply as directed spray in 30 gal water. 

Add an approved nonionic surfactant at 

1-2 pt/100 gal. spray. For mature, 

woody weeds, late germinating weeds 

and perennials, retreatment or spot 

treatment may be necessary. Do not 

allow spray to contact green stems, fruit 

or foliage. Injury may result. Do not 

spray under windy conditions and use 

shield for young vines. Do not allow 

animals to graze on treated areas. 

Apply to bearing and non-bearing vines. 

Use flat fan nozzle tips. Always use 

nonphytotoxic oil concentrate. Use low 

rate on annual grasses up to 6" tall; high 

rate on annual grasses up to 12" tall. 

Use only under vines established for 3 

years. Apply in fall or spring. If applied 

in the fall, follow with a different 

preemergence herbicide. DO NOT use 

on sandy, sandy loam, or gravelly soils. 

DO NOT allow spray to contact foliage or 

green bark of canes. Allow a minimum 

of 14 days between last application to 

harvest. Wiper applicator: 33% solution. 

Apply in spring to bearing vines. DO 

NOT apply to newly established vines 

until soil is settled. Existing weed growth 

should be destroyed by shallow tillage or 

other treatment. Irrigation needed (1 

1/2") within 21 days to move Surflan into 

weed germination zone.



Broadcast 

Mayhaws 

Goal 2XL 

Preemergence 

5-8 pts 2XL/A 

Postemergence 

2.8 pt 2XL/A 

Peaches 

Devrinol 50DF 

8.0 lbs 

Direx 4L/Diuron 4L 

6 pt/A 

Karmex DF/Diuron 80W 

4 lb/A 

Fusilade DX 

0.5-1.5 pt/A 

Rate/Acre 

Active 

Ingredient 

oxyfluorfen 

1.25-2 lb/A 

0.2-2 lb/A 

napropamide 

4.0 lbs 

diuron 

3.0 lbs 

fluazifop 

0.25–0.375 lb/A 

Time To Apply 

Apply to dormant 

trees only. DO NOT 

apply after bud swell 

48 



Remarks 

See label See label 

Preemerge Annual grasses and 

certain broadleaf 

weeds 

Apply to a weed-free soil surface in the 

spring prior to annual weed emergence. 

DO NOT apply to newly-transplanted 

trees until the soil has settled and no 

cracks are present. Devrinol must not 

remain on the soil surface for more than 

24 hours after treatment. If rainfall does 

not occur within 24 hours of treatment, 

Devrinol must be irrigated (overhead 

sprinkler) with sufficient water to wet the 

soil to a depth of 

2-4". Paraquat (1-2 qts/A + 8 oz 

nonionic surfactant/100 gal. of spray 

solution) may be tank-mixed with 

Devrinol 50WP if weeds are present. 

Preemergence Annual weeds Use only where peach trees have been 

established for at least 3 years. Apply 

as directed spray, avoiding contact of 

fruit and foliage with spray. Refer to 

label for soil limitations. Days to 

Harvest: 

3 months. Provides season-long control 

of annual grasses and broadleaf weeds 

when used as preemergence treatment. 

Can be utilized with paraquat or 

glyphosate to obtain season-long control 

of most weeds. Can also be tank-mixed 

with other soil active herbicides for 

improved control of a wider range of 

weed species. 

Postemergence Johnsongrass, 

bermudagrass, 

annual grasses. 

Apply to trees that will not be harvested 

within 14 days of application. Apply as a 

directed spray using 25 gal water/acre 

30 to 60 psi pressure. Use flat fan 

nozzle tips and do not contact tree 

foliage. Always use a crop oil 

concentrate (1 qt/25 gal water/acre) or a 

nonionic surfactant (0.5 pt/25 gal 

water/acre). Make application to 

johnsongrass at 12 to 18” in height, 

bermudagrass 3” tall or with 4 to 8” 

runners; annual grasses 2 to 8” tall.



Broadcast 

Peaches (continued) 

Goal 2XL 

Preemergence 

5-8 pts 2XL/A 

Postemergence 

2-8 pts 2XL/A 

Gramoxone Max 

1.7 - 2.7 pt/A 


surfactant 


2.5–4 pt/A 

Rate/Acre 

Active 

Ingredient 

oxyfluorfen 

1.25-2 lb/A 

0.5-2.0 lb/A 

paraquat 

0.64-1.0 lb 

PARAQUAT TANK MIX paraquat 

0.625-0.94 lb + 

Princep 

1.0-2.0 lb 

Karmex 80W 

1.0-2.0 lbs + 

Sinbar 80W 

1.0-2.0 lb 

Poast 

1.5-2.5 pts 

Princep 90DF 

2.2-4.4 lbs 90%/A 

Princep 4L or Caliber 90 

4-8 pts/A 

Simazine 4L or 90 

DF Drexel 

2-4 pts 

Drexel Simazine 

1-2 lbs + 


0.625-0.94 lb or 

Roundup Ultra 

1-5 lb. Or 

Surflan 2-4 

diuron 

0.8-1.6 lbs + 

terbacil 

0.08-1.6 lbs 

sethoxydim 

0.3-0.5 lbs 

lbsimazine 

2.0-4.0 lbs 

SIMAZINE 

TANK MIXES 

Time To Apply 

Preemergence and 

post emergence 

(Dormant trees) 

Apply as a directed 

spray when weeds 

and grasses are 

succulent and new 

growth is from 

1-6" high 

Spring or after 

harvest in fall 

49 



Remarks 

See label Directed spray to the soil and the base of 

trees. For additional postemergence 

weed control, Goal 2XL may be tank 

mixed with either Devrinol, Karmex, 

Kerb, simazine, Solicam, or Surflan. 

When tank-mixing, always read and 

follow all product labels. Apply to 

dormant fruit plantings for preemergent 

broadleaf weed control. Can tank-mix 

with Devrinol, Kerb, simazine or Surflan 

for grass control. APPLY ONLY TO 

DORMANT BEARING AND NON- 

BEARING TREES for control of certain 

annual broadleaf weeds. DO NOT apply 

during growing season or bud-swell 

stage of growth. 




of perennials 

Apply in 30-150 gal. water. For mature, 

woody weeds, green suckers, late 

germinating weeds, re-treatment or spot 

treatment may be necessary. Do not 

allow spray to contact green stems, fruit 

or foliage because injury may result. Do 

not spray under windy conditions. Use a 

shield for young trees. Do not allow 

animals to graze treated areas. Do not 

harvest within 14 days of application. No 

more than 3 applications per year may 

be used. 

Annual weeds Use this tank-mix only under trees 

established for at least 2 years. Apply in 

spring or after harvest in the fall before 

weeds emerge or less than 2" tall. A 

combination provides a longer period of 

weed control. DO NOT USE on sandy, 

loamy, or gravelly soils. 

Postemergence Annual grasses Apply to non-bearing trees that will not 

be harvested within 25 days of 

application. Apply as a directed spray 

using 20 to 50 gal water/A and 40 to 60 

psi pressure. Use flat fan nozzle tips. 

Use a non phytotoxic oil concentrate (1 

qt/A). Use low rate on annual grasses 

up to 6 inches tall, and high rate on 

annual grasses up to 12 inches tall. 



weeds 

Use simazine ONLY under trees 

established in the orchard for 1 year. 

Apply in fall or spring. Fall application 

controls a broader weed spectrum than a 

spring application. If applied in the fall, 

follow a different preemergence 

herbicide in the spring. Use the low rate 

on coarse-textured soils. Some 

chlorosis may be observed in areas 

where little or no topsoil is present. DO 

NOT apply to gravelly, sandy or sandy 

loam soils.



Broadcast 

Peaches (continued) 

Rate/Acre 

Active 

Ingredient 

Select 

clethodim 

6-8 oz. for annual grass; 0.09-0.25 lb/A 

8-10 oz. for 


johnsongrass or 

8-16 oz. for 

bermudagrass 

1% v/v 

Sinbar 80W 

2-4 lbs 

Solicam DF 

2.5 – 5.0 lb 

Surflan 4AS 

2.0-4.0 qts 

Pecans 

Devrinol 50DF 

8.0 lbs 

Fusilade 2000 

2-3 pts 

Gramoxone Max 

1.7 - 2.7 pt/A 


surfactant 


2.5–4 pt/A 

terbacil 

1.6-3.2 lbs 

norflurazon 

2.0 – 3.9 lb/A 

oryzalin 

2.0-6.0 lbs 

napropamide 

4.0 lbs 

fluazifop 

0.25-0.375 lbs 

paraquat 

0.64-1.0 lbs 

Time To Apply 


exceed height 

limitations 

50 




grasses 

Remarks 





only 

Spring Annual weeds Use Sinbar only under trees established 

in the orchard for at least 3 years. Some 

chlorosis of weakened trees occurs. 

Control of established perennial weeds 

may be erratic. DO NOT use on sandy, 

sandy loam, gravelly soils, on eroded 

areas where subsoil tree roots are 

exposed, or on any soil with less than 

1% organic matter. 

Prior to weed seed 

germination when 

rainfall or irrigation is 

likely within 4 weeks 

of application 

Spring 

Preemergence 




certain annual 


Postemergence Johnsongrass & 

bermudagrass 

Apply when weeds 

are young and 

succulent (16" tall). 

Mature weeds are 

less susceptible 

Apply post-harvest in the fall or early 

spring. Fall application controls a 

broader weed spectrum than spring. 

Delay application to newly established 

trees until 18 months after planting if 

west of the Mississippi River, and 6 

months if east of the river. Do not apply 

within 60 days of harvest. Use the low 

rate on coarse-textured soils, high rate 

on fine-textured soils. Make one 

application per year. DO NOT graze 

treated areas. 

Annual weeds Apply in spring before annual weeds 

emerge. Use this tank mix only under 

trees established in the orchard for at 

least 1 year. DO NOT apply to gravelly, 

sandy or sandy loam soils. 




of perennials; green 

suckers under 

filbert trees 

Use on non-bearing trees. Apply to 

weed-free soil surface in the spring prior 

to annual weed emergence. DO NOT 

apply to newly transplanted trees until 

the soil has settled. Devrinol must not 

remain on the soil surface for more than 

24 hours of treatment. Devrinol must be 

irrigated in (overhead sprinkler) with 

sufficient water to wet the soil to a depth 

of 2"-4". DO NOT graze treated areas. 

Apply to NON-BEARING trees that will 

not be harvested within one year of 

application. Apply as a directed spray 

using 25 gal/water/acre and 30 to 60 psi 

pressure. Use flat fan nozzle tips and 

DO NOT contact pecan tree foliage. 

Always use a non phytotoxic crop oil 

concentrate or a nonionic surfactant. 

Apply in 30 gal. water. Add an approved 

nonionic surfactant at 1-2 pt/100 

gal/spray. Apply as a direct spray for 

thorough weed coverage; repeat as 

necessary. Spray drift will cause injury. 

Do not allow spray to contact foliage, 

fruit, or stems. Do not graze livestock on 

treated areas.



Broadcast 

Pecans (continued) 

Poast 

1.5-2.5 pts 

Roundup Ultra 

2-10 pt/A 

Select 

6-8 oz. for annual grass; 

8-10 oz. for 

johnsongrass 

8-16 oz. for 

bermudagrass 

Sinbar 80W 

2-3 lbs 

Solicam DF 

1.25-5.0 lbs 

Surflan 4AS 

2.0-6.0 qts 

CHEMICAL MOWING 

glyphosate 

See Label 

Rate/Acre 

Active 

Ingredient 

sethoxydim 

0.3-0.5 lb 

glyphosate 

1.0-5.0 lbs 

clethodim 

at 0.09-0.25 lb/A 


or 1% v/v 

terbacil 

1.6-2.4 lbs 

norflurazon 

1.0-4.0 lbs 

oryzalin 

2.0-6.0 lbs 

Roundup Ultra 

See label 

Time To Apply 

51 



Remarks 

Preemergence Annual grasses Apply to non-bearing trees that will not 

be harvested within 1 year of application. 

Apply as a directed spray using 20 to 50 

gal water/A and 40 to 60 psi pressure. 

Use flat fan nozzle tips. Always use a 

non-phytotoxic oil concentrate (1 qt/A). 

Use low rate on annual grasses up to 6 

inches tall, and high rate on annual 

grasses up to 12 inches tall. Broadleaf 

weeds and nutsedges will not be 

controlled. 

Postemergence Annual and perennial 

weeds 


exceed height 

limitations 


grasses 

For use on bearing and non-bearing 

trees. DO NOT allow spray to contact 

trees. Allow a minimum of 21 days 

between application and harvest. 





only 

Preemergence Annual weeds Use Sinbar only on trees that have been 

established 1 year. 



Preemergence Annual grasses & 


Apply 1 to 2 weeks 

after full greening 

of bahiagrass 

Bahiagrass seedhead 

and vegetative 

suppression 

Apply to bearing, non-bearing, and newly 

set trees for control of annual grasses 

and suppression of perennial weeds. 

Apply post-harvest in the fall or early 

spring. Fall application controls a 

broader weed spectrum than spring. 

Use the low rate on coarse-textured 

soils, high rate on fine-textured soils. 

Make one application per year. DO NOT 

graze treated areas. 

Use on non-bearing and bearing trees 

for control of annual grasses and certain 

broadleaf weeds. Use low rate for 

shorter control (2-4 mos.); high rate for 

long term control (6-8 mos.). DO NOT 

apply to newly-planted trees until soil 

has settled and no cracks are present. 

Apply before annual weeds emerge in 

the spring. Existing weed growth should 

be destroyed by shallow tillage or by a 

tank mixture with paraquat (1-2 qts/A + 8 

oz. nonionic surfactant/100 gal. of spray 

solution) or Roundup (1-5 qts/A + 

surfactant). 

For suppression in pecan row middles. 

Applications must be made prior to 

seedhead emergence. To extend period 

of growth suppression, apply up to two 

sequential applications at 45-day 

intervals. Sequential applications must 

be made prior to seedhead emergence. 

Allow a minimum of 21 days between 

application and harvest. Can be tankmixed 

with Devrinol, Kerb, Simazine or 

Surflan for extended grass control.

GRAIN SORGHUM 

General Comments on Atrazine Use: 

1. Atrazine rates cannot exceed a total of 2.5 lb. ai/acre per season. 

2. Follow the label concerning maximum atrazine rates. 

Rate of 

Formulated 

Material for 1 Acre Rate/Acre 

Broadcast Active Ingredient 

PREPLANT (burndown) see also Burndown section 

Banvel 

0.5 pt 

Banvel SGF 

1 pt 

Clarity 

8 oz/A 

PREEMERGENCE 

AAtrex 80% WP 

2.0 lb-med & hvy soil 

OR 

AAtrex 4L 

3.5 pt-med & hvy soil 

dicamba 

0.25 lb/A 

atrazine 

1.6-2.0 lb/A 

Time To Apply 


prior to planting for 

emerged weeds 

52 





weeds 

See label 


seeded grass and 


NOTE: See discussion of various Dual formulations in the corn section. 


lt soil-Do not use 

med soil-1.6-2.1 qt 

hvy soil-1.6-2.1 qt 

Bicep Lite IIMagnum 

lt soil-Do not use 

med soil-1.1-1.5 qt 

hvy soil-1.1-1.5 qt 


Dual Magnum 

Cinch 

lt soil-1.0-1.33 pt 

med soil-1.33-1.5 pt 

hvy soil-1.33-1.67 pt 

Guardsman Max 

lt soil-do not use 

med & hvy soil 

3 to 4 pt 

G-Max Lite 

soil OM < 3% 

coarse 2-2.5 pts 

medium –fine 

2.5-3 pts 

Lariat 

3.0-3.5 qt-med soil 

3.5-4.0 qt-hvy soil 

Lasso 

2.5-3.0 qt-lt soil 

2.5-3.0 qt-med soil 

3.5-4.0 qt-hvy soil 

Outlook 

lt soil-12 to 14 oz 

med & hvy soil 

14 to 18 oz 

metolachlor 

plus 

atrazine 

1.7-2.25 lb/A 

s - metolachlor 

1.0 – 1.9 lb/A 

dimethenamid 

plus 

atrazine 

dimethenamid 

plus 

atrazine 

alachlor 

plus 

atrazine 

2.25 - 4.0 lb/A 

At planting Most annual grass 

and broadleaf 

weeds 


and broadleaf 

weeds 


and broadleaf 

weeds 



and broadleaf 

weeds 


and broadleaf 

weeds 

alachlor At planting Most annual grass 

and some broad- 

leaf weeds 

dimethenamid 

0.56 to 0.84 lb 


and broadleaf 

weeds 

Remarks 

Effective for controlling broadleaf weeds 

which have emerged before planting: 

henbit, smartweed, etc. If grass is present, 

mix with glyphosate or paraquat. 

Do not apply to soils with less than 1% OM 

or to soils of lighter texture than silt loams. 

Only sorghum or corn should be planted 

within 12 mos. on soil treated with atrazine. 

Same as above. Must use safened seed. 

Do not apply to light soils or any soils with 

less than 1% organic matter. *Must use 

safened seed. 

*Must use safened seed. Do not use on 

sweet or forage sorghum. If soil organic 

matter 3% or more, consult label for proper 

rate. 

Similar in activity to Lariat/Bullet or Bicep 

premixes. May be applied early 

postemergence up to 12” sorghum, but 

before broadleaf weeds are 1.5” tall and 

grasses have emerged. 

Do not apply to light soil. 

*Must use safened seed. 

*Must use safened seed. Addition of 

broadleaf weed control agent would be 

desirable. 

*Must use safened seed. Do not use on 

sweet or forage sorghum. If soil organic 

matter 3% or more, consult label for proper 

rate.

Rate of 

Formulated 

Material for 1 Acre Rate/Acre 

Broadcast Active Ingredient 

EARLY POSTEMERGENCE 

2,4-D amine at 

1.0 pt in 10-20 gal 

water 

AAtrex 80% WP 

1.5 lb sandy loam 



AAtrex 4L 

2.4 pt-sandy loam 



AAtrex Nine-0 or 

1.3 lb-sandy loam 



AAtrex 80% WP 

2.5 lb - all soil plus 1/2 

gal of crop oil/25 gal 

spray 

AAtrex 4L 

4.0 pt. + 1 qt of crop 

oil/25 gal spray 

AAtrex Nine-0 

2.2 lbs plus 1 qt of crop 

oil/25 gal spray 

Banvel 

0.5pt 

Banvel SGF 

1 pt 

Clarity 

8 oz/A 

Buctril 

1.0 - 1.5 pt 

Permit 

0.67 to 1.0 oz/A 

PREHARVEST 

Sodium chlorate 

4.5 - 6 lb/A 

Aim 

1.0 oz/A 

2,4-D amine 

0.5 lb/A 

atrazine 

1.25 - 2.5 lb/A 

atrazine 

2.0 lb + crop oil 

dicamba 

0.25 lb/A 

bromoxynil 

0.25 - 0.50 lb/A 

halosulfuron 

0.032 to 0.047 lb/A 

Sodium Chlorate 

Several brand names 

available. 2 gal of 3 

lb/gal or 1 gal of 

6 lb/gal. 

carfentrazone 0.0156 

lb/A 

Time To Apply 

After sorghum is 4- 

6" tall until 

flowering 

Before weeds 

are 1 1/2" tall 

and after sorghum 

has completely 

emerged 

Before weeds are 

1.5 inches tall and 

after sorghum is 4 

to 6 inches tall 

Spike to 15" tall 

sorghum, optimal 3 

to 5-leaf sorghum, 

weeds less than 3" 

tall 

Sorghum 2-leaf 

to 14" tall; 

weeds 2 to 4-leaf 

Sorghum 2-leaf to 

layby (before grain 

head emergence) 

7 to 10 days prior 

to harvest. 

3 days prior to 

harvest. 

53 




Small broadleaf 

weeds 

Most effective on 


Most effective on 



weeds 

See label for 

complete list 

Many broadleaf 

weeds 

Selected 


sedges 

Desiccation of 

green vegetation. 

Desiccation of 

morningglories 

Remarks 

After sorghum is 10"-12" tall. Use directed 

spray to keep 2,4-D out of whorl. Do not 

treat when sorghum is flowering. 

Weeds larger than 1.5 inches tall may not 

be killed. Low rate for broadleaf control 

only. Do not apply to sandy loam or lighter 

soil texture. Preferred application as 

directed spray but may be applied overtop 

where sorghum is not under stress. 

Sorghum should not be grazed within 21 

days after AAtrex is applied. Do not apply 

more than 2.5 lbs. ai per season. Follow 

label restrictions concerning maximum 

atrazine rates. 

Weeds larger than 1.5" tall may not be 

killed. Low rate for broadleaf control only. 

Do not apply to sandy loam or lighter soil 

textures. Preferred application as directed 

spray but may be applied overtop where 

sorghum is not under stress. Sorghum 

should not be grazed within 21 days after 

AAtrex is applied. Do not apply more than 

2.5 lb. ai per season. Follow label 

restrictions concerning maximum atrazine 

rates. 

Effective for controlling small broadleaf 

weeds like morningglory, smartweed, etc. 

Mixing with atrazine adds to residual 

control (up to 12" tall sorghum). Use drop 

nozzles if sorghum is taller than 8". 

Applied overtop. May serve as a 

replacement for 2,4-D in phenoxy sensitive 

areas. 

Use only a single application with the total 

rate not to exceed 1.0 oz/A per season. 

Use 1 to 2 qt/100gal NIS or 

1gallon/100gals COC. 

Follow label directions. 

Thorough coverage is essential using at 

least 10 gpa. Tank mixture can include 

sodium chlorate. 

Spot treatment for control of johnsongrass and other weeds. Mix 1 to 2 gallons Roundup Ultra per 100 gallons of water. Spray 

weeds to point of drip before grain sorghum heads. Sprayed sorghum and weeds will be killed. Apply with caution to prevent 

excessive crop injury.

HERBICIDE RESISTANCE 

Weed species found in Louisiana resistant to one or more families of herbicides. 

54 


Weed Resistant to: Herbicides Crop 

Common cocklebur (Xanthium strumarium) Arsenicals, Imidazolinones MSMA/DSMA; Scepter Cotton 

Johnsongrass (Sorghum halepense) ACCase inhibitors (graminicides) Poast, Fusilade, Select Cotton 

Ryegrass (Lolium multiflorum) ACCase inhibitors (graminicides) 

ALS Inhibitors 

Barnyardgrass (Echinochloa crus-galli) Ureas and amides 

Synthetic auxins 

Hoelon 

Oust 

Stam 

Facet 

Wheat 

Roadsides 

Itchgrass (Rottboellia cochinchinensis) ACCase inhibitors (graminicides) Fusilade Soybean 

For more information on herbicide resistance nationally or globally visit the International Survey of Herbicide Resistant Weeds 

website at http:www.weedscience.org/in.asp. 

Managing Resistance 

Simply changing to another herbicide with the same mode of action that you have been using will not control a 

resistant weed. For instance, if it is resistant to one of the graminicides (Fusilade DX, Assure II, Poast Plus, or Poast, 

for example) it is most likely resistant to all of the graminicides. But, there has been a johnsongrass biotype in 

Franklin Parish recently found to be resistant to Select. Similar patterns are seen with the ALS-inhibitors such as 

Classic, Londax, Scepter, etc. Also, some weeds are naturally resistant to herbicides; therefore, correct weed 

identification is of utmost importance if resistance is suspected. 

Crop rotation is a good tool for managing resistance because it allows for rotating modes of action. Tank-mixing 

herbicides with different modes of action are also good, but both herbicides must have activity on the same species. 

Using the same mode of action on different crops within the same field will not delay resistance, even though we are 

using different products. 

Mode of action of selected herbicides used in Louisiana. 

Herbicide active ingredient Mode of action 

Sulfometuron 

ALS inhibitor 

Bensulfuron 

Nicosulfuron 

Primisulfuron 

Metsulfuron 

Chlorimuron 

Imazaquin 

ALS inhibitor 

Imazethapyr 

Imazapyr 

Fluazifop-P 

ACCase inhibitor 

Sethoxydim 

Quizalofop 

Clethodim 

Fenoxaprop 

Diclofop 

Atrazine 

Photosynthesis inhibitor 

Simazine 

Diuron 

Fluometuron 

Msma 

Not completely understood 

Dsma 

Pendimethalin 

Cell division inhibitor 

Trifluralin 

Prodiamine 

Oryzalin 

Propanil Electron transport inhibitor 

Also see the burndown section for remarks on glyphosate-resistant marestail (horseweed). Glyphosate-resistant 

marestail has been confirmed in Arkansas and Mississippi. Marestail seed are spread by wind and may show up in 

northern areas of Louisiana without warning. Glyphosate-resistant pigweed has been confirmed in Georgia and 

several suspected sites are in Arkansas. One suspected site in Louisiana has been confirmed NOT RESISTANT. If 

you suspect herbicide resistance, please contact your local LSU AgCenter extension agent. 

Rice

Rate of Formulated Material 

for 1,000 square feet 

Basagran 4 EC 

1/2-3/4 fl oz/gal/1,000 sq ft 

Dacthal 75% WP 

sandy soil:4.0 oz/1,000 sq ft 

heavy soil:5.0 oz./1,000 sq. ft. 

Dual 8E 

sandy soil;1/2 fl oz/1,000 sq ft 

(1 tbsp) 

on heavy soil: 1.0 fl. oz/1,000 

sq ft 

(2 tbsp) 

Dual 25G 

sandy soil: 2.2 oz/1,000 sq ft 

heavy soil: 3.6 oz/1,000 sq ft 

Fusilade DX 

1.0 Tbl/gal 

always add a nonionic 

surfactant 

Poast 

1 1/2 - 1 2/3 Tbl/gal 

always add an equal amount of 

oil concentrate or at least a 

surfactant. 

Roundup Ultra/others 

1.0-2.0 fl oz/gal 

Several other brands available. 

Treflan 4 EC 

1/3 fl oz/1,000 sq ft (2 

teaspoons) 

heavy clay soil: 

1/2 fl oz/1,000 sq ft (4 

teaspoons) 

Treflan 4 EC 

1/3 fl oz/1,000 sq ft (2 

teaspoons) 

heavy clay soil: 

1/2 fl oz/1,000 sq ft (4 

teaspoons) 

HOME GARDENS 

Active 

ingredient Time to Apply Remarks 

bentazon Postememerge on 

young weeds 

DCPA 

metolachlor At planting. 

(preemerge) 

fluazifop Spray on young 


grassy weeds. 

sethoxydim Spray on young, 


grassy weeds. 

glyphosate Postemerge on 

weeds 

55 


Apply to young weeds in snap or lima beans, mint, southern 

peas, peanuts, English peas and corn. 

After planting Apply after planting snap beans (not limas), southern peas, 

greens, radish, garlic, onion, cole crops, Irish or sweet 

potatoes. 

After transplanting Apply after transplanting tomatoes, peppers, cole crops and 

cucurbits. Apply 4-6 weeks after transplanting eggplants. 

Apply before or after planting snap or lima beans, soybeans, 

sweet corn, peanuts, popcorn, Irish potatoes, southern peas, 

English peas and chickpeas. 

After planting Apply after planting snap or lima beans, sweet corn, peanuts, 

popcorn, Irish potatoes, southern pecans, English peas and 

chickpeas 

Spray to wet weed foliage. Use on asparagus, carrots, 

onions, spinach, sweet potatoes, hot peppers and non-bell 

peppers. 

Spray to wet weed foliage. Use on asparagus, beans, cole 

crops, cabbage, cucumbers, peanuts, greens, lettuce, 

melons, peas, peppers, pumpkins, potatoes, squash or 

tomatoes. 

A nonselective, postemerge to be used before planting or 

crop emergence on actively growing weeds. Avoid spray drift 

to desirable plants. Spray weeds to wet but not to drip. 

Crops labeled include beets, carrots, celery, corn, cole crops, 

English and southern peas, Irish potatoes, Jerusalem 

artichoke, lima and snap beans, lettuce, greens, okra, onion, 

garlic, peanuts, radish, soybeans, sweet potatoes and 

asparagus (before spears appear). 

trifluralin Before planting Incorporate before planting snap or lima beans, cole crops, 

Irish potatoes, sunflowers and greens. 

Before 

transplanting 

Incorporate before transplanting tomatoes, cole crops, 

pepper and celery. Also for asparagus beds and at half rate 

postemergence (crop) between onion rows. 

trifluralin Before planting Incorporate before planting snap or lima beans, cole crops, 

Irish potatoes, sunflowers and greens.


Rate lb ai/A 

Herbicide Rate product/A 

PREEMERGENCE HERBICIDES 

Aatrex 

Various other 

formulations 

(See labels) 

Atrazine 

1.0-2.0 lbs ai 

1.0 – 2.0 qt/A 

Balan 2.5 G Benefin 

2.0 – 3.0 lb ai 

120 lb/A 

Barricade 65 WG prodiamine 

0.75 lb ai fb 0.38 lb ai 

1.15 lbs/A fb 0.6 lb/A 

Bensumec 4 EC 

Pre-San 7 G 

Pre-San 12.5 G 

Betasan 4 E 

Devrinol 2G 

Devrinol 5G 

Devrinol 50 WP 

(see labels) 

Dimension 1 EC 

Dimension Ultra 40 

WP 

bensulide 

7.5 - 12.5 lb ai 

(various formulations) 

Napropamide 

2.0-3.0 lbs ai 

Rate/A varies by 

formulation (consult 

label) 

Dithiopyr 

0.25-0.68 lbs ai 

Dimension 1 EC 

2 qt/A 

Ultra 40 WP 

20 oz/A 

Gallery 75 DF isoxaben 

0.5-1.0 lbs ai 

0.7 – 1.3 lbs/A 

LAWNS AND OTHER TURF AREAS 

Rate of 

Formulated 

Material for 

1000 ft 2 



0.75 – 1.5 fl oz Florida betony, 

annual bluegrass, 

dollarweed, 

lespedeza, henbit, 

lawn burweed 

2.75 lb Crabgrass, 

goosegrass, Poa 

annua (annual 

bluegrass) and 

certain other 

annuals. 

0.4 oz followed by 

0.2 oz 

Rates vary due to 

several 

formulations 

(consult labels) 

Rate/1000 ft 2 

varies by 

formulation 

(consult label) 

1 EC = 2 fl oz 

40 WP = 0.46 oz 

0.25-0.5 oz 

Same as for 

benefin 

56 


Crabgrass, 


annua and certain 

other annual 

grasses; also 

henbit,pigweed, 

lambsquarter, 

shepherds purse. 

Various annual 

grasses, Poa and 

broadleaves (esp. 

crabgrass and 

goosegrass). 

Crabgrass, Poa, 

foxtail, crowfoot 

barnyardgrass, 

smutgrass, goose 

(weak) and many 

annual 

broadleaves. 

Remarks 

Restricted use. More soluble than Simazine. 

Safely applied to St. Augustine, centipede, 

zoysia, and dormant bermuda. Good winter 

weed control. Do not apply near dripline of 

trees and shrubs. 

Apply in late February to early March in south 

La. & early to mid March in north LA for many 

summer annual grasses and broadleaf 

weeds. Retreat in mid-September in north LA 

& early to mid-October in south LA for winter 

annuals. Do not seed treated areas within 

1.5-4 months of last application. Use on 

established turf only. Not for greens. Can 

thin overseeded grasses. 

On established turf, including ryegrass. Long 

residual. Use caution if winter kill of existing 

turf is suspected. 

Apply in February - early March in south LA & 

early to mid-March in north LA for many 

summer annual grasses & broadleaf weeds. 

Re-treat in mid Sept. in north LA & early Oct. 

in south LA for winter annuals. Do not seed 

treated area within 4 months of last 

application. Use on established turf only. 

Labeled for greens. Irrigate in or incorporate. 

Warm season grasses and fescue only. 

Apply 2-3 weeks before weeds emerge. Do 

not seed for 6 mos. Irrigate if no rain has 

fallen after a few days. Use enough water or 

applications to have good uniform coverage. 

May tank mix with compatibles. Delay overseeding 

or sprigging for 3 mos. after 

application. Provides postemergence control 

of pre-tillering crabgrass. Apply on 

established turf only. 

Many broadleaves. For established turf. Do not apply through 

irrigation. Keep in agitation. Can tank mix 

with other products. All established 

turfgrasses are tolerant.

Herbicide 


Rate lb ai/A 

Rate product/A 


Goosegrass/ 

Crabgrass Control 

6.56 G 

Kerb 50W 

Pendulum 60 DG 

LESCO PreM 

60DG 

LESCO PreM & 

Pendulum 3.3 EC 

Scotts Weedgrass 

Control 60 WP 

Pendulum 2G 

Pennant Magnum 

7.62 EC 

Prograss 1.5 F 

Ronstar Chipco 2 G 

Regal Ronstar 2 G 

Ronstar 50 WP 

Rubigan 50W 

Bensulide + 

oxadiazon 

6 + 1.5 lb ai 

116 lb 

pronamide 

pre 0.5-1 lb ai; 

post 0.75-1 lb ai 

1-2 lbs/A 

1.5-2 lbs/A 

pendimethalin 

1.7 – 3.0 lb ai 

60 DG = 2.5-5.0 lb/A 

60 WP = 2.5–5.0 lb/A 

3.3 EC = 3.6–4.8 pt/A 

2 G = 75–100 lb/A 

metolachlor 

1.2 – 2.6 lbs ai 

1.3 2.6 pt/A 

ethofumesate 

1.0-2.0 lbs ai 

1.0 – 2.0 gallons 

oxadiazon 

2.0-4.0 lb ai 

2 G = 100 to 150 lb/A 

50 WP = 4 to 6 lb/A 

fenarimol 

1.4 - 2.0 lb ai 

44 – 65 oz/A 

Rate of 

Formulated 

Material for 

1000 ft 2 



2.6 lb Crabgrass, 


annua 

pre 0.4-0.7 oz 

post 0.6-0.7 oz 

60 DG = 1 – 1.8 oz 

60 WP = 1 – 1.8 oz 

2 G = 1.7 – 3.4 lb 

3.3 EC = 1.3–1.8 

oz 

57 


Pre (up to 1-2 leaf 

stage) or post in 

fall or winter for 

control of Poa 

annua in 

bermudagrass. 

Also rye, goose, 

and many 

broadleaves. 

Goosegrass and 

crabgrass, foxtail, 

spurge, hop clover, 

henbit, oxalis, 

chickweed 

woodsorrel. 

0.48-0.96 oz Poa, goosegrass 

and crabgrass. 

Yellow nutsedge 

and some annual 

sedges. Pigweed. 

2-3 oz lt soil 

3.5-4 oz med-hvy 

soil 

2 G = 2.3 – 3.4 lb 

50 WP = 1.5 - 2.2 

oz 

1.5 oz and again 

in 10-14 days 


(Poa annua), 

pigweed, chickweed, 

purslane, 


crabgrass and 

foxtail. 

Suppresses 

nutsedge. 

Poa annua, 

crabgrass, 

goosegrass, Fla. 

pusley, oxalis, 

carpet-grass and 

many other annual 

grasses and 


Remarks 

Maybe applied on established zoysiagrass, 

perennial ryegrass, and bermudagrass 

including greens and tee boxes. 

Use on dormant or active bermudagrass. 

Bluegrass, ryegrass, fescues and bentgrass 

will be injured. Acts mainly through root 

absorption so beware of runoff onto sensitive 

grass. Activity can be checked with activated 

charcoal. Otherwise, do not use within 70 

days prior to overseeding. Postemerge 

activity is slow (1 to 2 months). Restricted 

use. 

For established warm season grasses. Not 

for spring use when turf suffers from severe 

winter kills. Do not use Pendulum 3.3 EC on 

greens. Irrigate into turf. 

For warm season turfs. Not for tees or 

greens. Do not overseed 4 months prior or 6 

months after. Also for ornamentals. May 

delay bermudagrass transition out of 

dormancy. Common is more susceptible than 

hybrid. Split applications (2 lb + 2 lb 6 wk 

after the initial treatment) can reduce this 

effect. 

Apply pre or early postemerge. Hastens or 

extends dormancy in bermuda. Therefore 

apply 3-4 wks after overseeding. Do not 

over-treat or overlap. Repeat once for 

extended control. Overseed only with 

perennial ryegrass. Maximum 8 pt/A/season. 

Use of activated sewage sludge reduces 

activity. Seasonal influences on bermuda 

recovery can be significant for Baton Rouge 

and southward. 

For use on established St. Augustine, Zoysia, 

Tall Fescue and Bermudagrass only. Do not 

exceed 150 lb/acre (3 lb active) on St. 

Augustine turf. May cause temporary 

discoloration. Do not apply to 

centipedegrass or bermudagrass golf 

greens. Can split applications 30 days apart. 

50WP for dormant turf. Apply 50 WP several 

weeks prior to greenup. Active ingredient 

also premixed with bensulide as Scotts 

Proturf 8470 

Poa annua Use as preemerge program for prior to 

overseeding. 2nd application 2 weeks prior to 

overseed. Acts by reducing Poa growth to 

allow overseed to dominate on Bermuda 

greens. Rubigan is an effective, locally 

systemic, broad spectrum fungicide for 

dollarspot and brown patch. Single, double or 

triple split application. (Single applicaton is 

weak).


Rate lb ai/A 

Herbicide 



Surflan 4 AS 

Oryzalin 

3.0 lbs ai 

3 Qt/A 

POSTEMERGENCE HERBICIDES - selective 

Acclaim 0.57 EC 

Asulox 3.3 EC 

Banvel 4S 

Basagran T/O 

Lescogran 

4 SL 

Fenoxaprop 

0.57 – 0.174 lb ai 

13 – 39 fl oz/A 

Asulam 

1.7-2.1 lb ai 

4-5 pts/A 

dicamba 

0.25 – 0.5 lb ai 

0.5 to 1 pt/A 

bentazon 

1.0 – 2.0 lb ai 

1-2 qt/A 

Certainty 75 WG sulfosulfuron 

0.05 - .09 lb ai 

Clarity 

1.25 – 2.0 oz/A 

dicamba 

diglycolamine 

salt formulation 

0.09-1lb 

3-32 oz/A 

Confront 3 SL triclopyr 

plus clopyralid 

0.28 – 0.56 lb ai 

0.09 – 0.19 lb ai 

1.5-2.0 pt/A 

Rate of 

Formulated 

Material for 

1000 ft 2 



2.2 oz Crabgrass, rye, 

goosegrass and 

barnyard grasses, 

foxtails and Poa 

annua as well as 

many broadleaves. 

0.75 – 1 fl oz Early postemerge 

to most annual 

grasses and 

bermudgrass 

suppression. 

1.5 - 1.8 oz Crabgrass, 

goosegrass, and 

sandbur. Poor on 

torpedograss. 

1 to 2 teaspoons Annual and 

biennial 

broadleaves, 

woody brush and 

vines. Chickweed, 

white clover, 

henbit, burweed, 

wild strawberry, 

curly dock, spotted 

spurge. 

0.75-1.5 oz Yellow nutsedge 

and annual 

sedges. Green 

kyllinga with repeat 

applications. 

Purslane and 

several other 

broadleaves. 

0.03 – 0.04 oz Yellow and purple 

nutsedge and 

green kyllinga plus 

johnsongrass 

0.07-0.74 oz Same as those 

controlled with 

Banvel 

0.5-0.75 oz 

Spot: 1 TBL / gal 

58 


Many annual and 

perennial 

broadleaves (like 

phenoxies). Black 

medic, white 

clover, chickweed, 

burweed, 

lespedeza, wild 

violet, Virginia 

buttonweed 

Remarks 

Use on established bermudagrass. Not for 

greens or tees. Delay reseeding 3-4 months. 

Contains orange marker dye. One application 

per season. See also benefin. 

Can be safely applied to zoysiagrass. 

Suppression of bermudagrass infesting 

zoysiagrass. 

Postemerge use in Tifway 419 bermuda and 

St. Augustine. Do not apply to residential 

turf. Do not apply to freshly mowed or 

stressed turf. Do not use surfactant. One 

application per season. Some discoloration 

may occur, especially in hot weather. 

Annual and biennial broadleaves, woody 

brush and vines.Use on deep-rooted, 

stubborn broadleaves. Apply sufficient 

gallons to coat foliage down to base of plant. 

Repeat application may be needed. Do not 

exceed ½ lb a.i. per acre per year. 

Applications over 0.25 lb. ai/A may 

temporarily stunt and discolor some grasses. 

May tank mix with 2,4-D, MCPP, MCPA or 

bromoxynil (consult label). . DO NOT APPLY 

WITHIN THE DRIPLINE OF DESIRABLE 

TREEES AND SHRUBS. 

Postemerge on active growth. Use on 

established turf. Can repeat at 10 to 14 days. 

Do not apply more than 3 qt/A/season. 

Minimum dilution of 1 gal/1,000 ft 2 or 40 

gals/A. Do not mow 3-5 days before or after 

application. Not for golf greens. May add 

crop oil concentrate. 

Good southern turf safety and very effective 

on most sedge species including green 

kyllinga. Additionally, herbicide controls 

johnsongrass. 

After green-up. To avoid injury to newly 

emerged grasses, wait until after the second 

mowing to apply. Applications of more than 

16 oz/A may discolor susceptible grasses. 

Consult label. Do not exceed 32 oz/A/yr. 

Postemerge on active weeds. Repeat if 

necessary. May be used on bermudagrass, 

centipedegrass, and zoysiagrass. St. 

Augustine and carpet not listed. Avoid drift 

and contact of shrubs. Not for golf greens or 

tees. A maximum 2 qts/A/yr. Do not apply 

to residential turf.

Herbicide 


Rate lb ai/A 


Rate of 

Formulated 

Material for 

1000 ft 2 

POSTEMERGENCE HERBICIDES – selective (continued) 

Drive 75 DF Quinclorac 

0.75 lb ai 

1 lb/A 

DSMA 

3.0-4.0 lbs 

Rate/A 

Various formulations – 

consult label 

0.5 gal/A 

Illoxan 3EC diclofop 

0.75-1.5 lb ai 

Image 70 DG 

Image 1.5LC 

Lontrel 3 EC 

MSMA 6 

MSMA 6.6 

Manage 75 WDG 

Sempra 

32 - 44 oz/A 

imazaquin 

0.38 - 0.5 lb ai 

70 DG = 8.6 – 11.4 

oz/A 

1.5 LC = 22-44 oz/A 

Clopyralid 

0.09 -0.5 lb ai 

0.25 to 0.5 oz/A 

MSMA 

2.0 – 3.0 lb ai 

6 SL = 1.3 - 2 qt/A 

6.6 SL = 1.2 – 1.8 

oz/A 

halosulfuron 

0.03-0.06 lb ai 

0.6 - 1.33 oz/A 



0.38 oz/A Crabgrass, 


clover, and 


torpedograss 

59 


Remarks 

For bermudagrass and zoysiagrass. Do not 

apply to centipede, St. Aug., or 

bahiagrass. Multiple applications needed for 

torpedograss. 

2.2 - 3 oz Crabgrass and Established bermuda and zoysia only. 

some broadleaves Postemerge in warm weather (70F or warmer 

including, burweed, night). Repeat in 10 days Two or three 

nutsedge. applications 7-10 days apart are usually 

needed. Temporary browning of permanent 

grass will disappear after a few days if 

moisture and fertility are adequate. Mow 

established lawns to 1.5 inch height before 

treatment. On new lawns, mow 3 to 4 times 

before treating. Best results obtained when 

growing conditions and soil moisture are 

good. Do not water for 24 hours after 

application. Apply in 25 to 40 GPA. Add 

surfactant if not contained in the formulation. 

Weak on goosegrass. Emerald zoysiagrass 

is susceptible to injury 

0.75 - 1.0 oz 

1.5 LC = 0.75-1.0 

oz 

70 DG = 0.2 – 0.26 

oz 

0.1 – 0.5 oz 

6 SL = 1.0 - 1.5 oz 

6.6 SL =1.0 - 1.3 

oz 

0.25 tsp/gal spot 

spray 

0.138 – 0.03 oz 

Goosegrass 

infesting 

bermudagrass on 

golf courses 

including greens 

Chickweed, henbit, 

clover, parsley 

piert, geranium, 

pigweed, onions, 

purple nutsedge, 

burweed, sandbur, 

kyllinga and dollarweed. 


including legumes 

and buttonweed 

Bahiagrass, 

crabgrass, 

dallisgrass, 

nutsedges 

Nutsedges 

(purple & yellow) 


kyllingas 

Postemerge control of goosegrass up to 1 

tiller. Apply on established bermudagrass. 

Do not tank-mix with fertilizers or other 

pesticides. Do not overseed treated area for 

at least 2 months following application. Avoid 

mowing treated areas for 36 hours. 

Restricted use. 

Postemerge on active growth; all warm 

season grasses. Turf may have compacted 

growth, with less seed. Do not tank mix with 

other postemergence herbicides. Not for cool 

season grasses or golf greens. Some 

yellowing may occur especially in tire tracks 

or low areas. Can repeat for longer control. 

Add a nonionic surfactant 0.25%. MSMA or 

DSMA will improve sedge control. 

Do not use on putting greens or tees. No 

surfactant is needed. Can provide effective 

control of Virginia buttonweed but repeated 

applications may be necessary. Avoid drift to 

susceptible ornamental plants. Do not apply 

to residential turf. 

Bermudagrass and zoysia are tolerant. 

MSMA tends to be 'hotter' than DSMA. 6 

lb/gallon formulation has surfactant but 6.6 

lb/gallon formulation does not. Best 

performance can be expected when air 

temperatures are at least 80 degrees. 

Repeat applications are required 7-10 days 

apart. Weak on goosegrass. Add Sencor for 

goosegrass control. Emerald zoysiagrass is 

susceptible to injury. 

Postemerge with repeat application in 2 

months. Use ½% surfactant. Can be used 

on all warm season grasses.

Herbicide 


Rate lb ai/A 


Rate of 

Formulated 

Material for 

1000 ft 2 


Mecoprop 

Various 

formulations 

mecoprop 

1.0-2.0 lb ai 

Monument 75 WG trifloxysulfuron 

0.015 - 0.02 lb ai 

MSMA 6 

MSMA 6.6 

Manor 60 WDG 

Blade 60 WDG 

0.33 – 0.56 oz/A 

MSMA 

2.0 – 3.0 lb ai 

6 SL = 1.3 - 2 qt/A 

6.6 SL = 1.2 – 1.8 

oz/A 

metsulfuron 

0.01 – 0.038 lb ai 

0.33 – 1 oz/A 

Revolver 0.19 SL foramsulfuron 

0.013 – 0.4 lb ai 

Sencor 75 DF 

Trimec Classic 2.7 

EC 

Trimec Southern 3 

EC 

8.8 – 26.2 fl oz/A 

metribuzin 

0.2-0.5 lb ai 

5.3-10.5 oz/A 

2,4-D + MCPP + 

dicamba 

0.68 – 1.35 lb ai 

2 – 4 pt/A for Bermuda 

(consult label for other 

turf) 

2,4-D + MCPP + 

dicamba 

(lb ai varies for turf 

species) 

1 – 2 pt/A 

(consult label for 

specific turf) 

Various 

formulations 



60 


Prostrate 

broadleaves, 

clover, plantation, 

knotweed etc. 

(some activity on 

dichondra) 

Remarks 

Do not mow 2 - 3 days before or after 

application. Do not apply within 24 hours of 

rain or irrigation. Moist or warm conditions 

enhance activity. For golf greens use lower 

for at least 1 month. Not for St. Augustine. 

Apply with thorough coverage. 

0.007 – 0.011 oz Purple, yellow and Bermudagrass and zoysiagrass only. 

annual sedges plus Excellent sedge and green kyllinga control. 

green kyllinga, Suppresses Virginia buttonweed. Repeat 

oxalis, clover, applications may be needed 4 wks after initial 

spotted spurge, application. Use rates 0.1 to 0.3 oz/A for 

Poa, ryegrass overseed removal. Allow 6 wks between last 

overseed, Virginia 

buttonweed 

application and overseeding with ryegrasses. 

6 SL = 1.0 - 1.5 oz 

6.6 SL =1.0 - 1.3 

oz 

Bahiagrass, 

crabgrass, 

dallisgrass, 

nutsedges 

0.012 – 0.02 oz Pensacola 

Bahiagrass, 

clovers, rose (pink) 

woodsorrel, many 

winter 

broadleaves, 

suppresses V. 

buttonweed. 

0.20 – 0.60 oz/A Goosegrass, 


removal of winter 

overseed 

0.12-0.24 oz Chickweed, henbit, 

spurweed, 

speedwell. 

0.75 – 1.5 oz for 

hybrid Bermuda 

1 oz/1500 ft 2 for St. 

Augustinegrass or 

centipedegrass 

0.37 – 1.1 oz 

(consult label for 

specific turf) 

Virginia 

buttonweed, 

Henbit, lespedeza, 

clovers, dandelion, 

dock, burweed, bull 

thistle, wild 

strawberry and 

many other 

broadleaves 

Bermudagrass and zoysia are tolerant. 

MSMA tends to be 'hotter' than DSMA. 6 

lb/gallon formulation has surfactant but 6.6 

lb/gallon formulation does not. Best 

performance can be expected when air 

temperatures are at least 80 degrees. 

Repeat applications are required 7-10 days 

apart. Add Sencor for goosegrass control. 

Controls a wide range of broadleaf weeds. 

Labeled for St. Aug., bermuda, zoysia, 

centipedegrass. Do not exceed 0.5 oz/A on 

centipedegrass. Do not overseed for 8 weeks 


Bermudagrass and Meyer zoysiagrass only. 

Maybe applied to greens. Apply higher rates 

for goosegrass control. Not labeled for 

residential turf. Rainfast within 2 hours 

Postemerge on dormant turf (use higher 

rates). Active turf (mid spring) Bermuda only. 

Use on active turf should not be during stress. 

For sod and golf fairways in com. bermuda 

turf. Use 40 gal/A or 1 gal/1,000 sq. ft. Not for 

golf greens, tees or aprons. Delay mowing 

for at least 3 days prior to spray. Do not 

exceed 1.5 lbs. ai/A/season or more than 1 

application on dormant or 2 applications on 

active turf. Can tank-mix with MSMA using 

0.1-0.2 lb/A. 

Consult label for specific turf rates. Provides 

good control of many broadleaf weeds. Avoid 

non-target drift. For clover, 4 pints/A is 

recommended. Maximum of 2 applications 

per year. Do not apply when temperatures 

exceed 85 F. 

Henbit, lespedeza, May be applied to most southern turf. 

clovers, dandelion, However, use rates vary for particular grass 

dock, burweed, bull species. Contains less 2,4-D than Trimec 

thistle, wild Classic. Do not apply when temperatures 

strawberry and exceed 85 F. 

many other 

broadleaves.

Herbicide 


Rate lb ai/A 


Rate of 

Formulated 

Material for 

1000 ft 2 


2,4-D amine 

3.84 EC 

and phenoxy 

blends 

Vantage 1 EC 

Weedone DPC 

Amine 

See also general 

lawn 

broadleaf control 

2,4-D amine 

0.75 - 1 lb ai 

Various formulations. 

(see label(s) 

1.5 – 2.0 pt/A 

Sethoxydim 

0.28 ai 

2.25 pt/A 

2,4 DP & 2,4D 

0.9 - 1.4 lb ai 

2-3 qt/A 

POSTEMERGENCE - non-selective 

Phytar 560 2.48 EC cacodylic acid 

8 lb ai 

Basamid 99 G Dazomet 

346.5 lb ai 

Reward 2 SL & 

various other 

formulations 

350 lb/A 

0.25 - 0.5 lb ai 

1 – 2 pt/A 

1.0 oz (2 Tbl) 2 

gals water 



61 


Remarks 

Many annual, After broadleaf weeds emerge and are 

biennial and actively growing. Treat sensitive grasses only 

perennial broadleaf in mid spring. Apply on sunny days when the 

weeds. 

temperature is well above 60F and there is no 

wind. Plants actively growing are much 

easier to kill. Prevent contact with desirable 

adjacent plants. Spot spray when infestations 

are not severe. If phenoxy herbicides are 

applied to St. Augustine and Centipede, use 

several applications of amine at half rates. 

Injury may still occur, especially in hot 

weather. Use only on established turf. Do 

not treat grasses while breaking dormancy. 

More than one application may be required 

for most weeds. Add 1.5 oz. (3 Tbs.) of 

surfactant per 3 gals. water if not present for 

better control of slick-leaf weeds. Use ester 

formulation for hard to kill weeds but expect 

more turf damage & drift. Do not use 2,4-D 

near greenhouses. Some incompatibility 

possible when mixed with MSMA. Restricted 

use. Observe regionalized rules 

concerning 2,4-D use in cotton producing 

areas of the state. 

0.83 fl oz Crabgrass, bahia, 

goose, panicums 

and other grasses. 

Will not control 

carpetgrass or 

torpedograss Poor 

on Poa annua. 

1.1 to 2.2 oz Most broadleaves. 

Re-treat tolerant 

weeds when 

growth resumes. 

Also for perennial 

vines. 

12 TBL in 3 gal 

water for 816 ft 2 

Most annual 

vegetation 

contacted 

Postemerge on active spring grassy weeds in 

centipede. May be used on seedling (delay 

application until 3 in. of new stolon growth) 

and established centipedegrass. Apply at 1.5 

pt/A rate for seedling centipedegrass. Ensure 

good coverage of target foliage. Use during 

good growing conditions. If centipede is cold 

stressed, delay application until 3 weeks after 

green up. Maximum of 2 applications/year on 

established centipede. Will not control 

torpedograss. For bahiagrass suppression, 

reapply 10 to 14 days after first application. 

Check product labels for rates, precautions 

and other use suggestions. Postemerge 

when weeds are actively growing. Do not use 

at least 4 weeks prior to overseed. Spring 

use on fall seeded turf. Avoid treatment on 

stressed turf and above 90F. St. 

Augustinegrass, centipede, carpet or 

bentgrasses may be injured at the full low 

rate, therefore split the low rate. 

REFER TO LABEL FOR COMPLETE 

INSTRUCTIONS. A non-selective contact 

herbicide to control top growth of weeds. 

Same as paraquat activity. One TBL 

surfactant/3 gal water is usually beneficial. 

8 lb Follow label carefully. Apply prior to planting. 

Fall for early spring planting. Soil fumigant 

used 2-4 weeks ahead of planting depending 

on soil temperature. Toxic to fish. 

0.4 – 4.4 fl oz Most annual weeds Use on dormant bermuda and for edging. 

Top burn kill; same as paraquat. Presently a 

24C label. Add a nonionic surfactant, if 

advised. Not effective on perennial weeds.

Herbicide 


Rate lb ai/A 


POSTEMERGENCE - non-selective (continued) 

Finale 1 SL glufosinate – 

ammonium 

0.75 – 1.5 lb ai 

Roundup Pro 4 SL 

and other 

glyphosates 

3 - 6 qt/A 

Glyphosate 

1.0-5.0 lb ai 

annuals: 1 - 1.5 qt/A 

perennials & turf 

renovation: 2.5 - 5 

qt/A 

Rate of 

Formulated 

Material for 

1000 ft 2 

spot treatment 1.5- 

4.0 oz/gal 

0.75 – 3 oz 

1 - 2% solution for 

spot treatments 



62 


Remarks 

Most weeds Nonselective burndown like paraquat. Locally 

systemic. Many tankmix combinations. Use 

20-40 g/A for sufficient coverage. 

Most grasses and 

herbaceous 

broadleaves 

This nonselective herbicide is systemic. 

Spray foliage only to wet. Leaves should 

have no heavy dust cover. Use when no rain 

expected for at least 6 hours. Plants should 

not be stressed. Use when target vegetation 

is actively growing. For turf renovation, wait 

7-10 days before cultivating. Not for use on 

dormant St. Augustine, Centipede or 

Carpetgrass. 

GENERAL HOME LAWN WEED CONTROL 

Home lawn broadleaf weed control can often be accomplished using selective postemerge 

formulations that contain two or more herbicides. Formulations are available for most southern 

grasses. Examples are: Bayer Advanced Southern Weed Killer, ACE Lawn Weed Killer, GreenLight's 

Wipe Out, Super KGro Broadleaf Weed Killer, Spectrum 33 Plus, Trimec, Ferti-lome's Weed Out, 

Ortho Weed-B-Gon for Southern Lawns II, Atrazine Purge, Hi-Yield Atrazine and Ortho Atrazine 

PLUS. Most labels will stress their use on younger weeds growing in the cooler mid-spring to early 

summer period. A temporary discoloration of the lawn usually occurs. Repeat application in 3-4 

weeks if needed on persistent weeds. WARNING: Some of these products contain phenoxy 

herbicides; avoid drift, keep away from gardens and clean sprayers thoroughly with ammonia. 

Atrazine-containing products enter through roots and leaves and work slower. 

Many manufacturers now offer herbicides impregnated on fertilizer for homeowner use. Many of 

these products work sufficiently. These products,however, have to be applied according to their 

intended use. Those products containing a preemergence herbicide (see above table) have to be 

applied before the weed emerges. For crabgrass, application is typically early March in northern 

areas of Louisiana, and mid-to late February in the southern portion of the state. A good rule of thumb 

is that Forsythia plants begin to bloom just prior to crabgrass emergence. If sufficient rainfall is not 

received, irrigation should be applied to activate the herbicide. Be sure to read and follow the 

manufacturer’s label for maximum weed control and application instructions. Use a good quality 

spreader, and make every effort to apply the product uniformly to the lawn. A good practice to ensure 

uniform application is to apply one-half of the desired amount in one direction across the lawn, and the 

second half of the desired amount perpendicular to the first application. 

The best defense against weeds in a home lawn is to have a dense, healthy turf canopy. Be certain 

to remove no more than one third of the height of the turf in a single mowing. Removing excess turf 

tends to leave holes in the canopy that weeds will often invade. Follow a recommended fertility 

regimen for your specific turf species and location. Overfertilization also can cause detrimental effects 

to the turf and leave voids in which weeds can establish.

TOLERANCE OF TURFGRASSES TO COMMONLY USED TURF HERBICIDES 

Herbicide 

Bahiagrass 

Bermudagrass 

Carpetgrass 

Centipedegrass 

63 


atrazine - M-D - T - - T M 

benefin T T - T T T T T 

bensulide T T - T T T T T 

DCPA T T T T T T T T 

napropamide T T - T T - T - 

oxadiazon - T M-S M-S M T M T 

pronamide - T - - S S - - 

simazine - M - T - - T T 

oryzalin T T T T - - T T 

asulam - M-S S S S S M-T S 

bentazon T T - T T T T T 

bromoxynil - T - M-S T T T T 

dicamba T T - M-S T-M - M-S T 

endothall - M - - - S M M 

mecoprop T T - M-S T - M-S T 

metribuzin - T - - - - - - 

MSMA/DSMA S T S S M -- S T 

sethoxydim S S M-S T M S S S 

2,4-D T T M-S M-S M - M-S T 

cacodylic acid D D D D S S S D 

dalapon S S S S S S S S 

glyphosate D D D D S S S D 

paraquat D D D D S S D D 

T= tolerant 

M=moderately tolerant; use with care; may require lower rates. 

S=susceptible; may cause severe injury or death. 

D=dormant turf only; may kill actively growing turf; be sure that turf is completely dormant. 

- = not labeled for that use, or data are limited. 

NOTE: Always read herbicide labels for specific warnings, rates, timings, tank mixes, etc. The label is the 

legal application document. 

Fescue 

Perennial ryegrass 

St. Augustinegrass 

Zoysiagrass

64 


NONCROPLAND - PERENNIAL AND ANNUAL BROADLEAF AND GRASS WEEDS 


Material Time to Apply Weeds Controlled Remarks 

BAREGROUND HERBICIDES 

CBPM (Pramitol 5PS) 

1 - 2 lbs/l00 sq ft 

Hyvar X 80% WP 

10 - 25 lb/A 

in 150 -200 gal water 

Karmex 80% DF 

20 - 60 lb/A 


Pramitol 25E 

10 - 20 gal/A in l00 gal 

water per acre 

Sahara DG 

13 - 19 lb/A in 

20 - 100 gal water 

Sodium chlorate 

650 - 870 lb/A or 

1.5 - 2 lb/l00 sq ft 

(Atlacide) 

Anytime to vegetation 

or soil 

Same as above Broadcast pellets uniformly. 

Spring and summer Same as above If vegetation is present, addition of a surfactant 

has improved weed control. Do not use on 

irrigation ditches or near desirable trees. 

Before weed growth 

begins 

Prior to or up to 3 

months after weed 

emergence 

Preemergence 

or early 

postemergence 

Apply to plants 

actively growing and 

before seed 

formation. 

Woody plants Use lower rates on lighter soils. 

Same as above For faster top-kill of existing vegetation, use 

diesel oil in place of water for a carrier. 


perennial weeds 

johnsongrass,bermudagrass 

and most annual and seedling 

plants. 

Always use a nonionic surfactant or crop oil 

concentrate for postemergence applications. 

Easily combustible after drying on clothes and 

plants. Less flammable when mixed with calcium 

chloride or borates. 

Numerous other herbicide combinations containing borates, chlorates and/or residual compounds are available. Failure to list these 

in this publication does not indicate that they are ineffective as soil sterilants. 

ABATEMENT - NOT BARE GROUND 

Arsenal 

2.0 - 6.0 pt/A 

Garlon 4 

1.0 - 2.0 pt/A 


Journey 

10.7 - 16.4 oz/A 

+ 0.5% surfactant in 10 

- 20 gal. water/A. 

Karmex 80DF 

5 - 10 lb/A 

in 100 - 150 gal 

water/A 

Karmex 80 DF 

3.0 lb/A 

+ MSMA 

3.0 lb/A 

OR 

Hyvar X 80WP 

1.5 lb/A 

+ MSMA 

3.0 lb/A 

Oust XP 

3 - 12 oz/A 

Outrider 

1.3 oz/A 

+ 0.5% surfactant 

Overdrive 

4.0 -8.0 oz/A 

in 10 – 20 gal. water 

Postemergence to 

weeds 

Annual and perennial grasses 

and broadleaf weeds. Some 

brush control. 

Spring and summer Many broadleaf weeds and some 

brush species. 

Spring and summer Johnsongrass, vaseygrass, and 

certain broadleaf weeds. 

Apply in late winter 

or early spring 

In the spring after 

grasses and 

broadleaf weeds are 

growing. Apply 50 

gal/A spray 

Preemergence or 

early postemergence 

Early 

postemergence 

Johnsongrass, other grasses 

and most annual and perennial 


Johnsongrass, dallisgrass and 

most annual grasses and 


Annual and perennial broadleaf 


Good residual activity. For noncropland only. 

Good brush control. Weak on some broadleaf 

weeds. Recommended for use in 2,4-D restricted 

parishes and areas. 

Use at higher rate in spring for bermudagrass 

release on noncrop areas where bahiagrass is 

not desirable. Lower rate may or may not control 

bahiagrass. Use in combination with mowing for 

best results. 

Can be applied to fence rows including pasture 

fences for season-long weed control. 

Hyvar more effective on heavy or clay soil. Apply 

as a spray to remove grasses and weeds when a 

Bermudagrass sod is desired. Dry ditches, turn 

rows and fences except around pastures. Do not 

apply products containing arsenic along pasture 

fences. Add 0.50% nonionic surfactant. 

May be used at up to 10 oz/A for bermudagrass 

“release” in noncrop areas. Avoid runoff onto 

crop land. Specific labels exist for the tank-mix of 

Roundup plus Oust XP for bermudagrass release. 

johnsongrass For bermudagrass and bahiagrass release on 

roadsides and other non crop areas. 

Spring and summer Many broadleaf weeds.


Material Time to Apply Weeds Controlled Remarks 

ABATEMENT -NOT BARE GROUND (continued) 

Plateau 

7 - 10 oz/A 


Roundup Ultra/Pro OR 

other glyphosate 

formulations (4 lb/gal) 

1 - 5 qt/A 

Early postemerence Johnsongrass, vaseygrass & 

certain broadleaf weeds. 

Apply to actively 

growing weeds 



65 


For bermudagrass release on roadsides and 

other noncrop areas. Tolerant to bermudagrass. 

Use 1-1.5 pt/A for bermudagrass release. High 

rates give non-selective control. 

Roundup Pro and Oust XP are currently registered to be tank-mixed at 1.0 pt plus 1.0 oz. Oust XP/A for bermudagrass release in 

noncropland areas. 

Spike 80WP 

5 - 20 lb/A in 

100 - 200 gal water 

Ureabor 

1 - 3 lb/100 sq ft. 

Apply in winter and 

early spring 




grasses and woody plants 


weeds 

Use high rates for perennial grasses and woody 

plants. Not cleared for fence rows along fields. 

Noncrop areas only. Can be applied dry or 

dissolved in water to spray. 

VEGETATION CONTROL UNDER ASPHALT PAVEMENT - CAUTION: Vegetation such as trees and shrubs may be 

damaged or even killed if their roots grow into the herbicide-treated soil. 

Borascu 

4840 lb/A 

CBM (Sodium chlorate 

+ sodium metaborate) 

240 gal/A 

Hyvar XL 

12 gal/A OR 

Hyvar X 

30 lb/A 

Pramitol 25E 

25 gal/A 

OR 

Pramitol 80 WP 

60 lb/A 

Treflan 

3.0 - 4.0 gal/A 

Spike 80W 

5.0 - 20.0 lb/A 

Apply just ahead of 

prime coat 

Apply just ahead of 

prime coat in 200 gal 

of water/A 

After shaping and 

prior to compacting 

WEEDS IN EXISTING ASPHALT PAVEMENTS 

Roundup Ultra, 

Roundup Pro, others 

(4 lb/gal) 5 qt/A 

All weeds controlled Apply dry. Incorporate to 4" depth. Thorough 

incorporation is needed for proper bonding of 

asphalt to base. 

All weeds controlled Weeds from adjacent areas may grow under 

edge of pavement. 

All grasses, sedges and 


After spraying incorporate into the top 6 inches of 

material with rotary equipment. 

Same as above Same as above Same as above. Do not apply Pramitol under 

asphalt coating less than 3 inches 

Same as above Grasses and some broadleaf 

weeds 

Use sufficient water to ensure thorough wetting of 

the soil. 

Same as above Broadleaf weeds and grasses Rate depends on weeds to be controlled. See 

label. 

Apply in 10 - 40 gal 

of water 

Same as above Annual weeds 2 oz per gallon water per l000 sq 

ft. Bermudagrass, nutsedge, other perennial 

weeds (3 oz per gallon water per l000 sq ft.) 

Other treatments listed for soil sterilization can also be used to treat the soil under pavement. Hyvar is more effective in controlling 

nutsedge than many of the other herbicides listed. All of the soil sterilization treatments, except TCA, may injure vegetation some 

distance from the edge of the pavement. Hyvar, Karmex, AAtrex, Pramitol may injure trees adjacent to the treated area. 

FOLIAGE TREATMENTS NONSELECTIVE - GRASSES AND BROADLEAF WEEDS 

Arsenal 

2.0 - 6.0 pt/A 

30 - 50 gal water/A Annual and perennial grasses 

and weeds. Some brush 

species. 

20 gal water/A Annual and perennial grasses 


Good residual activity. 

Finale 

3.0 - 6.0 qt/A 

No residual activity. Fast acting. 

Herbicidal Naphtha 50 - 100 gal/A Annual grasses and broadleaf Regrowth will occur from roots and other annual 

weeds and topkill of perennial 

weeds. 

weeds will probably appear. Repeat as needed. 

Roundup Ultra/Pro Apply in 10 - 40 gal Annual and perennial weeds Apply 1% solution to annual weeds and 

others (4 lb/gal) of water per acre. 

johnsongrass (1 1/4 oz Roundup/gal). Apply 2% 

2 - 5 qt/A 

solution to bermudagrass and nutsedge 

(2 1/2 - 3 oz Roundup/gal).

Rate of 

Formulated 


Acre Broadcast 

POSTEMERGENCE 

Oats, Wheat, Barley and Rye 

Rate/Acre 


2,4-D amine 2,4-D amine 

1.0 pt - 1.0 qt in 10- 0.5-1.0 lb 

20 gal water for 

ground machine 

and 5 - 10 gal for 

aerial applications. 

2,4-D amine 

1.0 qt 

Banvel 

0.25 pt 

+ 2,4-D amine 

1.0 - 2.0 pt 

Wheat and Barley only 

Harmony Extra 

0.3 - 0.6 oz 

Hoelon 

2.0 - 3.33 pt 

Glean 

0.17 - 0.033 oz 

Sencor 75DF 

3.0 oz 

Wheat only 

Osprey 

4.75 oz 

2,4-D amine 

1.0 lb 

dicamba 

+ 2,4-D amine 

0.16 lb 

+ 0.50 - 1.0 lb 

thifensulfuron 

+ tribenuron 

0.23 - 0.46 oz 

diclofop 

0.80 - 1.5 lb 

chlorsulfuron 

0.13 - 0.38 oz 

metribuzin 

0.14 lb 

mesosulfuron-methyl 

0.013 lb 

OATS, WHEAT, BARLEY & RYE 

Time To Apply 



After grain is fully Dock, plantain, 

tillered (4-7") but mustard and other 

before it has begun broadleaf weeds. 

to joint. Choose Also winter peas 

warm sunny days and vetch 

for making 

application 

After plant is fully Wild onion or 

tillered (4-7") but wild garlic 

before it has begun 

to joint 

After grain is fully Wild onion or 

tillered (4-7") but wild garlic 

before it has begun 

to joint 

After 2-leaf stage, 

but before 3 rd 

node. 

Before flag leaf is 

visible. 

When ryegrass is 

in the 1 to 4-leaf 

stage 

66 


Wild garlic and 

many broadleaf 

weeds 

Fall or early spring. Most annual 

Wheat from 2-3 grasses and 

leaves until booting broadleaf weeds 

and weeds 2" tall 

Two-tiller stage of 

wheat 

When ryegrass is 

in the 1-leaf to 2tiller 

stage 

Remarks 

Do not apply before tillering, during booting, 

or early heading stages. LVE formulation 

more compatible with nitrogen solution 

fertilizer. Do not graze or feed forage from 

treated fields within two weeks after 

treatment. 

This rate of 2,4-D will not completely control 

wild onion or garlic but will prevent these 

weeds from forming aerial bulblets. Use care 

not to exceed these rates or severe injury 

may occur. 

This mixture may be more effective on onion 

and garlic than 2,4-D alone, especially under 

lower temperature conditions. Some crop 

injury may result. 

Rotational crops can be planted 60 days after 

application. Use ¼ to ½% nonionic 

surfactant. Do not use with nitrogen. 

Annual ryegrass Use only in wheat. Apply 2.0-2.66 pts/A to 

ryegrass from emergence to the 2-tiller stage. 

Use 2.66-3.33 pt/A for ryegrass in the 3 to 4leaf 

stage. Do not use on larger ryegrass. 

Do not mix Hoelon with any other herbicide. 

Annual bluegrass, 

henbit and 

chickweed 

Annual ryegrass, 



weed control 

Can only be used where no summer crop is to 

be grown following wheat. Use only on 

wheat. Extremely long rotation restriction for 

crops grown in Louisiana. 

Injury may occur when applications are made 

to waterlogged soils. Some varieties may be 

sensitive to Sencor. Refer to label for varietal 

tolerance. 

Use only in wheat. Can be applied from 

wheat emergence to jointing. Best results are 

obtained if applications are delayed to control 

numerous flushes of ryegrass. Use a 

methylated seed oil at 1.5 pt/A in 10 gallons 

of water. Some transient leaf burn may occur 

if applied with nitrogen fertilizers. Can be 

tank-mixed with some broadleaf herbicides, 

insecticides, and fungicides. Consult label for 

approved pesticides. Osprey rotation 

restrictions: 90 days-cotton, soybeans, rice, 

peanuts; 12 months-corn, 10 months-all other 

crops.

Rate/Acre of 

Formulated 

Product 

PREEMERGENCE 

Balan 1.5 lbs/gal 



Active 

Ingredient 

benefin 

1.1 - 1.5 lb/A 

Time To Apply 

Preplant 

incorporated 

PEANUTS 


Most annual grasses, 

weak on most large 

seeded broadleaf 

weeds 

67 


Remarks 

Incorporate into the upper 3" of soil 

immediately after application 3 weeks before or 

immediately before planting. 

A combination of Balan and Vernam at the recommended rate of each when applied alone can be applied to control more types of 

weeds than when either is applied alone. This combination should be preplant incorporated into the upper two to three inches of 

soil 3 weeks before to immediately before planting. 

Dual Magnum 

1 to 1.33 

Lasso 4 lbs/gal 



Prowl 3.3 EC 

1.8 - 2.4 pt/A 

Valor 

up to 3 oz/A 

Vernam 6E 

3.5 pt-lt and med 

soil 

s-metolachlor 

0.95 - 1.27 lb/A 

alachlor 

2.0-3.0 lb/A 

pendimethalin 

0.74 to 0.99 lb/A 

flumioxazin 

0.096lb/A 

vernolate 

2.5 lb/A 

POSTEMERGENCE - overtop 

Basagran 

1.5-2.0 pts 

Butoxone or 

Butyrac 

1.0-1.5 pts 

Poast 

1.0-2.0 pt/A 

+2 pt/A COC 

OR 

Poast Plus 

1.5 -2.25 pt/A 

+ 2 pt/A COC. 

Select 2EC 

6 – 16 oz/A 

+ 1% COC 

Ultra Blazer 

1.5-2.0 pts 

bentazon 

0.75-1.0 lb/A 

2,4-DB 

0.2-0.3 lb/A 

sethoxydim 

0.19-0.38 lb/A 

+ 2 pt crop 

oil/A 

clethodim 

0.09 – 0.25 lb/A 

acifluorfen 

0.37-0.50 lb/A 

At planting Annual grasses, 

pigweeds, fair 

control of teaweed. 

Poor control of largeseeded 

broadleaf 

weeds 

At planting Most annual grasses 

pigweeds, fair control of 

teaweed and poor 

control of large seeded 


Preplant 

incorporated 

Preplant, 

Premergence 

Preplant 

incorporated 

Overtop to small 

weeds 


small and actively 

growing 


exceed height 

limit 


exceed height 

limit 

Overtop to small 

weeds 


small-seeded 

broadleaves 

Pigweeds, sida and 

other broadleaf weeds. 

Some grass 

suppression. 

Most annual weeds and 

nutsedge. Fair control 

of signalgrass. Best 

material for nutsedge 

Cocklebur, prickly sida, 

common ragweed, 

smartweed 

Cocklebur, 

morningglory and fair 

control of 

other broadleaf weeds 

Annual and 



grasses. 

Pigweed, morningglory, 

wild poinsettia, 

and sesbania 

Apply to the soil surface after planting and 

before weeds emerge. May be tank-mixed 

with other PRE herbicides. Consult label. 

Apply to the soil surface after planting and 

before weeds emerge. 

Apply up to 60 days prior to planting and 

incorporate within 7 days. May be tank-mixed 

with other herbicides. Consult label 

Apply within two days of planting. Do not apply 

if peanuts have begun to crack. 

Incorporate into upper 2 to 3" of soil with power 

tiller or disk immediately after application and 

before planting. Subsurface injection improves 

crop tolerance and weed control. 

Do not apply to peanuts under stressed 

conditions. See label or detail. 

Low rates control cocklebur, highest rate for 

other weeds. See label for restrictions. 

Do not apply to grasses under stress. Do not 

apply within 70 days of harvest. 

Do not apply within 40 days of harvest. Other 

clethodim formulations have similar labeling. 

Do not apply Ultra Blazer within 75 days of 

harvest. Add surfactant as indicated on the 

label.

Effectiveness of selected rice herbicides 

Herbicide 

palmleaf 

morningglory 

eclipta 

barnyardgrass 

red rice 

sprangletop 

signalgrass 

RICE 

68 

fall panicum 


PREPLANT BURNDOWN 

2,4-D 9 9 0 0 0 0 0 5 8 8 9 9 9 8 5 7 9 

glyphosate 7 8 9 7 9 9 9 7 7 7 9 7 7 7 6 6 9 

Gramoxone Extra 8 9 9 8 9 9 9 5 3 6 7 9 9 7 8 4 7 9 

Grandstand 9 8 0 0 0 0 0 5 9 7 9 9 8 8 - 7 9 

PREEMERGENCE 

Bolero PPS 4 0 8 8 8 7 - 5 4 7 3 0 6 4 - 7 5 

Bolero (Delayed) 5 8 8 0 8 5 - 5 4 8 8 6 8 5 5 8 6 

Clearpath 8 8 9 8 8 9 5 9 6 8 8 7 6 7 6 7 8 

Command 0 0 9 0 8 8 7 0 0 7 0 0 - 0 - 7 0 

Facet (Drill seeded) 8 8 9 0 0 9 5 2 4 3 4 7 6 7 0 5 4 

NewPath (PRE or PPI) 8 7 8 8 8 9 5 9 6 8 8 4 6 4 6 7 8 

Ordram (PPI) 4 2 8 8 1 5 7 6 4 0 0 0 2 2 0 5 3 0 

Prowl/Pendimax (Delayed) 0 0 8 0 8 8 7 0 0 0 0 0 0 0 0 0 0 

Prowl/Pendimax 

+ Facet (Delayed) 

sedge 

alligatorweed 

8 8 9 0 8 9 9 4 6 3 3 8 4 7 0 3 6 

POSTEMERGENCE 

2,4-D Amine 9 9 0 0 0 0 0 2 3 8 9 9 9 9 5 6 8 9 

Aim 4 8 6 0 0 0 0 0 5 5 4 6 9 - 9 - 5 - 

Aim+Grandstand 9 8 0 0 0 0 0 5 8 6 9 9 8 9 - 6 9 

Arrosolo 6 9 9 0 8 2 9 8 2 5 3 5 8 2 7 2 9 9 9 2 6 2 8 2 8 

Basagran 8 8 0 0 0 0 0 8 4 8 9 4 8 3 7 2 9 2 

Beyond 8 6 8 9 7 9 7 8 3 2 8 3 6 3 5 6 7 

Bolero+Propanil 5 9 9 0 9 9 - 7 5 7 2 7 2 9 9 8 2 6 2 8 2 8 

Clearpath 8 9 9 8 6 9 6 7 6 3 3 8 6 8 6 6 7 

Clincher 0 0 9 0 9 9 8 0 0 0 0 0 0 0 0 0 0 

Facet 8 9 9 0 0 9 5 2 4 6 3 3 8 3 8 0 3 6 

Facet+Propanil 8 9 9 0 7 2 9 8 2 5 3 6 7 2 7 2 9 8 9 2 6 2 7 2 8 

Grandstand 9 8 0 0 0 0 0 5 8 6 9 9 8 8 - 6 9 

Grasp 3 7 9 0 3 3 3 8 7 8 8 9 7 7 8 7 6 

HiDep 2,4-D 9 9 0 0 0 0 0 2 3 8 9 9 9 9 5 6 8 9 

Londax 5 8 0 0 0 0 0 8 7 9 9 6 9 6 6 8 8 

Newpath (PRE+POST) 8 6 8 8 6 9 4 8 3 2 8 3 6 3 4 6 7 

Ordram 0 5 9 0 5 7 - 5 0 0 0 2 2 0 4 6 2 

Propanil 5 8 9 0 7 2 9 8 2 4 3 5 6 2 7 2 7 8 8 2 6 2 6 2 6 

Propanil+Aim 9 8 9 0 7 9 8 2 6 5 6 7 9 8 9 8 2 6 6 

Propanil+Londax 9 9 9 0 7 2 9 8 2 9 7 7 9 9 8 9 2 8 8 2 9 

Pendimethalin+Facet 8 8 9 0 8 9 5 2 4 6 3 2 8 4 7 0 3 6 

Pendimethalin+Propanil 5 9 9 0 9 9 8 2 5 5 7 9 9 8 2 8 2 6 2 7 6 

Permit - - 0 0 0 0 0 9 4 5 - 9 - 9 - 8 - 

Permit+Londax 5 8 0 0 0 0 0 9 7 9 9 9 9 9 - 8 8 

Regiment 8 6 9 0 3 3 0 7 3 7 8 2 8 8 7 8 7 7 8 4 

Ricestar HT 0 0 9 0 9 9 6 0 0 0 0 0 0 0 0 0 0 

Ultra Blazer 5 4 0 0 0 0 0 0 4 3 9 9 0 0 0 0 5 

1 With proper water management, 2 Controlled only when small (less than 2 leaf), 3 Annual sedge suppression, 4 Weeds must be < 4 

inches tall 

ducksalad 

redstem 

hemp sesbania 

waterhyssop 

jointvetch 

smartweed 

dayflower 

texasweed



Broadcast 

PREPLANT BURNDOWN 

2,4-D 

1.0-2.0 pt of 4 lb/gal 

material 


2-3 pt. Add 16-32 oz 

surfactant per 

100 gal. 

Grandstand 

1.0 pt/A 

Roundup Ultra, others 

1.0-4.0 pt 

Roundup WeatherMax 

22 oz/A 

PREPLANT INCORPORATED 

Ordram 15G 

20-25 lb of granular 

material or 

Ordram 8E 

3.0-4.0 pt 

Ordram 15G 

20-25 lb/A 

PREPLANT 

Bolero 

4 pt/A 

Bolero 10G 

40 lbs/A 

Rate/Acre 

Active 

Ingredient 

2,4-D 

0.5-1.0 lb/A 

paraquat 

0.6-0.75 lb/A 

plus surfactant 

triclopyr 

0.375 lb/A plus 

surfactant 

glyphosate 

0.5-2.0 lb/A 

molinate 

3.0-4.0 lb/A 

molinate 

3.0-4.0 lb/A 

thiobencarb 

4.0 lb/A 

thiobencarb 

4.0 lb/A 

Time To Apply 

Labels differ in 

the time interval 

between 

application and 

planting 

Near planting and 

when weeds are 

less than 6" 


planting 

7-14 days prior 

to planting 

Immediately prior 

to flooding for 

water-seeded rice 

Post-flood before 

planting 

Immediately after 

soil preparation 

and prior to 

flooding for 

water 

After flooding 

before seeding into 

"clear water" 



69 



weeds. Good on 

hard to control 

weeds like 

alligatorweed and 

cutleaf 


Most annual 


and grasses 

Good on 

alligatorweed and 

other perennial 


Most annual 

grasses and many 


Barnyardgrass and 

annual sedges. 

Partial control of 

red rice 

Barnyardgrass 

and annual 

sedges. Partial 

control of red rice 

Barnyardgrass 

and annual 

sedges. Partial 

control of red rice. 

Ducksalad and 

waterhyssop on silt 

loam soils 

Barnyardgrass, 

sedges and partial 

control of red rice 

Remarks 

Follow label restrictions regarding application 

timing and total amount of 2,4-D that can be 

applied per season. 

Especially useful on small red rice 

immediately before flooding to water-seed. 

Apply 2 days before establishing a flood. 

Avoid drift to nontarget crops. 

May be useful where applications of 2,4-D 

cannot be made. 

For use in reduced-till or no-till rice. Allow 5-7 

days between application and flooding for 

planting. 

Recommended for water-seeded rice in all 

areas, and dry-seeded rice on heavy 

delta soils. When used PPI, use shallow 

incorporation, 1" or less, is essential. For 

best results incorporate thoroughly into a wellprepared 

seedbed immediately after 

application. When water seeding, flood for 

seeding within 12-24 hours. To assure an 

adequate stand, an increased seeding rate 

and temporary drainage may be desirable. 

Drained fields should be reflooded within 5 

days to assure maximum weed control. 

Apply into the flood before planting. Water 

should be muddy from water-working of soil. 

For water seeded rice only. Follow other 

above-mentioned practices. 

Note: Water working of the soil may not be a 

recommended agronomic practice. 

Water-seeded rice only. Apply to seedbed 

free of vegetation. Field should be flooded, 

seeded with pre-sprouted seed, drained 

to optimize stand establishment and reflooded 

as soon as seedlings have rooted (no 

more than 5 days). 

Similar to granular Ordram treatment. Do not 

disturb field after application. Do not use if 

fields were cultivated while flooded or 

“worked in the water.”



Broadcast 

PREEMERGENCE 

Command 3 ME 

0.8-1 pt/A light soil 

1-1.33 pt/A heavy soil 

Facet 75 DF 

0.33-0.44 lb-light soil 

0.44-0.5 lb-medium soil 

0.5-0.67 lb-heavy soil 

Rate/Acre 

Active 

Ingredient 

clomazone 

0.3-0.5 lb/A 

quinclorac 

0.25-0.50 lb/A 

DELAYED PREEMERGENCE 

Bolero 

4 pt/A 

Facet 75 DF + 


3.3 EC 

0.25-0.5 lb/A + 

2.4 pt/A 

POSTEMERGENCE 

2,4-D (3.8 L) 

2.5-3.0 pt 

OR 

HiDep 

1.0-2.5 pt 

Apply 5 gal by air, 20 by 

ground 

Aim 2 EC 

1.6-3.2 oz/A 

Arrosolo 3+3E 

3.0-4.0 qt 

Basagran 

1.5 - 2.0 pt/A 

Bolero 

3.0 pt plus 

propanil 

3.0 lb/A (see propanil for 

appropriate amount of 

desired formulation) 

Command 3 ME 

0.8-1.33 pt/A 

impregnated on 150 

lb/A fertilizer 



Broadcast 

thiobencarb 

4.0 lb/A 

quinclorac + 

pendimethalin 

0.25-0.75 + 1 lb/A 

2,4-D 

1.25-1.5 lb/A 

OR 

0.48 to 1.2 lb/A 

carfentrazone 

0.025-0.05 lb/A 

molinate + 

propanil 

4.5-6.0 lb/A 

bentazon 

0.75-1.0 lb/A 

thiobencarb 

3.0 lb/A plus 

propanil 

3.0 lb/A 

clomazone 

(water-seeded) 

0.3-0.5 lb/A 

Rate/Acre 

Active 

Ingredient 

Time To Apply 


before rice and 

weeds have 

emerged 



weeds have 

emerged 



weeds have 

emerged 

1-5 days before 

rice emergence or 

5-9 days after 

planting. Drill 

seeded rice only 

After tillering but 

before panicle 

initiation. (Usually 

6-8 wks. 

depending on 

variety, season or 

other factors) 

Rice should be at 

least 2 to 3 leaf 

and actively 

growing 

Apply at same time 

that would be 

suitable for 

propanil 

Apply before 

weeds exceeds 

labeled height 

Dry-Seeded - after 

rice has emerged 

if soil is wet or at 

the 2-3 leaf stage if 

soil is dry. 

Water-Seeded - 

after rice is in 2 

leaf stage 

Rice should be 

pegging and 


with 1 to 2 visible 

leaves 

Time To Apply 



70 


Remarks 

Annual grasses Do not apply by air. Adhere to buffer zone 

restrictions. Medium grain varieties may be 

more sensitive to Command. 


hemp sesbania, 

signalgrass, and 

morningglory 


sprangletop, 

annual sedges and 



weeds 


broadleaf 

signalgrass, 

sprangletop, 

morningglory, 


and northern 

jointvetch 


weeds and some 

seedling sedges 

Do not use on sand or loamy sand. Does not 

control sprangletop. Can injure rice that is not 

completely covered with soil. Must be 

activated by rainfall or flushing. Drill-seeded 

rice only. 

Apply post plant to dry-seeded rice after soils 

have been sealed by rainfall or flushing, but 

1-5 days before rice emerges. Do not allow 

soil to dry and crack. Control usually will not 

exceed 3 weeks. 

Applied to soil that has been sealed by rain or 

flush. Drain surface water before application. 

Rice seed exposed to spray may be severely 

injured. Rice seed must have imbibed 

germination water prior to application. 

Rainfall or flush required for reactivation. 

DO NOT apply to water-seeded rice as a 

delayed preemergence application. 

Best time is at the first green ring which is the 

beginning of elongation, but apply up to 

second green ring. Earlier or later 

applications may result in rice injury. Rice 

should have a shallow flood at the time of 

treatment. HiDep is currently labeled for 

ratoon crop. 

Hemp sesbania, Similar activity to Blazer. Add surfactant only 

red stem, toothcup, when large weeds are present. Expect injury 

palmleaf with high temperatures and humidity. 

morningglory, 1 to 

2 leaf jointvetch 


sprangletop, and 


weeds 

Redstem, 

ducksalad 

dayflower, and 

some sedges 


some sedges and 


weeds 


broadleaf signal 

grass, junglerice, 

sprangletop, 

ducksalad 



Similar in control to propanil. May be more 

active on certain weeds or when grasses are 

larger when compared to equivalent rate of 

propanil. 

Basagran may be tank-mixed with propanil at 

1.5 pt. Basagran plus 3.0 qt. propanil per 

acre. Loweringof flood may be required to 

expose weeds. 

Treatment will provide residual activity if field 

is flushed or flooded within 3 days. Do not 

submerge rice when applying the permanent 

flood. 

After application allow 24 to 48 hours after 

application before flushing or establishing a 

pinpoint flood. Medium and short grain rice 

varieties may be more sensitive. 

Remarks


Clincher 

13 to 15 oz/A 

plus COC 

Facet 75DF 

0.50 lb or 0.67 lb 

Facet 75DF 

0.50 lb plus 

propanil 3.0 qt/A 

Grandstand 

1.0 pt/A 

Grasp 

2-2.3 oz/A POST 

Londax 60 DF 

1.0-1.60 oz/A 

Londax 60 DF 

0.75-1.0 oz/A + COC 

Londax 60 DF 

1.0 oz/A + 

propanil at 3.0 to 4.0 

lb/A (see propanil for 

appropriate amount of 

desired formulation) 

Londax 

0.75-1 oz/A 

+ Permit 0.25-0.5 oz/A 

cyhalofop 

0.25 to 0.28 

quinclorac 

0.375-0.50 lb/A 

plus 2.0 pts crop 

oil concentrate 

quinclorac 

0.375 lb/A 

plus propanil 

3.0 lb/A 

triclopyr 

0.375 lb/A 

penoxulam 

0.032-0.036 lb/A 

bensulfuron 

0.6-1.0 oz/A 

bensulfuron 

0.45-0.6 oz/A 

bensulfuron 

0.6 oz/A plus 

propanil 

3.0-4.0 lb/A 

bensulfuron + 

halosulfuron 

0.028-0.04 lb/A + 

0.012 to 0.023 

lb/A 

1 to 3 leaf grasses 

preflood. 

1 to 2 tiller grasses 

posr-flood 

Water seeded: 

after rice is in 2leaf 

stage 

Dry seeded: after 

rice emergence 

71 



broadleaf 

signalgrass, fall 

panicum, 

junglerice, 

knotgrass, 

sprangletop 


signalgrass, 

jointvetch, 

sesbania. 


alligatorweed at 

highest rate 

Same as above Same as above 

plus increased 

control of 

sprangletop and 

some sedges 


small. Rice must 

be in the 3-4 leaf 

to 1/2" internode 

stage 

Alligatorweed, 


texasweed, 

jointvetch and 

other broadleaf 

weeds 

Apply from Barnyardgrass, 

emergence (drill- junglerice, 

seeded) to pegging ducksalad, annual 

to 1 leaf (water- sedges, and small 

seeded) to 60 days actively growing 

before harvest weeds. 

Apply into flood 

when weeds are 

small and 

submerged (See 

remarks) 

1-7 days following 

permanent flood 

Before permanent 

flood 

Apply 13 oz/A early and 15 oz/A on larger 

grasses and knotgrass, not to exceed 25 

oz/A/year. Best activity under saturated soil 

conditions. Refer to label for approved tankmixes. 

For water- or drill-seeded rice. Does not 

control sprangletop. Do not apply to rice in 

the spiking stage if water-seeded. After 

application, flushing may be required for 

reactivation. Must use 2 pt/A crop oil 

concentrate. 

For water- or drill-seeded rice. Do not apply 

to rice in the spiking stage if water seeding. 

Facet may be applied to spiking rice if dryseeding. 

Follow label concerning the addition 

of crop oil or surfactants. 

Weak on ducksalad, overlapping of swaths 

may result in rice injury. Do not "dress" ends 

of field. Two applications per season are 

allowed. 

Controls barnyardgrass and junglerice (1 leaf 

to 2 tiller) and small broadleaf weeds; 

however, provides little to no control of 

sprangletop, broadleaf signalgrass, and fall 

panicum. Refer to label for surface irrigation 

and permanent flood establishment 

Aquatic broadleaf Alligatorweed cannot be well established. 

weeds and sedges. Control may not be adequate under cold 

Suppression of water conditions. Londax may be applied 

alligatorweed impregnated on dry fertilizer. Certain 

populations of ducksalad may not be 

controlled. 

Eclipta, 

gooseweed, 

redstem and 

sedges 

Before flood Sedges, hemp 

sesbania, 

joinvetch, most 

aquatic weeds 

Need 3-4 leaves above water at time of 

treatment. 

Eclipta, 

Good for controlling aquatic weeds where 

gooseweed, 2,4-D cannot be used. 

palmleaf 

morningglory, 

texasweed, sedges 

and grasses 

See comments for bensulfuron and 

halosulfuron. Do not apply post-flood.



Broadcast 

Rate/Acre 

Active 

Ingredient 


Ordram l5G 

20-25 lb of granular 

material 

Permit 

2/3 to 1 1/3 oz/A + 

0.25% NIS 

Propanil (Various 

formulations) 

3.0 to 6.0 qt of 4.0 lb/gal 

material 

OR 

3.5-7.0 lb of 80% dry 

flowable. 

Apply 10 gal by air, 20 

by ground. 

Regiment 80 WP 

0.4-0.8 oz/A 

Ricestar HT 0.58 EC 

13-24 oz/A 

Ricestar + Whip 360 

12 oz/A + 5 oz/A 

9 oz/A + 8 oz/A 

Ultra Blazer 2L 

0.5 pt/A + 

1.0 qt nonionic 

surfactant/100 gal 

finished spray 

molinate 

3.0-4.0 lb/A 

halosulfuron 

0.032-0.063 lb/A 

+ 0.25% NIS 

propanil 

3.0-6.0 lb/A 

bispyribac- 

sodium 

0.32-0.63 oz/A 

fenoxyprop 

0.059-0.109 lb/ 

aciflurofen 

0.125 lb/A 

Time To Apply 

Rice should be 

large enough to be 

flooded. Grass 

should be a 

minimum of 1" but 

no taller than 5" 

After rice 

emergence to preflood 

Grass prior to 4 

leaf stage. 

Usually within 

10-14 days after 

seeding 

Rice should be at 

least 3 leaves. 

Barnyardgrass 

should be 1 leaf to 

tillering. Broadleaf 

weeds should be 1 

to 4 leaf 



72 



seedling yellow 

nutsedge, 

fimbrystilis, and 

spike-rush 

Sedges, hemp 

sesbania, 

jointvetch 

Most annual 

grasses, some 

sedges and broadleaf 

weeds in the 

seedling stage 


junglerice, 

nutsedge, and 


weeds 

1 to 4 leaf grasses Barnyardgrass, 

broadleaf 

signalgrass, 

junglerice, 

sprangletop. 

4 to 5 leaf grasses 

5 leaf to 1 tiller 

grasses 

After sesbania is 

above rice plants 

but before 

sesbania is in the 

flowering stage 


broadleaf 

signalgrass, 

junglerice, 

sprangletop 

Remarks 

Grass must be at least 2/3 submerged at time 

of application. A flood of at least 2 in depth 

must be maintained after treatment. Drainage 

may result in loss of control. Can reduce 

yields of varieties Millie and Alan if applied 

late. 

Do not apply post-flood. 

Use 3.0 lb for grass in 3-leaf stage, 4.0 to 4.5 

lb for grass in 4 to 5-leaf stage, 5.0 lb for 

larger grass that is tillering; control usually not 

entirely satisfactory. Larger grass or grass 

growing under stress may be better controlled 

with EC formulation. Do not apply after rice is 

in the late tillering stage (45-60 days after 

planting). Do not use more than 6.0 lb ai per 

single treatment or apply over 8.0 lb total per 

season. Apply to drained field and flood in 

about 12 to 24 hours if weather is warm, 

grass is growing actively and soil is moist. 

During cool cloudy weather, leave unflooded 

4 to 5 days if possible. Do not treat when 

temperature is below 50°F or above 100°F. 

In many cases a reinfestation occurs and a 

second application is needed. However, the 

8.0 lb season limitation should not be 

exceeded. Do not apply to second crop. 

Consult label concerning use of surfactants or 

crop oils. 

Controls large barnyardgrass and junglerice 

and suppression of some perennial 

Echinochloa sp.; however, provides little to no 

control of sprangletop, broadleaf signalgrass, 

and fall panicum. 

Apply 13 oz/A on 1 to 2 leaf grasses and up 

to 24 oz/A on larger grasses. Activity 

decreases on grasses with more than 4 

leaves. Do not apply more than 30 oz/A per 

year. Tank-mix with only approved herbicides 

on the Ricestar label. 

As grass size increases reduce the rate of 

Ricestar and add Whip 360. When adding 

Whip 360 refer to label for application 

precautions. Do not apply Ricestar + Whip to 

aromatic, short, and medium grain rice 

varieties. 

Hemp sesbania Do not apply Blazer within 50 days of harvest. 

Do not harvest crawfish from treated fields. 

Add surfactant as indicated on the label. 

Blazer may be tank-mixed with propanil at 1.0 

pt Blazer plus 3 qt propanil/A for jointvetch 

and morningglories.



Broadcast 

HERBICIDE-TOLERANT RICE 

Beyond 

5 oz/A POST 

Clearpath 

0.5 lb/A 

NewPath 

4 to 6 oz/A PPI or PRE 

followed by 

4 to 6 oz/A POST 

NewPath 


followed by 


Rate/Acre 

Active 

Ingredient 

imazamox 

0.04 lb/A 

imazethapyr 

0.063 lb/A 

+ quinclorac 

0.312 lb/A 

imazethapyr 

0.063 lb/A 

PPI or PRE 

followed by 

0.063 lb/A 

POST 

imazethapyr 

0.063 lb/A 

POST 

followed by 

0.063 lb/A 

POST 

RATOON CROP HERBICIDES 

Time To Apply 

Apply only after 

two 4 oz/A 

applications of 

NewPath. 

Apply preplant up 

to 7 days prior to 

planting, 

preemergence, or 

postemergence 

(up to 5 lf rice if 

drill-seeded, and 

2 to 5 leaf rice if 

water-seeded. 

Apply prior to 

planting and lightly 

incorporate or 

surface apply after 

planting. 

Sequential 

application to 3 to 

5-leaf rice 

Make first 

application at spike 

to 1-leaf and 

second application 

10 to 14 days later 



73 


Red rice, 


broadleaf 

signalgrass, 

junglerice, and 

sedges. Select 


refer to label. 

Red rice, hemp 

sesbania, 


broadleaf 

signalgrass, 

junglerice and 

sedges 

Red rice, 


broadleaf 

signalgrass, 

junglerice 

Red rice, 


broadleaf 

signalgrass, 

junglerice and 

sedges 

Remarks 

Approved only for enhanced tolerant Clearfield 

rice cultivars and Clearfield hybrids. Refer to 

label for approved tank-mixes. Avoid off-site 

movement of Beyond to non-Clearfield 

varieties. Must be applied from tillering to 

panicle initiation. May be used in dry-, drill, or 

water-seeded systems. 


rice cultivars and Clearfield hybrids. Refer to 

label for approved tank-mixes. Avoid off-site 

movement of Clearpath to non-Clearfield 

varieties. This product provides 4 oz/A 

NewPath + 0.4 lb/A Facet. 


rice cultivars and Clearfield hybrids. Clearfield 

rice can be planted as dry, drill, or waterseeded. 

Avoid off-site movement of NewPath 

onto conventional rice varieties. 

Approved only for use on CL161 and Clearfield 

hybrids. Refer to label for approved tankmixes. 

*HiDep 2,4-D, Basagran and Grandstand are also labeled for ratoon (stubble) crop rice. See labels for rates and timing of 

application. 2,4-D Dacamine production has been discontinued and supply is very limited. 

OTHER LABELED HERBICIDES 

Several additional herbicides have been labeled for rice. Although not generally recommended by the LSU Agricultural Center for all 

rice farmers, these materials may have some use in certain situations. 

Prowl + Propanil 

(postemergence) 

Prowl 

(delayed - drillseeded) 

Apply 1.8-2.4 pts/A of Prowl (Use higher rates on heavier soils) + 3.0-4.0 qts/A of Propanil. Apply when 

barnyardgrass is in the 1 to 3-leaf stage of growth. Reflooding or flushing of field may be delayed. Rainfall 

or flushing of field within 7 days is required to activate Prowl. If used on water-seeded rice do not apply 

before the 3 to 4-leaf stage. 

Apply 1.8-2.4 pt/A of Prowl (use higher rates on heavier soils). Apply after rice seed has absorbed water 

and germinated. Soil should be sealed from rainfall or flushing before application. May be mixed with 

Roundup Ultra or Facet. 

NOTE: Water-seeded, no-till systems. Research has shown that dense vegetation may be effectively killed with 

herbicides but stand establishment is difficult because of inadequate soil/seed contact due to mats of dead 

vegetation. Additional research has shown that soil that has been kept free of vegetation all winter will 

become compacted and rice seedling may have difficulty "pegging" and will tend to drift. 

Herbicide Resistant Rice Weeds: Certain populations of barnyardgrass, ducksalad, and pickerelweed 

have become resistant to some traditional herbicides. If this occurs use alternative herbicides. Contact 

your local county agent for recommendations.

74 


Activity of selective herbicide programs for perennial grass control 1 . 

Creeping 

Brook paspalum Knotgrass rivergrass 4 

Water paspalum 

Command PRE 2 Command PRE fb Clincher 

4 5 4 5 

3 Command + Facet PRE 

5 9 8 8 

2 Command + Facet PRE 

4 5 4 5 

2 fb Clincher 3 Command PRE fb Grasp 

5 9 8 9 

3 5 5 7 5 

Facet + Prowl DPRE2 

Facet + Prowl DPRE fb Clincher 

4 6 5 7 

3 6 9 7 9 

Grasp 3 Clincher fb Clincher 

4 2 6 2 

3 Newpath fb Beyond 

7 9 8 9 

3 Newpath fb Newpath 

7 9 8 8 

3 Regiment fb Regiment 

7 9 8 8 

3 Ricestar HT fb Ricestar HT 

3 2 7 2 

3 Stam 

3 4 6 5 

3 2 3 3 2 

1 

Control rating is based on herbicides applied to small actively growing plant segments. 

2 

Two weeks after application 

3 

One month application 

4 

Also refereed to as perennial barnyardgrass

SOYBEANS 

75 


Table 1. Effectiveness of soybean preemergence herbicides (4 weeks after application and rain activated if needed) 

Herbicide 

Authority 

Broadleaf 

Canopy XL 

Broadstrike + 

Dual 

Broadstrike + 

Treflan 

itchgrass 

seedling 

johnsongrass 

annual 

grasses 

red rice 

pigweed 

prickly sida 

hemp 

sesbania 

morningglory 

1 4 5 4 9 8 7 9 9 6 8 8 8 9 9 

1 7 8 8 9 9 2 7 7 6 7 7 5 8 9 

8 9 9 8 9 9 2 7 7 6 7 7 5 8 9 

Canopy 1 6 8 6 9 9 8 8 8 8 7 9 5 8 9 

Command 8 9 9 7 4 9 1 4 4 1 1 8 2 9 6 

Dual 

Magnum 

Dual II 

Magnum 

1 7 9 8 9 5 2 1 1 2 3 7 1 3 5 

FirstRate 1 2 3 1 3 7 3 9 9 6 - - - 8 5 

Lasso 1 7 9 8 9 5 2 1 1 2 3 7 1 3 5 

Linex 1 5 8 5 9 8 5 3 4 3 4 9 4 5 7 

Outlook 1 7 9 8 9 5 2 1 1 2 3 7 1 3 5 

Prowl 

Pendimax 

Prowl H2O 

8 9 9 6 9 1 1 3 0 2 0 2 1 1 0 

Pursuit 1 8 8 7 8 5 3 6 9 5 6 7 1 6 6 

Scepter DG 1 6 8 7 9 8 3 7 9 5 8 7 1 7 7 

Sencor 1 6 8 6 9 9 8 5 6 4 6 9 6 7 9 

Treflan, 

Trifluralin, 

Trilin, Tri-4, 

Trific 

8 9 9 6 9 1 1 3 0 2 0 2 1 1 0 

Valor 0 2 6 0 9 8 8 8 - 8 8 8 5 8 8 

Rating: 0 = no control, 10 = 100% control 

cocklebur 

sicklepod 

texasweed 

redweed 

jointvetch 

wild poinsettia 

copperleaf

Table 2. Effectiveness of soybean postemergence herbicides (4 weeks after application) 

Herbicide 

Directed Sprays 

itchgrass 

seedling 

johnsongrass 

annual 

grasses 

red rice 

pigweed 

prickly sida 

hemp 

sesbania 

morningglory 

76 


2,4-DB + 0.5 %surf. 0 0 0 0 9 4 6 9 9 4 4 4 6 5 5 6 


Gramoxone Max 


4 5 9 7 9 6 5 6 4 6 3 5 7 8 9 8 

Linex, Lorox 

+ 0.5% surf. 

2 2 4 2 9 7 9 8 6 5 7 4 9 7 8 8 

Linex, Lorox or Sencor 

+ 2,4-DB + 0.5% surf. 

2 5 6 2 9 8 9 9 9 7 7 4 9 8 9 9 

Sencor + 0.5% surf. 2 5 8 2 8 7 8 7 7 6 7 4 8 7 9 9 

Overhead Sprays 

Assure II + COC 9 9 9 9 0 0 0 0 0 0 0 0 0 0 0 0 

Basagran + 0.5% surf. 0 0 0 0 4 8 6 4 9 1 2 7 2 5 4 5 

Classic + 0.25% surf. 0 0 0 0 9 2 8 8 8 8 2 8 7 8 3 4 

Cobra + surf. 1 3 3 1 9 8 9 8 8 3 7 8 6 8 8 9 

Conclude Xact 8 8 9 8 9 8 9 9 9 3 6 8 5 8 9 9 

FirstRate + 

COC or surf. 

Frontrow + 

COC or surf 

cocklebur 

0 3 3 0 6 8 7 9 9 4 - 8 - 8 7 6 

0 2 3 0 3 8 4 9 9 6 - 8 - 6 6 6 

Flexstar + COC or surf. 0 2 4 0 9 3 9 8 8 3 6 5 7 8 9 9 

Fusilade DX + 

COC or surf. 

9 9 9 7 0 0 0 0 0 0 0 0 0 0 0 0 

Fusion + COC or surf. 8 9 9 7 0 0 0 0 0 0 0 0 0 0 0 0 

Glyphosate 

(RR Varieties only) 

9 9 9 9 9 8 7 8 9 8 9 8 7 9 9 9 

Glyphosate + Classic 

(RR varieties only) 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 

Glyphosate + Blazer 


Glyphosate + FirstRate 


Glyphosate + Resource 


Poast Plus + COC 9 8 9 7 0 0 0 0 0 0 0 0 0 0 0 0 

Pursuit 8 8 8 8 9 4 2 7 9 3 7 6 2 6 4 5 

Scepter DG + 

0.25% surf. 

5 6 7 7 9 6 3 7 9 5 7 5 0 8 2 3 

Select + COC 9 9 9 8 0 0 0 0 0 0 0 0 0 0 0 0 

Sequence 9 9 9 9 9 8 7 8 9 9 9 8 7 9 9 9 

Storm + surf. 1 4 3 1 9 8 9 8 9 4 6 8 5 8 9 9 

Typhoon + 

COC or surf. 

9 9 9 8 9 3 9 8 8 3 6 5 6 8 9 9 

Ultra Blazer 0 2 3 0 8 3 9 8 6 3 5 3 5 8 8 8 

Rating: 0 = no control, 10 = 100% control 

Surf. = surfactant: COC = crop oil concentrate 

sicklepod 

texasweed 

redweed 

jointvetch 


copperleaf 

smellmelon

HERBICIDE-TOLERANT SOYBEAN VARIETIES 

77 


Roundup Ready Soybeans are varieties tolerant to overtop application of glyphosate herbicide. The initial 

application of glyphosate should be made at 32 ounces product/acre (1.0 quart/acre) when weeds are less than 4 

inches tall. If the first application is made to weeds 5-12 inches tall, increase the glyphosate rate to 48 ounces/acre 

(1.5 quarts/acre). Many different formulations of glyphosate are currently available. Use rates differ. Consult the 

product label. Ensure that the correct Roundup Ultra rate is applied to the correct weed height. If another 

formulation of glyphosate is used, ensure that formulation is labeled for use in Roundup Ready soybeans. Consult 

the label to determine the correct herbicide rate and proper weed size for application. Remember that the longer 

the weeds remain in the field, the larger they become and longer they compete with the soybeans. Since some 

morningglories, hemp sesbania, yellow and purple nutsedge and dayflower are not controlled with one application, 

two applications of glyphosate are often needed. Sequential treatments may be needed, depending upon weed 

pressure, growing conditions and other factors. Sequential treatments are also timed to weed size: 2-to-3 inch 

weeds need 12 to 16 oz/A, 3-to-6 inch weeds need 24 oz/A, and 6-to-12 inch weeds need 32 oz pr/A. Beware that 

there is a limit of the amount of glyphosate that can be applied from soybean cracking through flowering. These 

amounts are: 3 qts of a 4L formulation, 2.4 qts of a 5L, 2.4 qts of a 5.4L or 1.3 qts of a 5.5L. Be careful to avoid 

drift at all times. If applying glyphosate by air, however, BE EXTREMELY CAREFUL to prevent off-site 

herbicide movement. 

Classic + glyphosate tank mix. Classic (active ingredient chlorimuron) at 1/4-to-1/3 ounce product/acre + 

glyphosate may be tank-mixed for improved POST and perhaps some PRE, weed control in Roundup Ready 

soybeans. A non-ionic surfactant at 2.0 pints/100 gallons spray solution may be needed. Check the label for the 

specific glyphosate product you are using. Apply this tank mix at the proper weed height and after the first soybean 

trifoliate leaf has expanded. 

Other glyphosate tank-mixes. Glyphosate may also be tank-mixed with Ultra Blazer, Firstrate or Resource for 

controlling weeds in RR soybeans. The best choice depends on the weed spectrum present. Be certain to scout 

fields and choose the appropriate herbicide based on weed spectrum. Ultra Blazer is a good choice if hemp 

sesbania is present, but is somewhat weak on jointvetch. Firstrate is a good choice if prickly sida is present. 

Resource can increase control of large morningglory. See Table 2 for expected levels of control of several 

common weeds. 

Sulfonylurea tolerant soybeans. Soybean varieties, known as STS varieties, are tolerant to herbicides such as 

Classic, Canopy or Synchrony STS (members of the sulfonylurea herbicide family). These varieties allow utilization 

of the sulfonylurea herbicides in high pH soils in the current crop year and in following crops. Soybean varieties 

also are available that are tolerant to both glyphosate and sulfonylurea herbicides.



Broadcast 

PREPLANT 

2,4-D 

0.5 - 1.0 qt 

Backdraft SL 

2.5 qt 

Canopy XL or 

Authority Broadleaf 

3.7 - 4.3 oz 

glyphosate 4L 

1.0 - 2.0 qt 

glyphosate 5L 

26 - 52 oz 

glyphosate 4 L 

0.5 - 1.0 qt 

glyphosate 5L 

13 - 26 oz 


2 - 4 pt 

Gramoxone Max 3L 

0.75 - 2.7 pt 

plus surfactant or COC 

Touchdown IQ 

0.5 – 2 qt 

Synchrony XP 

0.75 - 2 oz 

Valor SX 

2 - 3 oz 

+ glyphosate or 

paraquat 

Rate/Acre 

Active 

Ingredient 

2,4-D various 

formulations 

imazaquin 

0.089 lb 

+ glyphosate 

0.75 lb 

sulfentrazone 

0.11 - 0.13 lb 

+ chlorimuron 

0.02 - 0.03 lb 

glyphosate 

1.0 - 2.0 lb 

glyphosate 

0.5 - 1 lb 

paraquat 

0.66 - 095 lb 

glyphosate 

0.5 - 4.0 lb 

chlorimuron 

+ thifensulfuron 

0.095 lb 

flumioxazin 

1.02 - 1.53 oz 

+ glyphosate 

or paraquat 

PREEMERGENCE - Incorporated 

Broadstrike + Treflan 

lt soil: 1.5 - 2.0 pt 

med soil: 2.0 pt 

hvy soil: 2.25 pt 

Canopy XL or Authority 

Broadleaf 5.1 - 7.9 oz 

flumetsulam 

0.04 - 0.07 lb 

+ trifluralin 

0.60 - 0.95 lb 

sulfentrazone 

0.15 - 0.23 lb 

+ chlorimuron 

0.03 - 0.05 lb 

Time To Apply 

Application timings 

differ by label 

Before or after 

emergence of 

Roundup Ready 

varieties, before 

emergence of non- 

Roundup Ready 

varieties 

Stale seedbed 

conservation 

tillage/burndown. 

Apply up to 30 

days before 

planting or at 

planting 







78 



weeds 

Grasses and 


Weak on sesbania 

and jointvetch 

Morningglories, 

yellow and purple 

nutsedge, 

pigweeds, prickly 

sida, wild 

poinsettia, and 


weeds 

Johnsongrass 

from rhizomes 

and most emerged 

vegetation 

Most annual grass 

and broadleaf 

weeds preferably 

not more than 6" 

tall 

Near planting time All annual grass 

and broadleaf 

weeds, preferably 

not more than 

6” tall 

Minimum/no-till 

soybeans before 

crop emergence 

45 days before 

planting or 

emergence of 

soybeans 

Apply before, 

during or after 

planting but 

BEFORE crop 

emerges 

Preplant 

incorporated 

Preplant 

incorporated up to 


planting, at 

planting, or before 

emergence. DO 

NOT apply to 

emerged crop. 

Most annuals less 

than 12" and many 

perennials 

Remarks 

ADHERE TO 2,4-D LABEL REPLANT 

RESTRICTIONS. Controls most broadleaf 

weeds not controlled by glyphosate or 

paraquat. May be tank-mixed with either. 

Will control emerged grasses and broadleaf 

weeds and provide residual control of certain 

weeds. Consult label for approved tankmixes 

and weeds controlled. 

Beware of soil pH, OM and recrop 

restrictions. May add 2,4-D, paraquat or 

glyphosate to increase weed spectrum. Apply 

in a minimum of 10 GPA. Add NIS at 1 qt/100 

gal or COC at 1 gal/100 gal spray solution. 

Crop stunting may occur if excessive rainfall 

occurs after application but before soybeans 

emerge. Consult label. 

Apply after rhizomes have sprouted and 

johnsongrass is at least 18" tall. Wait 7 days, 

disk under vegetation and plant. Follow label 

directions concerning water volumes and 

surfactant requirements. May tank mix with 

labeled residual soybean herbicides. 

Slower acting than paraquat. May give better 

control of larger vegetation than paraquat. 

Follow water volumes and surfactant 

requirements. May tank mix with labeled 

residual soybean herbicides. 

This treatment is most useful on heavy soil 

that should not or can not be disturbed in the 

spring before planting. Surface applied 

preemergence herbicides may be applied 

after planting without additional seedbed 

preparation. Rate depends on weed size. 

May tank mix with labeled residual soybean 

herbicides. 

Winter annuals Tank-mix with glyphosate for improved weed 

spectrum. 

Broadleaf weeds Will enhance control of some weed species 

that glyphosate or paraquat alone is weak on. 

Will provide some residual weed control. Do 

not apply more than 3 oz/A per season. 

Consult label for approved tank-mix partners. 

Most annual 

grasses and 

selected broad- 

leaf weeds 


yellow and purple 

nutsedge, 

pigweeds, prickly 

sida, wild 

poinsettia and 


weeds 

Incorporate 1-3" deep immediately after 

application. 

Do not apply to land to be rotated to cotton 

the next year. Soil pH > 7.0 greatly reduces 

rotational flexibility. Do not use on soils with 

pH > 7.5. Crop stunting may occur if 

excessive rainfall occurs after application but 

before soybean emergence. Consult label.



Broadcast 

Rate/Acre 

Active 

Ingredient 

PREEMERGENCE – Incorporated (continued) 

Command 3ME 

lt-med soil: 2.0-2.67 pt 

hvy soil: 2.67 pt- 

Prowl/Pendimax 3.3 EC 

Prowl H2O 

lt soil: 1.2 - 1.8 pt 

med soil: 1.8 - 2.4 pt 

hvy soil: 2.4 - 3.6 pt 

Treflan, Trifluralin, 

Trific, Trilin, 

Tri-4 – 4 EC 

lt soil: 1.0 - 1.5 pt 

med soil: 1.5 - 2.25 pt 

hvy soil: 2.0 - 3.0 pt 

clomazone 

0.75 - 1.0 lb 

pendimethalin 

0.5 - 1.5 lb 

trifluralin 

0.5 - 1.5 lb 

Time To Apply 

Preplant 


preplant without 

incorporation 

Preplant 

incorporated 

Preplant 

incorporated 



79 


Most annual 





seed and some 


Most annual 

grasses, 


seed and fair 

control of some 


Remarks 

Incorporate 1-3" deep within 3 hours of 

application. Follow rotational restrictions. 

*May be applied without incorporation. Do 

not incorporate for itchgrass control. 

Incorporate 2-3" deep within 7 days of 

application if sufficient rainfall for 

incorporation has not been received. Highest 

rates for high organic matter soils. Prowl is 

labeled to suppress rhizome johnsongrass by 

applying at twice the rate normally used to 

control seedling grasses. Follow instructions 

on label. 

Incorporate 2-3” deep. Trifluralin can be 

applied at the 2X rate (two times the rate for 

which it is labeled) for controlling annual 

weeds and to suppress rhizome johnsongrass 

and red rice. Follow instructions on label. 

Some fields are heavily infested with both grasses, especially seedling johnsongrass and broadleaf weeds. Combinations of a 

preplant incorporated and a surface applied material or mixtures of surface applied herbicides may provide better weed control than 

a single material. Each component of the mixture or combination should be applied at the same rate as if it is being applied alone 

unless the label specifically states otherwise. Tank mixtures of products such as Lasso/Dual+Linex, Lasso/Dual+Sencor surface 

applied, or preplant incorporated herbicides tank mixed with Sencor or Linex are labeled at rates different from the rate of each 

component when applied alone. Check these labels. Several herbicide mixtures are currently available as prepackaged mixes. 

See the section on prepackaged mixes. 

PREEMERGENCE SURFACE APPLIED 

Lasso-4L 




Canopy SP 

lt soil: 6.0 - 7.7 oz 

med soil: 7.7 - 10.0 oz 

hvy soil: 10.0 - 12.9 oz 

Outlook 6EC 

lt soil: 12 - 14 oz 

med-hvy soil: 14 - 18 oz 

Valor SX 

2 - 3 oz 

Broadstrike + Dual 

lt soil: 2.0 - 2.5 pt 

med soil: 2.25 - 2.5 pt 

hvy soil: 2.5 - 2.75 pt 

alachlor 

2.0 - 3 .0 lb 

chlorimuron plus 

metribuzin 

4.5 - 9.0 oz 

dimethenamid 

0.76 - 1.3 lb 

flumioxazin 

0.063 - 0.09 lb 

flumetsulam 

0.05 - 0.07 lb 

+ metolachlor 

1.8 - 2.6 lb 


grasses, red rice, 


seed and fair 



Preplant 


surface applied at 

planting 


and most broadleaf 

weeds 




seed and fair 



Preemergence Broadleaves with 

some suppression 

of annual grasses 

Preplant 



planting 

Most annual gras- 

ses and selected 


Apply after planting and before weeds 

emerge. May be incorporated. Shallow 

incorporation (1-2") with a spike tooth harrow 

or rolling cultivator is required to control red 

rice under low rainfall conditions. Also 

available in granular formulation. Consult 

label. 

Canopy cannot be used postemergence. 

Follow labeled rotational crop restrictions. 

Follow sprayer cleanup instructions before 

spraying subsequent crops. Do not apply to 

soils with a pH greater than 7.5. Do not apply 

to sensitive varieties. Exact rate is dependent 

on soil organic matter %. Consult label. 

Similar to Lasso and Dual. 

Consult label for approved tank-mixes to 

improve grass control. 

Weed control data are currently incomplete.



Broadcast 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

PREEMERGENCE SURFACE APPLIED (continued) 

Lorox 50DF 

lt soil: 0.66 - 1.25 lb 

med soil: 1.0 - 1.66 lb 

hvy soil: 1.25 - 2.0 lb 

Linex 4L 

lt-med soil: 1.0 - 2.33 pt 

hvy soil: 1.33 - 2.66 pt 

Scepter 70DG 

2.8 oz 

Squadron 

3.0 pt 

Pursuit 70DG 

1.44 oz 

Dual II 

lt soil: 1.5 - 2.0 pt 

med soil: 2.0 - 2.5 pt 


lt soil: 1 - 1.33 pt 

med soil: 1.33 - 1.67 pt 

hvy soil: 1.33 - 2.0 pt 

Dual Magnum 

lt soil: 1.0 - 1.33 pt 

med soil: 1.33 - 1.67 pt 

hvy soil: 1.33 - 2.0 pt 

Sencor 4F 

med soil: 0.50 - 1.0 pt 

hvy soil: 1.0 - 1.5 pt 

Sencor 75DF 

med soil: 0.30 - 0.67 lb 

hvy soil: 0.67 - 1.0 lb 

Prowl/Pendimax 3.3 EC 

Prowl H2O 

lt soil: 1.2 - 1.8 pt 

med soil: 1.8 - 2.4 pt 

hvy soil: 1.8 - 2.4 pt 

Canopy XL or 

Authority Broadleaf 

5.1 - 7.9 oz 

linuron 

0.50 - 1.0 lb 

imazaquin 

0.125 lb 

imazaquin plus 

pendimethalin 

0.12 + 0.75 lb/ 

imazethapyr 

0.063 lb 

metolachlor 

1.5 - 2.5 lb 

metolachlor 

0.96 - 1.91 lb 

metribuzin 

0.25 - 0.75 lb 

pendimethalin 

0.5 - 1.5 lb 

sulfentrazone 

0.15 - 0.23 lb 

+ chlorimuron 

0.03 - 0.0 lb 



At planting Most small 

seeded annual 

grasses and 


Surface applied, 

preplant 

incorporate, or 

at planting 

80 




weeds 

Remarks 

Exact rate depends on soil organic matter. 

Consult label. Plant seed at least 3/4" deep. 

Not recommended on soils lighter than sandy 

loams. Injury may occur on light soils if heavy 

rainfall occurs soon after application. Do Not 

exceed 2 lb/A in a single application. 

Scepter can be applied PPI within 30 days of 

planting. A sequential postemergence 

application may be required for hard to kill 

weeds such as sicklepod. Observe rotational 

restrictions. 

Same as above Same as above May require sequential POST application. 

Preplant 



planting 

Preplant 

incorporated, 

surface applied, or 

preplant 


and broadleaf 

weeds 

Most annual 



seed and fair 



Same as above Same as above Same as above 



weeds such as 

cocklebur, prickly 

sida, hemp 

sesbania, & 



grasses, johnsongrass 

from seed 



weeds 

Preplant 

incorporated up to 


planting, at 

planting or before 

soybean 

emergence. Do 

not apply to 

emerged crop 

Controls morningglories, 

yellow 

nutsedge & 

purple nutsedge, 

pigweeds, 

teaweed, wild 

poinsettia and 


weeds 

Control similar to Scepter. Better on grasses 

and weaker on certain broadleaf weeds. 18 

month rotational restriction for rice and cotton. 

Apply after planting and before weeds 

emerge. May be incorporated. Shallow 

incorporation (1-2") with a spike tooth harrow 

or rolling cultivator is required to control red 

rice under low rainfall conditions. 

Plant seed l 1/2" deep. On light soils O.M. 

content should be 2% or greater. Best 

performance expected on riverbottom soils 

and medium to heavy soils in the rice area. 

High rate for Miss. Delta clays. Do not apply 

to sensitive varieties. Sencor is labeled for 

use on light (sandy) soils to control sicklepod 

at 0.25 to 0.38 lb/A active ingredient. 

Highest rates for high organic matter soils. 

Do not apply to land rotated to cotton next 

year. Soil pH greater than 7.0 greatly 

reduces rotational flexibility. Do not use on 

soils with pH greater than 7.5. Crop stunting 

may occur if excessive rainfall occurs after 

application but before soybean emergence. 

Consult label.



Broadcast 

OVERTOP - early season 

Assure II 

5 - 10 oz 

Backdraft 4SL 

2.5 qt 

Basagran 4L 

1.5 - 3.0 pt 

Classic 25DG 

Skirmish 25DG 

0.5 - 0.75 oz 

Cobra 2L 

10.0 - 12.5 oz 

Conclude Xact B 

24 oz 

+ Conclude Xact G 

24 oz 

Firstrate 

0.30 oz 

Frontrow 

0.30 oz 

Fusilade DX 

0.37 - 0.75 pt for annual 

grasses up to 4" tall & 

johnsongrass 1-2 feet 

tall. 

0.75 pt for 


4-6" long. 

Rate/Acre 

Active 

Ingredient 

quizalofop 

0.10 - 0.20 lb 

imazaquin 

0.089 lb 

+ glyphosate 

0.75 lb 

bentazon 

0.75 - 1.5 lb 

chlorimuron 

0.008 - 0.012 lb 

lactofen 

0.15 - 0.19 lb 

acifluorfen 

0.25 lb 

+ bentazon 

0.50 lb 

+ clethodim 

0.12 lb 

cloransulammethyl 

0.25 oz 

cloransulammethyl 

0.25 oz 

+flumetsulam 

0.10 oz 

fluazifop 

0.125 - 0.50 lb 

Time To Apply 


exceed height 

recommended for 

treatment 

Roundup Ready 

varieties only. 

Before weeds 

exceed 8 inches. 

Apply after 

soybean plants 

have first trifoliate 

leaves 

Apply after 

soybeans 

have first trifoliate 

leaves and when 

weeds have 2-6 

leaves 

Before weeds 

exceed height 

limitations 

Apply to small 

weeds from less 

than 2"-6" 

Apply before 

weeds exceed 

height limitations 

(generally 2-4" tall) 

and prior to 

soybeans reaching 

50% flowering 

stage 

Apply to actively 

growing weeds 

prior to weeds 

exceeding 

maximum growth 

stage; generally 2- 

4 true leaves 


exceed height 


treatment 



81 


Annual and 


Grasses and 


Weak on sesbania 

and jointvetch 

Cocklebur,prickly 

sida. Fair on other 



pigweed, 

sicklepod, hemp 

sesbania 

Some morningglories, 

cocklebur, 

pigweeds,prickly 

sida, ballonvine, 

smellmelon, 

puncturevine, 

copperleaf 

Many grasses 

and broadleaves. 

Consult label 

Cocklebur and 

annual 

morningglories 

Remarks 



reduced control. Always add 1% 

nonphytotoxic crop oil concentrate or 0.25% 

nonionic surfactant. 


weeds and provide residual control of certain 

weeds. Consult label for approved tankmixes 

and weeds controlled. 

Add 1 pt. of nonionic surfactant per 50 gallons 

of water when targeting weeds other than 

cocklebur. 

Add a nonionic surfactant at 0.25% by 

volume. Follow rotational crop restrictions. 

Clean sprayer thoroughly before spraying 

other crops. Do not apply to soils with a pH 

greater than 7.5. May tank mix with 

glyphosate in Roundup Ready soybeans. 

Application may cause moderate burn of 

soybeans. Soybeans normally recover in 10 

days without loss of yield. Use 0.25% 

nonionic surfactant. Do not use a crop oil 

concentrate. 

A tank mix of Conclude Xtra G plus Conclude 

Xtra B is called Conclude Xtra. When mixing 

Conclude Xtra B with Conclude Xtra G 

ENSURE that Conclude Xtra B is added to 

agitating water in the spray tank first, followed 

by the COC (1 pt/A), followed by Conclude 

Xtra G. DO NOT pour Conclude Xtra B + G 

into the tank simultaneously. Can be a very 

effective treatment if timed correctly. Consult 

label. 

Application prior to full emergence of first 

soybean trifoliate may cause temporary 

chlorosis. May tank mix with other soybean 

herbicides, including glyphosate in Roundup 

Ready soybeans. May reduce grass control 

when tank mixed with some grass herbicides. 

Consult label for approved adjuvants. 

Cocklebur, May tank mix with other soybean herbicides, 

prickly sida, annual including glyphosate in Roundup Ready 

morningglories soybeans. May reduce grass activity when 

tank mixed with grass source herbicides. 

Consult label. Always add 1% nonphytotoxic 

crop oil concentrate or 0.25% nonionic 

surfactant. 

Annual and 





tank mixed with other herbicides. Always add 

1% nonphytotoxic crop oil concentrate or 

0.25% nonionic surfactant.



Broadcast 

Rate/Acre 

Active 

Ingredient 

OVERTOP - early season (continued) 

Fusion 

4.0 - 14.0 oz 

Poast Plus 

1.5 pt for annual 

grasses up to 4 in. tall. 

1.5 pt for johnsongrass 

1 - 2 ft. 

2.25 pt for 


4 - 6 inches long. 

Pursuit DG 

1.44 oz 

Reflex 2Ll 

1.0 pt - 1.5 pt 

OR 

Flexstar 1.88L 

2.0 - 3.0 pts 

Scepter 70DG 

2.8 oz 

2.0 oz 

for cocklebur 

Select 2 EC 

6 - 16 oz 

Sequence 5.25 L 

1.5 – 3.5 pts 

Synchrony XP 

0.75 oz 

Typhoon 

1.6 qt 


0.5 - 1.5 pt 


0.5 - 1.5 pt 

plus Basagran 4L 

1.5 - 3.0 pt 

OR 

Storm 1.5 pt 

OR 

Conclude Xtra 1.5 pt 

fenoxyprop – 

ethyl + fluazifop 

0.06 - 0.22 lb 

sethoxydim 

0.19 - 0.47 lb 

imazethapyr 

0.06 lb 

fomesafen 

0.25 - 0.38 lb 

imazaquin 

0.125 lb 

clethodim 

0.09 - 0.25 lb 

Metolachlor 

0.56 – 1.3 + 

glyphosate 

0.42 – 1.0 lb 

chlorimuron 

+ thifensulfuron 

0.063lb 

fomesafen + 

fusilade 

0.38 + 0.19 lb 

acifluorfen 

0.25 - 0.5 lb 

acifluorfen 

0.25 - 0.5 lb 

+ bentazon 

0.75 - 1.5 lb 

Time To Apply 

Same as above. 

Aerial applications 

require adjuvant 

adjustment 


exceed height 


treatment 

Before weeds are 

3" in height 

Before weeds 

exceed height 

limitations 

Apply after 

soybeans have 

emerged but 

before cocklebur 

and pigweed are 

12" tall (6" for wild 

poinsettia) 

Same as above. 

Refer to label for 

rate for specific 

grass species 

Roundup Ready 

varieties only. 

From cracking 

through 3 rd trifoliate 

When weeds are 1 

– 4 inches tall. 

Before weeds 

exceed label 

limitations 

Apply when 

seedling weeds are 

in 2-4 leaf stage 

and actively 

growing 



82 


Annual and 


Annual and 



and certain 


when actively 

growing and prior 

to 3" tall 


cocklebur, 

pigweed, hemp 

sesbania and 


grasses 

Cocklebur, 

pigweed, wild 

poinsettia 

Annual and 


Grasses and 


Remarks 

Consult label to determine proper application 

timing if using a broadleaf tank-mix or 

broadleaf sequential herbicide. Always add 


0.25% nonionic surfactant. 




tank-mixed with other herbicides. Always add 


0.25% nonionic surfactant. Consult labels for 

retreatment rates. 

See comments in preemergence section. 

Follow rotational crop restrictions. Add 

surfactant as indicated on the label. 

Soybeans are very tolerant to Reflex. May be 

mixed with grass control herbicides without 

reducing grass control. Rotation interval: 4 

months small grains; 10 months beans, corn, 

cotton and rice. Injury may be observed 

under hot, humid conditions. Always add 1% 

crop oil or 0.25% nonionic surfactant. 

A sequential treatment of Scepter PPI or 

preemergence followed by Scepter applied 

postemergence not only improves control of 

sicklepod but improves control of many other 

weeds as well. Follow rotational crop 

restrictions. 

Same as above. Addition of a spray-grade 

nitrogen fertilizer or ammonium sulfate may 

further improve weed control. Refer to label. 

Always add 1% crop oil concentrate. 


weeds and provide residual control of grasses 

and pigweeds. 

Broadleaves May be tank-mixed with other herbicides for 

increased weed spectrum. Consul label. 

Use on STS & STS/RR Soybeans. 

Many grasses and 


Hemp sesbania, 

most 

morningglories, 

smellmelon, 

pigweed and other 


Same as above Hemp sesbania, 

morningglories, 

smellmelon, 

pigweed, prickly 

sida, cocklebur, 


weeds 

Consult label for rotation interval. Can be a 

very effective treatment if timed correctly. 

Use 0.25 to 0.5% surfactant. 

Use 1.0 pt/A for sesbania and showy 

crotalaria that is actively growing but before 

flowering. Add surfactant as indicated on the 

label. Rate is dependent on weed spectrum 

and size. Consult label. Maximum rate per 

application=1.5 pt/A, per season=2 pt/A. 

Choose most serious weed pest and use the 

full rate of whichever herbicide is considered 

most effective plus 1.0 pt. of the herbicide. 

Read and follow label instructions. Add 

surfactant as indicated on the label. Storm at 

1.5 pt/A is equivalent to 1 pt of each herbicide 

in a tank-mix.



Broadcast 

POSTEMERGENCE 

Rate/Acre 

Active 

Ingredient 

Time To Apply 

rotary hoe As soon as soybeans are up to a stand, 

or before full emergence if soil crusts 

enough to prevent stand. Preemergence 

herbicides may remain more effective 

following rotary hoeing. 

Directed Spray 

2,4-DB 

0.2 lb 


4.5 - 8 oz 

Gramoxone Max 

2.5 - 5 oz 

Lorox 50DF 

0.5 - 1.0 lb 

OR 

Linex 4L 

0.5 - 1.0 pt 

+ 2,4-DB 

16.0 oz 

Lorox 50DF 

0.5 - 2.0 lb 

OR 

Linex 4L 

0.5 - 2.0 pt 


surfactant. 

Sencor 4F 

0.5 - 1.0 pt 

Sencor DF 

0.33 - 0.67 lb 


surfactant. 

Sencor 4L 

0.5 - 1.0 pt 

Sencor 75DF 

0.33 - 0.67 lb 

+ 2,4-DB 

16.0 oz 


surfactant. 

2,4-DB 

1.0 pt in 10 - 20 

gals of spray 

paraquat 

0.07 - 0.12 lb 

linuron 

0.25 - 0.5 lb 

+ 2,4-DB 

0.2 lb 

linuron 

0.25 - 1.0 lb 

metribuzin 

0.25 - 0.50 lb 

metribuzin 

0.25 - 0.50 lb 

+ 2,4-DB 

0.2 lb 

After soybeans 

are 8” tall 

Apply when 

grasses and 

pigweed are 

2-4" tall and 

soybeans at least 

8" 

After soybeans are 

8" tall and weeds 

less 6" tall 


8" and weeds less 

than 6" tall 


8" tall and before 

grasses are 1" tall 

and broadleaf 

weeds are 3" tall 

After soybeans 

are 8" tall 



83 


Small seedling 

grassy and broad- 

leaf weeds 

Annual 

morningglory 

and cocklebur, 

pigweed and 

prickly sida 

Seedling grasses 

such as seedling 

johnsongrass, 

crabgrasses, 

signalgrass, 


goosegrass 

Grasses and small 


such as crabgrass, 

cocklebur and 

hemp sesbania 



such as crabgrass, 

cocklebur, hemp 

sesbania 12"-15" 

tall, etc 

Grasses and 


such as cocklebur, 

dayflower, prickly 

sida, hemp 

sesbania and 

others 



Remarks 

Not effective if soil is damp or wet. Effective if 

soil is crusted. May be used repeatedly until 

3 rd set of true leaves are expanded. Soybean 

seedlings may be injured if hoed when fully 

turgid. 

Apply to lower 3" of soybean as a directed 

spray. Repeat once if necessary. Do not 

apply to soybeans showing root rot 

symptoms. 

Directed Spray Only. Good coverage 

necessary for control. Soybeans treated 

topically will be killed. Do not exceed 30 lbs. 

pressure. Do not graze treated areas. Apply 

low rate to weeds 2” tall and higher rate to 

grasses 2-4" tall and pigweeds 2-3" tall. 

Consult the label. Use 0.5% surfactant. 

Directed spray only. Severe injury to 

soybeans may occur if spray strikes mid to 

upper portions of soybean plants. Low rate 

for smaller weeds, higher rate for larger 

weeds. Consult the label. Use 0.5% 

surfactant. 

Directed spray only. Severe injury to 




weeds. Consult the label. Use 0.5% 

surfactant. 

Directed Spray Only. Spray only the lower 

1/4 to 1/3 of soybean plants. Do not apply to 

sensitive varieties. Higher rate required to 

control sesbania and prickly sida and to 

suppress morningglory, spotted spurge and 

wild poinsettia. Consult the label. Use 0.5% 

surfactant. 

Directed Spray Only. Severe injury to 




weeds. Use 0.5% surfactant.



Broadcast 

Pre-harvest Dessicants 

Aim 2EC 

1.4 oz 

Gramoxone Max 

5.4 - 10.7 oz 


8 - 16 oz 

Sodium Chlorate 

6 lb/gallon product 

1 gallon 

3 lb/gallon product 

2 gallons 

Rate/Acre 

Active 

Ingredient 

carfentrazone 

0.023 lb 

Paraquat 

0.126 - 0.25 lb 


Time To Apply 

After crop has 

matured and grain 

has begun to dry 

down 



84 


Better on vines 

than pigweed, 

sicklepod, etc. 

Indeterminate Desiccation of 

varieties: 65% of weeds and 

pods are mature or soybeans only. 

moisture content is 

30% or less. 

Determinate 

varieties: 50% leaf 

drop and remaining 

leaves are yellow. 

sodium chlorate 7 to 10 days before 

harvest 

Desiccation only. 

Level of weed 

control is affected 

by environmental 

conditions. 

Remarks 

More effective on annual vines. Do not apply 

within 3 days of harvest. Apply in 10 gallons 

by ground, 5 gallons by air. Use 1% crop oil 

concentrate (1qt/100 gals) 

Some drought stressed weeds will not be 

desiccated. Do not graze or harvest for hay. 

Apply in 10 gals by ground, or 5 gals by air. 

Do not apply within 15 days of harvest. 

Immature soybeans will be injured. Use 0.5% 

surfactant. 

Addition of surfactant or 0.5 to 1% COC may 

enhance results. Apply in 20 gallons by 

ground, 5 gallons by air. Check label for 

environmental conditions most favorable for 

dissication. Apply under high temperatures 

and humidity. 

SPOT TREATMENT - Johnsongrass, bermudagrass, itchgrass, other weeds. 

Glyphosate at 1 gal per 50 - 100 gal of water (1.25 - 2.5 oz per gallon of water). Spray weeds to near point 

of drip prior to the time soybeans set pods. Apply lower rate to johnsongrass and higher rate to 

bermudagrass. Note: Crop in the treated area will be killed (unless Roundup Ready). Take care to avoid 

drift outside target area for the same reason. Do not apply if crop growth has advanced beyond seed set. 

clethodim Select at 2.0 qt plus 1.0 gal of crop oil concentrate per 100 gal of water. 

fluazifop Fusilade DX at 2.0 qts plus 1.0 gal crop oil concentrate or 1.0 qt nonionic surfactant per 100 gallon of 

water. Apply to rapidly growing johnsongrass 1 - 2 ft tall. 

quizalop Assure II at 3.0 pts plus 1.0 gal crop oil concentrate or 1.0 qt nonionic surfactant per 100 gallons of water. 

sethoxydim Poast Plus at 1.5 gal or Poast at 1.0 gal plus 1 gal crop oil concentrate per 100 gal of water. Apply to 

rapidly growing johnsongrass 1 to 2 ft tall. 

RECIRCULATING SPRAYER - Johnsongrass control 

glyphosate Several formulations are available. Use 3 quarts per 20 gallons water - apply 15 - 20 gallons spray per 

acre to johnsongrass extending above soybean plants. Prevent glyphosate from contacting soybean 

foliage. 

ROPE WICK APPLICATORS - Johnsongrass control 

glyphosate Several formulations are available. Use 1 gallon per 2 gallons of water. Rope wicks should remain moist 

for best activity. Two passes of the rope wick are better than one. The second pass should be made in 

the opposite direction to the first.

SUGARCANE WEED CONTROL 

85 


To calculate band rates of herbicides, use the formula provided below. Soil texture, rainfall, temperature 

and herbicide rate can affect the level and duration of weed control obtained. On average, herbicide 

applied to the soil at the higher end of the rate range will provide residual weed control for about 60 days. 

When weeds are present and postemergence herbicides are used, a high quality non-ionic surfactant with 

a minimum of 80% active ingredient or a crop oil concentrate containing 15% to 20% emulsifier should in 

most cases be added to the finished spray solution. The amount of surfactant and crop oil concentrate 

needed can vary depending on herbicide and is specified in each section of this guide. 

Tables showing weed control estimates for herbicides used in sugarcane are provided at the end of this 

weed control guide. Values are based on research and field experience and represent what can be 

expected around 35 days after application of preemergence herbicides and 21 days after application of 

postemergence herbicides at the high end of the rate range. Additional information related to weed 

management for sugarcane and other crops grown in Louisiana can be viewed at 

www.agronomy.lsu.edu/weedscience/index.asp. 

Conversion of Broadcast Rate to Band Rate 

To calculate band rate per traveled acre for a liquid or dry formulation use the following formula: 

Band width in inches X Broadcast RATE = Band RATE per 

Row width in inches per acre traveled acre 

AT PLANTING PREEMERGENCE WEED CONTROL 

Sugarcane is planted following the spring/summer fallow using whole stalks or cut stalks (billets). Weeds not 

controlled at planting have enough time before the first killing frost to reestablish and produce rhizomes or seed. If 

this occurs, efforts to reduce weed populations during the fallow period are nullified. Herbicide may be applied at 

planting on a band to the top of the row or broadcast. A broadcast application will help to reduce encroachment of 

weeds from the row middles. Herbicide should be applied immediately after the row has been rolled or packed. A 

follow up application of herbicide will be needed when preemergence herbicides are applied in July and 

August to prevent reestablishment of summer weeds and to control winter weeds. See “Single Application 

vs. Split Application Programs” and “Postemergence Weed Control (September-October)” at the end of this 

section.



Broadcast 

AAtrex 4L, Atrazine 4L 

2.0 – 4.0 qt OR 

AAtrex Nine-O, 

Atrazine 90DF, 90WDG 

2.22 – 4.44 lb 

Command 3ME 

2.66 – 3.33 pt 

Direx 4L, 2.4 – 3.0 qt 

OR Direx, Karmex 80DF 

3.0 – 3.75 lb 

DuPont K-4 60DG 

3.75 – 4.0 lb 

Prowl, Pendimax, 

Stealth, Pendimethalin, 

Pendant, Acumen 

(3.3EC formulations) 

2.4 – 3.6 qt OR 

Prowl H2O 3.8CS 

2.1 – 3.1 qt 

Sencor 75DF, 

Metri 75DF 

2.0 - 4.0 lb 

Sinbar 80WP 

1.0 – 1.5 lb except 

1.0 lb on very sandy 

soils 

Spartan 4F 

10.0 – 12.0 oz 

Treflan, Trifluralin, Trilin, 

Tri-4, Trific, Treflan HFP 

(4EC formulations) 

2.0 qt 

Valor SX 51WG 

6.0 – 8.0 oz 

Rate/Acre 

Active 

Ingredient 

atrazine 

2.0 – 4.0 lb/A 

clomazone 

1.0 – 1.25 lb/A 

diuron 

2.4 – 3.0 lb/A 

hexazinone 

0.50 – 0.53 lb/A 

plus diuron 1.75 

– 1.87 lb/A 

pendimethalin 

2.0 – 3.0 lb/A 

metribuzin 

1.5 – 3.0 lb/A 

terbacil 

0.8 – 1.2 lb/A 

sulfentrazone 

0.313 – 0.375 

lb/A 

trifluralin 

2.0 lb/A 

flumioxazin 

0.188 – 0.25 

lb/A 


(see “Weed Control with 

Sugarcane Herbicides” 

section) 

Annual summer broadleaf 

weeds and winter grass and 


Seedling johnsongrass, 

itchgrass, browntop panicum, 

and other annual summer 

grasses 

Annual summer broadleaf 

weeds and winter grass and 



browntop panicum, and other 

annual summer and winter 

grass and broadleaf weeds 



and other annual summer 

grasses 

Seedling johnsongrass and 

other summer and winter 

grasses and broadleaf weeds 


other summer grasses and 


Annual summer and winter 




and other annual warm and 

cool season grasses 


grasses and broadleaf weeds 

86 


Remarks 

Use higher rate on heavy soils or when 

sugarcane is planted in July or August. 


sugarcane is planted in July or August. Addition 

of Direx/Karmex or Sencor/Metri DF can provide 

broadleaf weed control and bermudagrass 

suppression when applied prior to bermudagrass 

emergence and following a good fallow program. 


sugarcane is planted in July or August. 

Use of the higher rate can provide bermudagrass 

suppression when applied prior to bermudagrass 

emergence and following a good fallow program. 

Can be applied with Prowl or other pendimethalin 

product to improve itchgrass control. Velpar 2L 

at 1 qt/A and Direx 4L at 1.8 qt/A can be 

combined to closely represent the equivalent rate 

of 4 lb/A of DuPont K4. Within the next year a 

new formulation K-4 Max 80DG will be available. 

A 3 lb/A rate of K-4 Max is equivalent to a 4 lb/A 

rate of the original K-4 60 DG formulation. 

May be soil applied or incorporated. Use higher 

rate on heavy soils if surface applied when 

planting in July or August, or when itchgrass is a 

problem. Aatrex/Atrazine, Direx/Karmex, DuPont 

K-4, Sencor/Metri DF, or Spartan may be applied 

to the soil surface with Prowl or pendimethalin 

products for additional weed control. 

This product is safe to use on all soils and 

varieties of sugarcane. Use higher rate on heavy 

soils or when sugarcane is planted in July or 

August. Can provide suppression of 

bermudagrass at higher rates when applied prior 

to bermudagrass emergence and following a 

good fallow program. Addition of Prowl or other 

pendimethalin product will improve control of 

browntop panicum and itchgrass. 


sugarcane is planted in July - August. Can 

provide suppression of bermudagrass at higher 

rates applied prior to emerging bermudagrass 

and following a good fallow program. Addition of 

Prowl or pendimethalin products can increase 

control of browntop panicum and itchgrass. 

Use higher rate on heavy soils and when 

sugarcane is planted in July or August. Spartan 

may be applied more than once during the 

growing season but total usage per twelvemonth 

period can not exceed 12 oz/A. 

Roll or pack rows and incorporate herbicide 

within 24 hrs. of application. Avoid incorporation 

at a depth that will damage seed pieces. After 

incorporation, other herbicides should be applied 

to soil surface for broadleaf weed control. 

Must be applied prior to sugarcane emergence to 

avoid significant injury. Use higher rate on heavy 

soils or when sugarcane is planted in July or 

August.

87 


Single Application vs. Split Application Programs 

Herbicides applied at planting in July through early September will likely break by mid-October, and weeds will begin 

to emerge. A common practice is to reapply a broad spectrum preemergence herbicide in late October for residual 

control of winter weeds. When bermudagrass, johnsongrass and itchgrass problems are expected, a split application 

program with herbicide applied at planting and around 60 days later will be more effective than a single application. 

In some cases where split application programs are used, beds in the spring are essentially free of winter weeds. 

Programs that can be successful in controlling bermudagrass include split applications 60 days apart of Command 

3ME at 3.3 pt/A or DuPont K-4 at 4 lb/A followed by Sencor/Metri DF at 1.5 lb/A, Sencor/Metri DF at 2 lb/A followed 

60 days later with Sencor/Metri DF at 1.5 lb/A, and Treflan or other trifluralin product at 2 qt/A banded and 

incorporated followed by Sencor/Metri DF at 1.5 lb/A. Another option would be to apply herbicide at planting on a 

band and sink middles prior to the follow up application. This program will reduce cost up front but will require an 

additional tillage operation and cooperating weather conditions. If tillage cannot be performed encroachment of 

bermudagrass from the row middles can result in a severe weed problem the following spring. 

Postemergence Weed Control (September-October) 

Johnsongrass and Itchgrass. In early planted sugarcane, johnsongrass may reinfest fields prior to the winter 

dormancy period. When applied in September or October to actively growing johnsongrass 12 to 18 inches tall and 

above the crop canopy, Asulox/Asulox XP/Asulam at 3 qt/A or Envoke at 0.2 oz/A plus Asulox/Asulox XP/Asulam at 2 

qt/A plus nonionic surfactant at 1 to 2 qt/100 gal of water or crop oil concentrate at 4 qt/100 gal of water has 

controlled johnsongrass and reduced reinfestation the following spring. Asulox/Asulox XP/Asulam alone and with 

Envoke also controls large itchgrass (more than 6 inches). For additional information on Asulox/Asulox XP/Asulam 

and Envoke see the “Postemergence Control Programs for Johnsongrass and Other Weeds” section. 

Purple and Yellow Nutsedge. To control nutsedge in early planted sugarcane apply Permit at 1.0 to 1.33 oz/A or 

Envoke at 0.2 oz/A with nonionic surfactant at 1 to 2 qt/100 gal of water or crop oil concentrate at 4 qt/100 gal of 

water. Activity for both herbicides is slow, and four weeks may be needed to maximize control. Sugarcane is tolerant 

to overtop application of Permit. No more than three applications of Permit can be made per year and no more than 

2.33 oz should be applied per acre per year. Envoke can cause some yellowing and white banding on sugarcane 

leaves as well as slight stunting, but no negative effect on sugarcane growth and emergence in spring has been 

observed. Envoke also will provide some residual control of winter weeds. Other herbicides may be applied with 

Permit or Envoke for additional weed control. Yukon, a 67.5% DG premix of halosulfuron (the active ingredient in 

Permit) and dicamba (the active ingredient in Clarity/Vision) can provide control of both nutsedge and broadleaf 

weeds. A 4 oz/A rate of Yukon is equivalent to a 0.67 oz/A rate of Permit and a 4 oz/A rate of Clarity/Vision. For 

additional information on Permit and Envoke see the “Postemergence Control Programs for Johnsongrass and Other 

Weeds” section. 

Broadleaf Weeds. To control emerged broadleaf weeds, apply Weedmaster/Brash/Kambamaster at 0.5 to 1.0 qt/A, 

2,4-D (3.8L formulation) at 0.5 to 1.5 qt/A, or Clarity/Vision at 0.5 to 1.0 pt/A when air temperature is above 65 F. 

Information related to these herbicides and 2,4-D formulations is provided in the “Postemergence Weed Control After 

Layby” section. 

Succession Planting 

Herbicides listed in the “At Planting Preemergence Weed Control” section also may be used when sugarcane is 

succession planted. Rates may be reduced slightly (25%) due to later planting date and to minimize the chance of 

sugarcane injury. 

Use of Shielded or Hooded Sprayers 

Shielded application of glyphosate herbicide to row middles after planting or fall harvest has provided good to excellent 

control of emerged bermudagrass. Apply 2 to 3 qt/A of the 4.0 lb ai/gallon formulation or equivalent rate based on 

active ingredient for other formulations in 5 to 20 gal of water per acre as a shielded application to the row middles. 

Information on glyphosate formulations can be found in the “Fallow Weed Control” section. Severe injury will occur if 

glyphosate comes in contact with green sugarcane foliage. 

WINTER WEED CONTROL 

Preemergence (October-November) 

Apply Aatrex/Atrazine, Direx/Karmex, DuPont K-4, Sencor/Metri DF, or Sinbar to early harvested sugarcane or 

reapply to newly planted cane for preemergence control of winter grass and broadleaf weeds. Herbicide rates 

specified in the “At Planting Preemergence Weed Control” section can be reduced by 25% for the later applications. If 

weeds are present, non-ionic surfactant at 1 to 2 qt/100 gal or crop oil concentrate at 2 to 4 qt/100 gal should 

be added to the spray solution.

88 


Postemergence (January-March) 

Apply Weedmaster/Brash/Kambamaster at 0.5 to 1.0 qt/A, 2,4-D (3.8L formulation) at 0.5 to 1.5 qt/A, or Clarity/Vision 

at 0.5 to 1.0 pt/A after broadleaf weeds have emerged and when air temperature is above 65 F. The higher rate 

should be used when broadleaf weeds are large and clover or vetch is present. Information related to these 

herbicides and 2,4-D formulations is provided in the “Postemergence Weed Control After Layby” section. 

Aatrex/Atrazine, Direx/Karmex, DuPont K-4, Sencor/Metri DF, or Valor (winter killed sugarcane only) may be added 

to improve postemergence weed control and to provide soil residual activity. 

To control ryegrass and other winter annual grasses as well as some broadleaf weeds apply Gramoxone Max (3.0 lb 

ai paraquat/gal) at 2 pt/A or Gramoxone Inteon (2.0 lb ai paraquat/gal) at 3 pt/A plus nonionic surfactant at 1 to 2 

qt/100 gal or crop oil concentrate at 2 to 4 qt/100 gal prior to sugarcane emergence or when sugarcane has no more 

than 4 leaves. Aatrex/Atrazine, Direx/Karmex, DuPont K-4, Sencor/Metri DF, or Valor (if sugarcane has not 

emerged) may be added to improve burndown and provide soil residual activity. 

NOTE: Atrazine in surface water is currently being monitored in the Upper and Lower Terrebonne Basin 

area. If excessive levels are detected, it is possible that atrazine use in the area will be banned. 

SPRING PREEMERGENCE WEED CONTROL 

The preemergence herbicide programs described below should be implemented in late winter (February or early 

March) before weeds emerge. If weeds are present, non-ionic surfactant at 1 to 2 qt/100 gal or crop oil 

concentrate at 2 to 4 qt/100 gal should be added to the spray solution. Herbicides may be applied broadcast, 

but in most cases are banded on the top of the row when some cultivation of the row middles is planned. If scattered 

infestations of winter broadleaf weeds are present, Weedmaster/Brash/ Kambamaster at 0.5 to 1.0 qt/A, 2,4-D (3.8L 

formulation) at 0.5 to 1.5 qt/A, or Clarity/Vision at 0.5 to 1.0 pt/A can be added. The higher rate should be used when 

broadleaf weeds are large and clover or vetch is present. Information related to these herbicides and 2,4-D 

formulations is provided in the “Postemergence Weed Control After Layby” section. 



Broadcast 


2.0 – 4.0 qt 

OR 

AAtrex Nine-O, 

Atrazine 90 DF, 90 WDG 

2.22 – 4.44 lb 

Command 3ME 

2.66 – 3.33 pt 

Direx 4L, 2.4 – 3.0 qt 

OR 

Direx, Karmex 80DF 

3.0 – 3.75 lb 


3.75 – 4.0 lb 

Rate/Acre 

Active 

Ingredient 

atrazine 

2.0 – 4.0 lb/A 

clomazone 

1.0 – 1.25 lb/A 

diuron 

2.4 – 3.0 lb/A 

hexazinone 

0.5 – 0.53 lb/A 


– 1.87 lb/A 




section) 

Seedling broadleaf weeds and 

some annual grasses 



and other annual grasses 

Seedling broadleaf weeds and 




annual grass and broadleaf 

weeds. Addition of Prowl or 

pendimethalin products can 

improve itchgrass control. 

Remarks 

Use higher rate on heavy soils. Other herbicides 

should be applied for grass control. Atrazine in 

surface water is currently being monitored in 

the Upper and Lower Terrebonne Basin area. 

If excessive levels are detected it is possible 

that atrazine use in this area will be banned. 

Bleaching/whitening of sugarcane foliage can 

occur if crop is emerged at application. Can 

suppress bermudagrass regrowth at higher rates if 

applied with Direx/Karmex prior to bermudagrass 

emergence from the winter dormant period. If 

used at planting Command should not be 

reapplied in spring. 

Use higher rate on heavy soils. Other herbicides 

should be applied for grass control. 

For bermudagrass suppression apply higher rate 

prior to emergence at winter dormant period. Can 

be applied overtop of sugarcane until daily 

maximum temperatures for the week 

preceding application average 80 degrees F or 

greater. Velpar 2L at 1 qt/A and Direx 4L at 1.8 

qt/A can be combined to closely represent the 

equivalent rate of 4 lb/A of DuPont K4. Within the 

next year a new formulation K-4 Max 80DG will be 

available. A 3 lb/A rate of K-4 Max is equivalent to 

a 4 lb/A rate of the original K-4 60 DG formulation.



Broadcast 



Pendant, Acumen,3.3EC 

2.4 – 3.6 qt 

OR Prowl H2O 3.8CS 

2.1 – 3.1 qt 

Sencor 75DF, 

Metri 75DF 

2.0 - 4.0 lb 




2.0 qt 

Valor SX 51WG 

4.0 – 8.0 oz 

Rate/Acre 

Active 

Ingredient 

pendimethalin 

2.0 – 3.0 lb/A 

metribuzin 

1.5 – 3.0 lb/A 

trifluralin 

2.0 lb/A 

flumioxazin 

0.127 – 0.255 

lb/A 




section) 





other annual grass and 







89 


Remarks 

May be surface applied or soil incorporated. Use 

higher rate on heavy soils if surface applied or if 

itchgrass is a problem. Aatrex/Atrazine, 

Direx/Karmex, DuPont K-4, or Sencor/Metri DF 

may be applied to the soil surface with Prowl or a 

pendimethalin product for additional weed control. 

Safe to sugarcane on all soil types. Addition of 

Prowl or other pendimethalin product can improve 

control of browntop panicum and itchgrass. For 

bermudagrass suppression apply at the higher 

rate prior to emergence from the winter dormant 

period. 

Incorporate within 24 hours after application. Can 

provide suppression of bermudagrass at higher 

rates. Aatrex/Atrazine, Direx/Karmex, or 

Sencor/Metri DF may be applied to the soil 

surface for broadleaf weed control. 

Must be applied prior to sugarcane emergence 

to avoid significant injury. Can provide residual 

control when applied at 6 to 8 oz/A. 

POSTEMERGENCE CONTROL PROGRAMS FOR JOHNSONGRASS AND OTHER WEEDS 

Asulox/Asulox XP/Asulam Programs for Control of Johnsongrass and Other Grasses 

Asulox/Asulox XP/Asulam can be applied broadcast, banded or as a spot treatment. Non-ionic surfactant at 1 to 2 

qt/100 gal of water or crop oil concentrate at 1 gal/100 gal of water should be added to the spray solution. If 

water pH is above 9.0, addition of a buffer may be beneficial. At application, average air temperature should be at 

least 60 F with johnsongrass 12 to 18 inches tall and actively growing. DO NOT cultivate, fertilize or otherwise 

disturb the johnsongrass root system 7 days before or after Asulox/Asulox XP/Asulam application. With some 

variation caused by weather conditions, johnsongrass will be at the recommended treatment size in late March or 

early April. A 20-hour rain-free period following Asulox/Asulox XP/Asulam application may be needed to maximize 

control. 

First Application. Apply 4 qt/A Asulox/Asulox XP/Asulam broadcast (or the correct proportion if applying on a band) 

in 15 to 30 gal of water per acre. If applying on a band, outside nozzles should be mounted on drops and band width 

should be wide enough to ensure thorough wetting of foliage. Asulox/Asulox XP/Asulam applied at 3 to 4 qt/A also 

controls browntop panicum, foxtails, goosegrass and barnyardgrass/junglerice when 6 to 8 inches tall. Itchgrass less 

than 8 inches tall may be controlled with 4 qt/A. Vaseygrass that is less than 8 inches tall can be partially controlled 

with Asulox/Asulox XP/Asulam at 4 qt/A, but activity is very slow. 

Second Application. A second application of Asulox/Asulox XP/Asulam at 3 to 4 qt/A plus nonionic surfactant or 

crop oil concentrate can increase johnsongrass control, but may not increase yield over that obtained with a single 

Asulox/Asulox XP/Asulam application in March/April. This may be beneficial in the plant cane or first stubble crop to 

reduce infestations in subsequent crops. The second application of Asulox/Asulox XP/Asulam should be made to 

johnsongrass regrowth, usually about eight weeks after the first application. Sugarcane injury is more likely when 

Asulox/Asulox XP/Asulam is applied at 4 qt/A to sugarcane stressed from drought, excessive temperature, or flooded 

soils, especially after June 1. Therefore, the first application should be made as early as possible. 

Spot Application. The most accurate and economical method of spot treating is to use a calibrated sprayer at a 

constant speed with the operator turning the spray nozzles on and off as needed. If a high-volume “cattle gun” nozzle 

is used for spot treatment, apply a 2% solution of Asulox/Asulox XP/Asulam (2 gal of herbicide plus 98 gal of water). 

When using a high volume “cattle gun” nozzle, spray to wet foliage but do not drench because sugarcane injury can 

be greater compared with spot treating using a calibrated sprayer. 

Aerial Application. Asulox/Asulox XP/Asulam may also be applied by air using the same rates specified above. 

Spray volume should be a minimum of 5 gal per acre. After calculating the actual sugarcane acreage to be treated, 

acreage should be increased to account for ditchbanks and headlands also receiving application.

Envoke Programs for Control of Johnsongrass and Itchgrass 

90 


First Application. Envoke 75DF can be applied postemergence overtop to plant or ratoon cane up to 24 inches tall 

at 0.3 oz/A broadcast (or the correct proportion if applying on a band) or as a directed application at 0.3 to 0.6 oz/A to 

sugarcane 18 inches tall at layby. As a directed application spray, should be directed away from the upper plant 

parts (whorl) to minimize contact with the crop and to maximize contact with the target weeds. 

Envoke alone at 0.3 oz/A will suppress but not control of rhizome johnsongrass or large itchgrass. Combinations of 

Envoke with Asulox/Asulox XP/Asulam provide complementary broadleaf and grass weed control. Envoke at 0.3 

oz/A applied with Asulox/Asulox XP/Asulam at 2 qt/A (half rate) plus non-ionic surfactant or crop oil concentrate 

controls large rhizome johnsongrass (more than 18 inches) equal to or better than Asulox/Asulox XP/Asulam applied 

alone at 4 qt/A (full rate). Envoke at 0.2 oz/A applied with Asulox/Asulox XP/Asulam at 2 qt/A has provided control of 

large itchgrass (more than 6 inches) better than Asulox/Asulox XP/Asulam applied alone at 4 qt/A. 

Envoke applied overtop of sugarcane can cause some yellowing and white banding on leaves present in the whorl at 

application as well as slight stunting, but recovery is rapid, and no negative effect on sugarcane yield has been 

observed. For ground application, use a minimum of 10 gal of water per acre (broadcast basis). Higher spray 

volume of at least 20 gal per acre should be used for heavy weed infestations to ensure adequate spray coverage. 

Envoke can not be applied aerially. Do not apply Envoke to sugarcane under stress due to drought, standing 

water, heavy insect and/or disease pressure, or low soil fertility. As specified for Asulox/Asulox XP/Asulam, DO NOT 

cultivate, fertilize or otherwise disturb the johnsongrass root system 7 days before or after Envoke application. 

Nutsedge Control Programs 

Permit 75DF (halosulfuron) can be applied postemergence prior to planting or after crop emergence anytime during 

the growing season until row closure. Sugarcane is tolerant to overtop applications of Permit. No more than three 

applications can be made per year and no more than 2.33 oz should be applied per acre per year. Apply Permit at 

1.0 to 1.33 oz/A with non-ionic surfactant at 1 to 2 qt/100 gal of water or crop oil concentrate at 1 gal/100 gal of water. 

Activity of Permit is slow, and four weeks may be needed to maximize control. Other herbicides may be applied with 

Permit for additional weed control. Yukon, a 67.5% DG premix of halosulfuron (the active ingredient in Permit) and 

dicamba (the active ingredient in Clarity/Vision) can provide control of both nutsedge and broadleaf weeds. A 4 oz/A 

rate of Yukon is equivalent to 0.67 oz/A rate of Permit and a 4 oz/A rate of Clarity/Vision. 

Envoke at 0.2 oz/A with nonionic surfactant at 1 to 2 qt/100 gal of water or crop oil concentrate at 4 qt/100 gal of 

water also provides some control of nutsedge. Application over the top of the crop may not ensure adequate 

coverage of nutsedge growing under the crop canopy and can result in poor control. 

LAYBY PREEMERGENCE WEED CONTROL 

Herbicides at layby should be directed underneath the sugarcane canopy usually following the last cultivation and 

prior to weed emergence. Spray coverage of row tops and middles is critical to provide weed control until harvest. 

Directed application is necessary to increase herbicide coverage of smaller emerged weeds not destroyed by tillage 

and to avoid contact of newly emerging sugarcane leaves that can result in injury with some herbicides. If small 

weeds are present nonionic surfactant at 1 to 2 qt/100 gal or crop oil concentrate at 2 to 4 qt/100 gal should 

be added to the spray solution when using herbicides with postemergence activity. For morningglory (tie-vine) 

control, delaying herbicide application until after the layby cultivation can extend the period of residual weed control 

and will decrease the potential for crop injury with certain herbicides. 



Broadcast 


2.0 – 4.0 qt 

OR 

AAtrex Nine-O, Atrazine 

90DF, Atrazine 90WDG 

2.22 – 4.44 lb 

Rate/Acre 

Active 

Ingredient 

atrazine 

2.0 – 4.0 lb/A 




section) Remarks 

Seedling broadleaf weeds 

and some annual grasses 

Use higher rate on heavy soils and where 

morningglory (tie-vine) control in excess of 45 days 

is needed. Can provide residual morningglory 

control later into the season when application is 

delayed until late May or early June. Other 

herbicides should be applied for grass control.



Broadcast 

Direx 4L 

2.4 – 3.0 qt 

OR 

Direx 80DF, Karmex 

80DF 3.0 – 3.75 lb 


2.0 – 3.0 lb 



Pendant, Acumen 

(3.3EC formulations) 

2.4 – 3.6 qt 

OR 


2.1 – 3.1 qt 

Sencor 75DF, 

Metri 75DF 

2.0 – 4.0 lb 

Spartan 4F 

10.0 – 12.0 oz 




2.0 qt 

Valor SX 51WG 

3.0 – 8.0 oz 

Rate/Acre 

Active 

Ingredient 

diuron 

2.4 – 3.0 lb/A 

hexazinone 

0.27 – 0.4 lb/A 


– 1.4 lb/A 

pendimethalin 

2.0 – 3.0 lb/A 

metribuzin 

1.5 – 3.0 lb/A 

sulfentrazone 

0.313 – 0.375 

lb/A 

trifluralin 

2.0 lb/A 

flumioxazin 

0.096 – 0.255 

lb/A 




section) Remarks 









other seedling grass and 


91 


Apply as a directed treatment when sugarcane is 

30 inches or taller. Injury can occur if herbicide 

contacts newly emerging sugarcane leaves. Other 

herbicides should be applied for grass control. 

Apply as a directed treatment when sugarcane is 

30 inches or taller. Injury can occur if herbicide 

contacts newly emerging sugarcane leaves. If 

DuPont K-4 was applied in the spring do not 

apply more than 2 lb/A at layby. Allow 8 weeks 

between spring and layby applications. Addition 

of Prowl or other pendimethalin product can 

improve itchgrass control. Velpar 2L at 0.8 qt/A and 

Direx 4L at 1.4 qt/A can be combined to closely 

represent the equivalent rate of 3 lb/A of DuPont 

K4. Within the next year a new formulation K-4 

Max 80DG will be available. A 3 lb/A rate of K-4 

Max is equivalent to a 4 lb/A rate of the original K-4 

60 DG formulation. 

May be surface applied or soil incorporated. Use 

higher rate if surface applied or if itchgrass is a 

problem. Aatrex/Atrazine, Direx/Karmex, DuPont 

K-4, Sencor/Metri DF, or Spartan may be applied 

with Prowl or other pendimethalin product for 

additional weed control. Application of these 

herbicides could be delayed to extend the period of 

residual weed control. 

Safe to use on all soils and varieties of sugarcane. 

Addition of Prowl or other pendimethalin product 

can improve control of browntop panicum and 

itchgrass. 

Broadleaf weeds Use high rate on heavy soils and where 

morningglory (tie-vine) control in excess of 45 days 

is needed. Injury can occur if herbicide contacts 

newly emerging sugarcane leaves. Other 

herbicides should be applied for grass control. 

Spartan can be applied more than once during 

the growing season but total usage per twelvemonth 

period can not exceed 12 oz/A. 




Incorporate within 24 hours after application. 

Aatrex/Atrazine, Direx/Karmex, DuPont K-4, 

Sencor/Metri DF, or Spartan may be applied to the 

soil surface for broadleaf weed control. Application 

of these herbicides could be delayed to extend the 

period of residual weed control. 

Broadleaf weeds Apply only as a directed treatment after 

sugarcane is at least 24 inches in height and 

has begun to joint. Spray solution should 

contact no more than the lower six inches of 

sugarcane plants. At the 3 to 4 oz/A rate good 

control of emerged morningglory can be obtained. 

If long term control is desired 6 to 8 oz/A should be 

applied. Other herbicides should be applied for 

grass control. Valor can be applied at a maximum 

rate of 12 oz/A per crop year. 

POSTEMERGENCE WEED CONTROL AFTER LAYBY 

Rainfall combined with high soil temperature contributes to rapid degradation and loss of weed control from 

herbicides applied at layby. Grass weeds emerging after layby generally do not reduce sugarcane yield or interfere 

with harvest. Morningglory or tie-vines, however, can cause significant problems at harvest, particularly when the 

chopper harvester is used. To control morningglory and other broadleaf weeds, herbicides can be applied over the

(Cont’d) POSTEMERGENCE WEED CONTROL AFTER LAYBY 

92 


crop canopy by air or by ground sprayer, or herbicides can be directed underneath the crop canopy using a high 

clearance sprayer. When crop injury from the herbicide is not of concern, coverage of the entire morningglory plant 

with spray solution will provide more consistent control. Non-ionic surfactant at 1 to 2 qt/100 gal or crop oil 

concentrate at 2 to 4 qt/100 gal should be added to the spray solution. 

2,4-D is commonly applied at this time of the year, however, its use is restricted in some parishes. Check local 

restrictions before application. To avoid potential stand and yield loss in the subsequent plant cane crop, 2,4- 

D, Clarity, Vision, Weedmaster, Brash or Kambamaster should not be applied to seed cane sources closer 

than 7 weeks prior to harvest and planting. 



Broadcast 

2,4-D products 3.8L 

1.0 – 1.5 qt 

(see information below 

on 2,4-D formulations) 


2.0 – 4.0 qt 

OR 



2.22 – 4.44 lb 

Clarity 4L 

16.0 – 24.0 oz 

OR 

Vision 3.8L 

17.0 to 25.0 oz 

Envoke 75DF 

0.3 oz – 0.6 oz 

Permit 75DF 

0.67 – 1.33 oz 

Spartan 4F 

10.0 – 12.0 oz 

Valor SX 51WG 

3.0 – 8.0 oz 

Weedmaster/Brash/ 

Kambamaster 3.87L 

0.5 – 1.0 qt 

Gramoxone Max 3L 

1.33 – 2.7 pt 

OR 

Gramoxone Inteon 2L 

2.0 – 4.0 pt 

Rate/Acre 

Active 

Ingredient 

2,4-D 

0.47 – 1.42 lb/A 

atrazine 

2.0 – 4.0 lb/A 

dicamba 0.5 – 

0.75 lb/A 


0.014–0.028 lb/A 

halosulfuron 

0.031 – 0.062 

lb/A 

sulfentrazone 

0.313 – 0.375 

lb/A 

flumioxazin 

0.096 – 0.255 

lb/A 

2,4-D plus 

dicamba 

0.72 + 0.25 lb/A 

paraquat 

0.50 – 1.0 lb/A 




section) 

Morningglory (tie-vine) and 







broadleaf weeds, itchgrass 

and annual grasses, and 

purple and yellow nutsedge 

Remarks 

Apply higher rate if vines are climbing sugarcane 

plants. Complete control may take in excess of 5 

weeks. Surfactant can be added but is not 

required. Note restrictions on use in some parishes 

and on sugarcane used for seed. 

Can be applied overtop or directed before row 

closure occurs. Use higher rate if vines are 

climbing sugarcane plants. 




required. Note restriction on sugarcane used for 

seed. Can be used in parishes where 2,4-D use 

is restricted. 

Apply as a directed treatment. 

Purple and yellow nutsedge Apply until row closure occurs. The higher rate is 

needed for control. Can be applied with other 

herbicides. 




other broadleaf weeds and 



other annual broadleaf weeds 

Bermudagrass and small 


Apply as a directed treatment and use higher rate if 

vines are climbing sugarcane plants. Spartan can 

be applied more than once during the growing 

season but total usage per twelve-month period 

can not exceed 12 oz/A. If applied in the spring or 

at layby do not reapply. An interval of at least 120 

days between application and harvest is specified. 

Apply only as a directed treatment after 

sugarcane has begun to joint. Spray solution 

should contact no more than the lower six 

inches of sugarcane plants. At the 3 to 4 oz/A 

rate good control of emerged morningglory can be 

obtained. If long term control is desired 6 to 8 oz/A 

should be applied. Valor can be applied at a 

maximum rate of 12 oz/A per crop year. Treatment 

to harvest interval should be at least 90 days. 




required. Note restrictions on use in some parishes 

and on sugarcane used for seed. 

Application to the row middles in late June 

desiccates bermudagrass, and combined with 

shading from the crop canopy can reduce 

bermudagrass regrowth. Herbicide contact to 

young sugarcane tillers can cause significant injury. 

Application can reduce the amount of 

bermudagrass transported with seed cane.

93 


2,4-D Formulations 

Formulations of 2,4-D on the market include acid, amine salts and esters. Since only the acid form of 2,4-D is active 

in controlling weeds, the herbicide concentration on the label is provided in lb ae (acid equivalent)/gal instead of lb ai 

(active ingredient)/gal, as is the case with most other herbicides. Formulations of 2,4-D range from 1.74 to 5.6 lb 

ae/gal. These numbers are important in determining the amount of formulated product to apply per acre. The lower 

the lb ae/gal the more formulated product required. For example, a 32 fluid oz rate (1 qt/A) of a 3.8L formulation 

would correspond to 21.7 oz for a 5.6L formulation and 70 oz for a 1.74L formulation. Unison is an acid formulation 

of 2,4-D and contains 1.74 lb ae/gal. Although this formulation of 2,4-D is not volatile (susceptible to converting to a 

gas and moving off-target) it would still be susceptible to physical drift as a liquid. Caution should be used anytime 

2,4-D is applied near sensitive plants regardless of formulation. 

FALLOW WEED CONTROL 

The fallow year provides the opportunity to reduce weed problems by destroying rhizomes and decreasing weed 

seed reserves in the soil. Weed control programs during the fallow period can include use of tillage (plowing/disking) 

and herbicides. Frequent and timely cultivation, where weeds are destroyed and prevented from reestablishing can 

be an effective management tool if weather permits. Tillage, especially tillage just prior to planting, can reduce soil 

moisture in the seedbed, which in dry years can hinder plant cane emergence and growth. Another option in fallow 

fields would be a no-till program where seedbeds are not disturbed until planting and where glyphosate herbicide is 

used to kill both the sugarcane and weeds. Several herbicides are labeled for use in fallowed sugarcane fields and 

can be used in no-till and conventional programs in conjunction with or as a substitute for fallow plowing. If small 

weeds are present at application non-ionic surfactant at 1 to 2 qt/100 gal or crop oil concentrate at 2 to 4 

qt/100 gal should be added to the spray solution when using herbicides that have postemergence activity. 

Fallow Preemergence 

After bedding and at least 60 days prior to the anticipated planting date, apply preemergence herbicides to a weed 

and clod-free bed. Packing of the row top prior to application may improve weed control. 



Broadcast 


2.0 – 4.0 qt 

OR 



2.22 – 4.44 lb 

Direx 4L 

2.4 – 3.0 qt 

OR 

Direx 80 DF, Karmex 80 

DF 

3.0 – 3.75 lb 


3.75 – 4.0 lb 

Prowl 3.3EC 

3.0 qt 

OR 


2.6 qt 

Rate/Acre 

Active 

Ingredient 

atrazine 

2.0 – 4.0 lb/A 

diuron 

2.4 – 3.0 lb/A 

hexazinone 

0.50 – 0.53 lb/A 


– 1.87 lb/A 

pendimethalin 

2.5 lb/A 




section) 

Broadleaf weeds and some 


Remarks 

Use higher rate on heavy soils and where control in 

excess of 45 days is needed. 

Broadleaf weeds Use higher rate on heavy soils and where control in 

excess of 45 days is needed. 



annual grass and broadleaf 

weeds 



other annual grasses 

Can provide suppression of bermudagrass. Apply 

to a clean seedbed at least 60 days prior to 

planting. Can be reapplied at planting but no more 

than 11.25 lbs can be applied per acre per year. 

Velpar 2L at 1 qt/A and Direx 4L at 1.8 qt/A can be 

combined to closely represent the equivalent rate 

of 4 lb/A of DuPont K4. Within the next year a new 

formulation K-4 Max 80DG will be available. A 3 

lb/A rate of K-4 Max is equivalent to a 4 lb/A rate of 

the original K-4 60 DG formulation. 

Apply to clean seedbed at least 60 days prior to 

planting. Deep incorporation (4 inches) by plowing 

or rotary tiller will increase the control of rhizome 

johnsongrass and bermudagrass. Atrazine, 

Direx/Karmex, or DuPont K-4 may be applied 

preemergence for broadleaf weed control.

(Cont’d) FALLOW WEED CONTROL 

94 


Fallow Postemergence (Glyphosate and Glyphosate Mixtures) 

Postemergence herbicides should be applied to actively growing weeds. Several formulations of glyphosate are on 

the market with the most common being 4L and 5.5L formulations. The lower the active ingredient the more 

formulated product required. A 32 oz rate (1 qt/A) of a 4L formulation would correspond to 25.6 oz for a 5L 

formulation and 23.3 oz for a 5.5L formulation. Some glyphosate formulations contain surfactant but others do not. 

The herbicide label should be consulted concerning the need for surfactant. Apply glyphosate in 10 to 20 gal of water 

per acre for ground application and 3 to 5 gal of water per acre for aerial application. 

Johnsongrass and Other Weeds. For most applications, rates of 1 to 2 qt /A of the 4L glyphosate formulation is 

sufficient. Do not cultivate for 7 days after application to allow adequate time for the glyphosate to be taken into the 

plant and moved to underground rhizomes. Under heavy weed infestation, 2-to3-weeks between glyphosate 

application and planting will allow time for johnsongrass to desiccate and will promote more efficient opening of rows 

and covering of planted sugarcane. When applying 2,4-D in combination with glyphosate for additional broadleaf 

weed control use the high end of the glyphosate rate to avoid a possible reduction in grass control (antagonism). 

Aatrex/Atrazine at 1 to 2 qt/A, Aim 2EC at 1 to 2 oz/A, and Valor at 3 to 4 oz/A can be applied to control broadleaf 

weeds and in particular morningglory (tie-vine). The higher rates should be applied to control large vining weeds. 

Aatrex/Atrazine and Aim can be applied any time during the fallow period. Valor can be applied from 2 weeks prior to 

planting to before sugarcane emerges. Some residual weed control can be expected with Aatrex/Atrazine and Valor, 

but Aim has no soil residual activity. Non-ionic surfactant at 1 to 2 qt/100 gal or crop oil concentrate at 2 to 4 qt/100 

gal should be added to the spray solution. If Aim or Valor is applied with glyphosate and surfactant is already present 

in the glyphosate formulation additional surfactant is not needed. 

Bermudagrass. In fields where bermudagrass population is high, tillage in combination with glyphosate is most 

effective. Apply 2 to 3 qt/A of the 4L glyphosate formulation for control of bermudagrass with less than 8-inch 

runners. Retreatment with 2 to 3 qt/A may be necessary to maintain control. Do not cultivate for 7 days after 

application to allow adequate time for the glyphosate to be taken into the plant and moved to underground rhizomes. 

Under heavy weed infestation, 2-to-3 weeks between glyphosate application and planting will allow time for 

bermudagrass to desiccate and will promote more efficient opening of rows and covering of planted sugarcane. 

Multiple applications of glyphosate are more effective in controlling bermudagrass than a single application. 

Purple and Yellow Nutsedge. Permit at 1.0 to 1.33 oz/A and Envoke at 0.15 to 0.2 oz/A applied with non-ionic 

surfactant at 1 to 2 qt/100 gal of water or crop oil concentrate at 4 qt/100 gal of water will provide some control of 

nutsedge. The higher rate is needed when nutsedge is large and the population is dense. For best results herbicide 

application should be made when nutsedge is around 6 inches tall. If application is delayed until nutsedge forms a 

dense mat on the soil surface a sizeable tuber population will have developed underground and control will be 

reduced. Permit and Envoke can be applied with glyphosate products without negatively affecting grass control and 

additional surfactant is not needed if surfactant is already present in the glyphosate formulation. If two applications of 

glyphosate are planned, Permit or Envoke should be applied with glyphosate in the first application. The follow-up 

application of glyphosate alone should be effective on nutsedge regrowth. Both Permit and Envoke have some soil 

residual activity but are more effective when applied postemergence. Yukon, a 67.5% DG premix of halosulfuron 

(the active ingredient in Permit) and dicamba (the active ingredient in Clarity/Vision) can provide control of both 

nutsedge and broadleaf weeds. A 4 oz/A rate of Yukon is equivalent to 0.67 oz/A rate of Permit and a 4 oz/A rate of 

Clarity/Vision. As also noted for glyphosate, do not cultivate for 7 days after application of Permit or Envoke to allow 

adequate time for movement of herbicide to underground nutsedge tubers. 

In situations where nutsedge and others weeds may interfere with row opening at planting, Gramoxone Max at 2 pt/A 

or Gramoxone Inteon at 3 pt/A plus non-ionic surfactant at 1 to 2 qt/100 gal or crop oil concentrate at 2 to 4 qt/100 gal 

can be applied 1 to 2 weeks before planting to desiccate above ground plant material. Because herbicide does not 

move to underground nutsedge tubers rapid reestablishment should be expected and Permit or Envoke application in 

September or October should be considered. See “Postemergence Weed Control (September-October)” in the “At 

Planting Preemergence Weed Control” section. 

Doveweed. Doveweed as well as many other members of the dayflower family are poorly controlled with glyphosate. 

In fallow programs where glyphosate is the only herbicide used for weed control, doveweed can form a dense mat 

across the row and can interfere with row opening at planting. Effective control of doveweed has been obtained with 

Gramoxone Inteon (3 pt/A), Valor (3 oz/A) and atrazine (3 to 4 qt/A) applied 1 to 2 weeks before planting. 

Gramoxone Inteon (2 pt/A) or Valor (2 oz/A) applied with atrazine (2 qt/A) is also effective. 

No-Till Fallow Program. Glyphosate at 1.5 to 2.5 qt/A (4L formulation) will control sugarcane up to 15 inches tall. 

Typically in a no-till program a second glyphosate application will be needed to control weeds and any sugarcane 

regrowth that might occur. It is important that the first glyphosate application be by the end of April to allow 

sugarcane to completely decompose before rows are worked at planting. In fields where bermudagrass population is 

high, a no-till program where only glyphosate is used would not be as effective as glyphosate plus tillage. 

Note: Glyphosate herbicides can be applied by air, but extreme caution should be used due to problems 

with off-target movement and damage to sugarcane and other crops in areas adjacent to treated fields.

DITCHBANK WEED CONTROL 

95 


Problem weeds such as johnsongrass, itchgrass, bermudagrass, poppingweed (Equisetum/horsetail) and Rubus 

species (briars) should be controlled on ditchbanks. This will aid in field drainage and prevent weed infestation into 

adjacent sugarcane fields. These recommendations are for non-irrigation, drainage ditch use only. DO NOT apply 

herbicides to a ditch when water is present unless specifically allowed, based on the herbicide label. Herbicides 

should be applied in a minimum of 20 gal of water per acre spray volume. 



Broadcast 

Various MSMA 

formulations, check 

labels for rate (if 6L 

material is used the rate 

is 2.68 qt) 

Crossbow 3L 

4.0 qt 

Direx 4L 

2.0 - 15.0 qt 

OR 

Direx 80DF, Karmex 

80DF 

2.5 - 18.75 lb 


3.75 – 4.0 lb 

Garlon 4L 

2.0 – 3.0 qt 

OR 

Garlon 3A 

2.7 – 4.0 qt 

Prowl 3.3EC 

3.0 – 4.0 qt 

OR 


2.6 – 3.5 qt 

Rate/Acre 

Active 

Ingredient 

MSMA 

4.0 lb/A 

2,4-D plus 

triclopyr 

2.0 plus 1.0 lb/A 

diuron 

2.0 – 15.0 lb/A 

hexazinone 

0.50 – 0.53 lb/A 


– 1.87 lb/A 

triclopyr 

2.0 – 3.0 lb/A 

pendimethalin 

2.5 – 3.3 lb/A 

Weeds Controlled (see 

“Weed Control with 


section) 

Johnsongrass and itchgrass 

Poppingweed, briars, 

and woody species 

Annual grass and broadleaf 

weeds 

Most ditchbank weeds 

including some control of 

poppingweed. Will not control 

rhizome johnsongrass or curly 

dock. Very slow activity on 

poppingweed. Inclusion of 2 

qt/A of a 4L glyphosate 

formulation OR 2.67 qt/A of a 

6L MSMA formulation has 

increased rhizome 

johnsongrass and curly dock 

control. 

Poppingweed, briars, and 

woody species 


itchgrass, and other annual 

grasses 

Remarks 

Apply and repeat as necessary. If surfactant is not 

present in the formulation, add nonionic surfactant 

at 1 qt/100 gal of water. If the objective of 

ditchbank weed control is to encourage 

bermudagrass growth for ditchbank stabilization, 

application of MSMA alone would be an excellent 

choice. Mixing can be a problem when MSMA is 

applied with some broadleaf herbicides. 

Best control obtained when applied to young 

poppingweed, less than 2 years old. For control of 

briars and smaller diameter woody species, apply 

at 1.0 to 1.5 gal/100 gal of water and add nonionic 

surfactant at 1 qt/100 gal of water. Apply in a 

spray volume of 40 to 60 gal per acre to 

thoroughly soak all stems and plant crowns at the 

soil line. This product contains 2,4-D and its 

use may be restricted in some state areas. 

Provides residual control of many annual weeds. 

Addition of nonionic surfactant at 1 to 2 qt/100 gal 

will increase contact activity on small, emerged 

weeds no more than 3 in tall. Herbicide activity 

will be improved if soil in the ditch is moist at 

application. Do not allow herbicide to contact roots 

of desirable plants when applied at higher rates. 

Use only on split ditches. Do not use on out-flow 

ditches or ditches not directly between two cane 

fields Apply in a spray volume of at least 40 gal 

per acre to thoroughly cover the soil and foliage 

and soak all stems and plant crowns at the soil 

line. Nonionic surfactant at 1 qt/100 gal. or crop 

oil concentrate at 1 gallon/100 gal. should be 

added. Hexazinone (Velpar) is extremely watersoluble 

and may move in ditches. Within the 

next year a new formulation K-4 Max 80DG will be 

available. A 3 lb/A rate of K-4 Max is equivalent to 

a 4 lb/A rate of the original K-4 60 DG formulation. 

Control is greater when applied to young 

poppingweed, less than 2 years old. For control of 

briars and smaller diameter woody species, apply 

at 1.5 pt/A of 4L formulation or 2 pt/A of 3A 

formulation plus nonionic surfactant at 1 to 2 

qt/100 gal of water. Apply in a spray volume of 40 

to 60 gal per acre to thoroughly soak all stems and 

plant crowns at the soil line. 

Apply in a minimum of 20 gal per acre spray 

volume prior to weed emergence; will NOT control 

emerged weeds. May apply with other labeled 

herbicides to provide residual activity.

(Cont’d) DITCHBANK WEED CONTROL 



Broadcast 

Roundup Original, 

Glyphomax Plus, 

Touchdown IQ, others 

(4L formulations) 

1.0 to 5.0 qt 

OR 

Roundup UltraMAX, 

others (5L formulations) 

0.8 to 4.0 qt 

OR 

Roundup Original Max, 

Roundup UltraMax II, 

Roundup WeatherMax , 

Touchdown Total, others 

(5.5L formulations) 

0.7 to 3.6 qt 

Weedmaster, Brash, 

Kambamaster 3.87L 

0.5 – 3.0 qt 

Rate/Acre 

Active 

Ingredient 

glyphosate 

1.0 – 5.0 lb/A 

2,4-D 

0.36 - 0.73 lb/A 

plus dicamba 

0.125 - 0.25 lb/A 

Weeds Controlled (see 

“Weed Control with 


section) 

Johnsongrass, itchgrass, and 

other weeds 

96 


Remarks 

Johnsongrass, itchgrass, and most other weeds 

are controlled at 1 to 2 qt/A of the 4L glyphosate 

formulation. Apply 2 to 3 qt/A for control of 

bermudagrass with less than 8 inch runners. 

Retreatment with 2 to 3 qt/A may be necessary to 

maintain bermudagrass control. Application with 

Direx or Karmex at 5.0 lb ai/A (see information on 

Direx/Karmex) or DuPont K-4 at 3.75 to 4 lb/A (see 

information on DuPont K-4) can increase initial 

control and provide extended control of many 

annual weeds. Do not allow herbicide to contact 

foliage of desirable plants. 

Broadleaf weeds Use 1 qt/A to control annual broadleaf weeds and 

1.0 to 3 qt/A for suppression of perennial weeds. 

This product contains 2,4-D and its use may be 

restricted in some areas of the state.

WEED CONTROL WITH SUGARCANE HERBICIDES 

Planted Fields – Preemergence Soil-Applied 

97 


The values listed in the tables below are estimates of weed control based on research and field experience and 

represent what can be expected with a specific herbicide or herbicide mixture at the high end of the rate range. 

Weed control estimates for preemergence soil-applied herbicides are for 28 to 35 DAT (days after treatment). Weed 

control values are on a scale from 0 to 10 with 0 = no control and 10 = complete or 100% control. 

PLANTED FIELDS – Preemergence Soil-Applied Herbicides (28 to 35 DAT) 

Herbicide 

Seedling 

Johnsongrass 

Rhizome 

Johnsongrass 

Itchgrass 

(Raoulgrass) 

Bermudagrass* 

Atrazine 3 0 2 0 4 6 8 9 2 8 9 

Command 8 2 8 6 8 8 3 3 2 7 2 

Command plus Direx 9 2 8 8 9 9 6 8 2 7 8 

Direx/Karmex 7 0 5 1 6 7 6 8 2 7 8 

DuPont K-4 8 2 7 7 8 9 7 8 5 8 8 

Prowl/others 8 5**** 8 2 8 9 2 2 3 6 2 

Prowl plus DuPont K-4 8 2 8 5 8 9 7 8 3 7 8 

Prowl plus 

Sencor/Metri DF 

Browntop Panicum 

Annual Grasses 

Morningglory 

(Tie-vines) 

Other Broadleaf 


Nutsedges 

Winter Grasses** 

Winter Broadleaf 

Weeds*** 

9 2 8 5 9 9 8 9 3 8 8 

Sencor/Metri DF 9 0 2 5 6 9 8 9 3 8 8 

Sinbar 9 0 2 6 3 9 7 7 3 6 5 

Spartan 4 0 2 0 3 4 9 8 7 4 8 

Treflan/others**** 

9 5 9 6 9 9 2 2 5 8 2 

Valor 3 0 2 0 3 4 8 9 2 8 9 

*Control level expected when applied at planting prior to weed emergence and following a good fallow program or when applied in 

late winter prior to weed emergence from the winter dormant period. 

**Includes ryegrass, rescuegrass, and timothy grass. 

***Includes sowthistle, wild geranium, and clovers. 

****Herbicide must be incorporated to obtain this level of control.


Planted Fields - Postemergence Foliar-Applied 

98 




Weed control estimates for postemergence foliar-applied herbicides are for 14 to 21 DAT (days after treatment). 

Weed control values are on a scale from 0 to 10 with 0 = no control and 10 = complete or 100% control. 

PLANTED FIELDS – Postemergence Foliar-Applied Herbicides (14 to 21 DAT) 

Herbicide 

Seedling 

Johnsongrass 

Rhizome 

Johnsongrass 

Itchgrass 

(Raoulgrass) 

Bermudagrass 

Asulox/Asulam 8 7 7 2 8 9 0 0 0 5 0 

Atrazine 2 0 2 0 2 7 9 8 4 6 7 

Clarity/Vision 0 0 0 0 0 0 8 9 3 0 9 

Direx/Karmex 6 2 5 0 5 8 8 8 3 6 8 

Envoke + Asulox/Asulam 8 7 9 2 8 9 6 8 7 7 7 

Glyphosate herbicides 

(hooded application) 

Gramoxone Max / 


9 

9 

9 

8 


9 


9 

Morningglory 

(Tie-vines) 



8 4 8 6 8 9 8 8 2 8 8 

Permit 0 0 0 0 0 0 0 0 8 0 0 

Spartan 2 0 2 0 2 4 9 8 7 3 8 

Valor 2 0 2 0 3 4 9 8 2 3 9 

Weedmaster/Brash/ 

Kambamaster 

0 0 0 0 0 0 9 9 3 0 9 

2,4-D 0 0 0 0 0 0 9 9 3 0 9 

*Includes ryegrass, rescuegrass, and timothy grass. 

**Includes sowthistle and wild geranium. 

6 

7 

Nutsedges 

6 

Winter Grasses* 

8 

Winter Broadleaf 

Weeds** 

8


99 


Fallowed Fields - Preemergence Soil-Applied and Postemergence Foliar-Applied 



Weed control estimates for preemergence soil-applied herbicides are for 28 to 35 DAT (days after treatment) and 

weed control estimates for postemergence foliar-applied herbicides are for 14 to 21 DAT. Weed control values are 

on a scale from 0 to 10 with 0 = no control and 10 = complete or 100% control. 

FALLOWED FIELDS – Preemergence Soil-Applied (28 to 35 DAT) and Postemergence Foliar-Applied (14 to 21 

DAT) Herbicides 

Herbicide 

Preemergence 

Seedling 

Johnsongrass 

Rhizome 

Johnsongrass 

Itchgrass 

(Raoulgrass) 

Atrazine 3 0 2 0 4 6 8 9 2 

Direx/Karmex 7 0 5 1 6 7 6 7 2 

DuPont K-4 8 2 7 7 8 9 7 8 5 

Prowl/others 8 8* 8 6* 8 9 2 2 3* 

Postemergence 

Aim 0 0 0 0 0 0 9 8 0 

Atrazine 2 0 2 0 2 7 9 8 4 

Envoke 7 4 8 1 7 9 6 8 7 

Glyphosate herbicides 9 8 9 7 9 9 5 8 5 

Gramoxone Max / Gramoxone Inteon 8 4 8 6 8 9 8 8 2 

Permit 0 0 0 0 0 0 0 0 8 

Valor 2 0 2 0 3 4 9 8 2 

Weedmaster/Brash/Kambamaster/ 

2,4-D/Clarity/Vision 

*Herbicide must be incorporated to obtain this level of control. 

Bermudagrass 



Morningglory 

(Tie-vines) 



0 0 0 0 0 0 9 9 3 

Nutsedges

Rate of 

Formulated 


Broadcast 

Artichokes 

Kerb 50 W 

4-8 lb 

Asparagus 

Direx 4 L 

1.5 – 3 pt light 

3-6 pt clay 

Karmex 80 DF 

Direx 80 DF 

1-2 lb light 

2-4 lb clay 

Rate/Acre 


pronamide 

2-4 lbs 

diuron 

0.75 – 3 lbs 

Fusilade DX fluazifop-P-Butyl 

0.375 – 1.5 pt 0.1-0.375 lb 

+ 1-2 pts COC/25 

gals. 

or 0.5 – 1 pt. NIS/25 

gals. 

Gramoxone Max 

1.3 pt 

+ NIS 16 – 32 

oz/100 gals 

or COC 1 gal/100 

gals 


2.5 pt 

Lorox DF 

Preemergence 

1-4 lb. 

Postemergence 

1-2 lbs. 

Poast 1.5 EC 

0.5-2.5 pts. 

+ 2 pt COC 

(1/3-2 oz/gal + 1/3 

oz. COC gal) 

paraquat 

0.49 lb 

linuron 

0.5-2 lbs. 

sethoxydim 

0.09 -0.47 lb. 

VEGETABLE CROPS 

Time To Apply 

Preemergence 

Apply after transplanting but 

before new shoots develop 

3-4 new leaves 

Postemergence 

Second applications maybe 

directed to soil surface 

between rows. 

100 




and annual grasses 

Preemergence 

Annual broadleaf 

No earlier than 4 weeks weeds and grass 

before spear emergence 

and no later than early spear 

emergence. 

Postemergence 

Early spear emergence; 

Second application 

immediately following 

harvest 

Postemergence Annual and 

perennial 

grasses 

Postemergence Emerged small 

annual broadleaf 


Top kill and 


perennials. 

Preemergence 

Established beds apply 

before cutting season 

Postemergence 

Newly planted crowns when 

ferns are 6”-18” stage. 

Established beds: 

Apply before weeds exceed 

4” in height 

Postemergence before 

grasses exceed height for 

treatments. Check label for 

the recommended time. 

Most small seeded 



Annual and 


Remarks 

60 days to harvest. Refer to label for 

plant back times for rotation crops. 

Do not apply to young plants during 

first growing season after setting or on 

plants with exposed roots. Check label 

for tank-mixes with other herbicides. 

Apply to actively growing grasses 

before they exceed the recommended 

growth stages shown on the label. 

One day to harvest. Do not make 

sequential applications less than 14 

day intervals. Do not apply more than 

3 pts per season. 

Use on asparagus at least 2 years old. 

Apply in a minimum of 20 gallons 

water/A to control emerged weeds 

before spears emerge or after last 

harvest. Do not apply within 6 days of 

harvest. 

Lorox can be used on newly planted 

crowns. Do not apply within one day 

of harvest. 

One day to harvest. Do not apply more 

than 5 pt/season. Poast plus crop oil 

concentrate should be used with 

caution when temperatures exceed 

90°F and the relative humidity is 60% 

or higher, or anytime temperature 

exceeds 100° F because of potential 

leaf injury.

Rate of 

Formulated 


Broadcast 

Asparagus (continued) 

Sencor 4 FL or 4 

DF 

2-4 pt. FL 

1.33 – 2.67 lb DF 

Sinbar WP 

Established beds 

1.5 – 2.5 lbs. 

Solicam DF 

2.5 – 5 lb. 

Rate/Acre 


metribuzin 

1-2 lb ai 

terbacil 

0.8 – 2 lbs. 

norflurazon 

2-4 lb. 

Snap Beans and Lima Beans 3,4,5,6,7 

Assure II , Targa 

6-12 oz 

+ COC 1% v/v 

4 qts/100 gals 

or NIS .25 v/v 

1 qt/100 gals 

(1 tbsp/gal + 2 ½ 

tbsp COC or 2 tsp 

NIS) 

Basagran 

1-2 pt 

Dual Magnum 


1-1.3 pt/A-coarse 

1.3-2 pt/A-med 

&fine 

Prowl 3.3EC 

Pendimax 3.3 

1.2-1.8 pts–lt 

1.8-2.4 pts-med 

1.8-3.6 pts-hvy 

Pentagon DG 

0.5-1.25 lb-coarse 

1.25-1.7 lb-med 

1.25-2.5 lb-fine 

quizalofop 

0.04 – 0.08 

bentazon 

0.5-1 lb 

s-metolachlor 

1-1.9 lb 

pendimethalin 

0.5-1.5 lb 

Time To Apply 

Preemergence 

Early spring before spears 

and ferns emerge 

Postharvest 

After last harvest of season 

Preemergence 

Apply prior to spear and 

weed emergence or to small 

weeds. 

101 







Preemergence Most small seeded 



Fair control of 

nutsedge. 

Post emergence Annual and 


Early post-emergence when 

weeds are small actively 

growing 

At planting or preplant 

incorporate in 

top 2” of soil 

2 Preplant 

incorporate 

Common purslane, 

velvetleaf, common 

ragweed, mustard, 

wild sunflowers, 

smartweed, hairy 

nightshade, 

cocklebur, giant 

ragweed, prickly 

sida, yellow 

nutsedge, & other 


Many small seeded 

grasses, yellow 

nutsedge and 

pigweed 


grasses and 

broadleaves, 

including annual 

spurge, reduction 

from competition 

from smartweed 

& velvetleaf 

Remarks 

Do not use on young plants during first 

growing season after setting crowns 

Do not use on areas where subsoil or 

roots are exposed. 

Use on plantings that have been 

established for at least one year. 

Check label for tank-mixes with other 

herbcides. 

Cleared on snap beans. Do not apply 

within 15 days of harvest. Maximum 

use rates are 14 oz/acre/season. 

Check label for rates of specific weeds 

and size at application. 

Will not control grasses. Apply to 

beans after two, fully expanded 

trifoliate leaves to minimize risk of 

damage. Do not apply to beans that 

have been subject to stress (hail, 

flooding, drought, injury from other 

herbicides or widely fluctuating 

temperatures). Rates are highly 

dependent on size and age of weeds. 

Check label for more specific rates. 

Two applications may be needed to 

control yellow nutsedge. Do not apply 

within 30 days of harvest. 

Incorporation increases the efficiency 

of Dual on yellow nutsedge. Check 

label for tank-mixes with other 

herbicides. 

If replanting is necessary, do not work 

soil deeper than the treated zone. Do 

not apply preemergence after planting 

(surface treatment) or serious injury 

can result. Check label for tank-mixes 

with other herbicides.

Rate of 

Formulated 


Broadcast 

Rate/Acre 


Snap Beans and Lima Beans (continued) 

Poast 

0.75-2.5 pts 

+ 2 pts COC 

(1/3-2 oz/gal + 

1.3 oz COC/gal) 

sethoxydim 

0.1-0.47 lbs 

+ 2 pts crop oil 

concentrate 

Aim 2EC, .75-1.5 oz Carfentrazone-ethyl 

40 DF at .33-1.0 oz 0.012 – 0.024 lb. 

+NIS @ 2 pt/100 or 

COC@1 gal/100 gal 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Sandea 75 DG 

0.5 to 0.7 oz. 

Treflan, HFP (4EC) 

Trifluralin 4EC 

Trilin 4EC 

4EC 

1.0 pt lt soil 

1.5 pt med–hvy soil 

Lima Beans 

glyphosate 

0.5-0.94 lb 

Halosulfuron-methyl at 

0.024 to 0.036 lb. 

trifluralin 

0.5-0.75 lb 

60 DF 

0.8 lb lt soil 

1.33 lb med-hvy soil 

Lasso or MicroTech alachlor 

1.5-2 qt-2.5-3.0 qt - 2.5-3.0 lb 

sand to clay 

Partner(WDG) 

3.8-4.2 lb-4.2-4.5 lbsand 

to clay 

Aim 2 EC 0.75-1.5 

oz 

Aim 40 DF .33-1 oz 

Pursuit 

3 ozs. 

Pursuit DG 

1.08 ozs 

Beets 3,4,7 

Pyramin DF 

4.6 lb.lt-med soil 

5.4 lb.hvy soil 

Carfentrazone-ethyl 

0.012 – 0.024 

imazethapyr 

0.047 lb 

pyrazon 

3.2-3.7 lb 

Time To Apply 

102 



Post emergence 

Annual and 

Before grasses exceed perennial grasses 

height recommended for 

treatments. Check the label 

for the recommended time. 

Do not apply Poast within 15 

days of harvest. 

Postemergence directed 

using hoods or shields. 

Postemergence 

Row middles only with a 

hooded sprayer 

Preemergence following 

planting but prior to 

cracking. 

Postemergence after 2 to 3 

trifoliate, prior to flowering. 

Most emerged 


Most emerged 

weeds. 

Nutsedge and other 


2 Preplant incorporate Small-seeded 

annual grasses, 

broadleaf weeds & 

seedl johnsongrass 

2 Preplant 

Incorporate 



Preplant 

Incorporate 

Preemergence 

After planting 

Preemergence 

after planting 

Postemergence within 2 

weeks after planting. 

Small seeded 

annuals 

Most emerged 


Several broadleaf 

weeds, including 

morningglory. 

Many small-seeded 

annual grasses & 


Remarks 

Adjust pressure (40-60 psi), spray 

volume (5-20 gal/A), and height of 

spray boom to ensure thorough 

coverage. Do not apply more than 4 

pts/A/yeaf due to possible injury. 

Poast plus COC should be used with 

caution at high temperatures and RH. 

Crops contacted will be injured. Most 

effective on weeds less than 4 in. tall. 

Does not control grasses. Can be 

tank mixed with other herbicides. 

Apply with a hooded or shielded 

sprayer or wiper in row middles, or 

use post-harvest. To avoid injury, 

keep herbicide off of foliage, shoots, 

stems, exposed roots or fruit. 

Preemergence applications will 

provide residual weed control. 

Temporary stunting may be seen, 

which may delay maturity. 

Incorporate thoroughly in top 2" of soil 

just before planting. Check label for 

tank-mixes with other herbicides. 

May delay maturity and/or reduce 

yields if cold, wet soil conditions occur 

after planting. CLEARED ON LIMA 

BEANS ONLY. Check label for tankmixes 





tank mixed with other herbicides. Use 

COC at 1 gal/100 gal. (1.3 oz/gal) or 

NIS at 2 pt/100 gal (0.33 oz/gal). 

May cause crop injury. Use at 

grower’s risk. May be tank-mixed with 

a grass herbicides or applied pree. 

after a ppi grass herbicide. 

If rainfall does not occur within 5-10 

days after treatment, beets should be 

irrigated or shallowly cultivated. 

Apply after beets have 2 expanded 

true leaves and before any weeds 

have more than 2 to 4 true leaves.

Rate of 

Formulated 


Broadcast 

Beets 3,4,7 (Continued) 

Ro-Neet 6-E 


4.7 pt-med 

5.3 pt-hvy 

Aim 2 EC 0.75-1.5 

oz 

40 DF .33-1.0 oz. 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Select at 6 - 8 oz + 

COC,1 gal/100 gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Stinger 3 EC 

0.5 pt 

Spin-Aid 

3-6 pt/A 

Rate/Acre 


cycloate 

3-4 lb 


0.012 – 0.024 

glyphosate 

0.5-0.94 lb 

clethodim 

0.094 - 0.125 lb 

clopyralid 

0.187 lb 

phenmedipham 

0.5-1.0 lb 

Time To Apply 

At planting; 2 Preplant incorporate. 



Postemergence 



Postemergence to actively 

growing grasses. Do not 

apply more than 8 oz/A in a 

single application. 

Postemergence when 

weeds are small 

Postemergence. Apply 60 

days before harvest. 

Cabbage, Cauliflower, Broccoli and Brussels Sprouts 3,4,5,6 (transplants) 

Treflan HFP (4EC), 


Trilin 4EC 

4EC 



Aim 2 EC,.75-1.5 oz 

40 DF .33-1.0 oz. 

NIS at 2 pt/100 gal 

COC, 1 gal/100 gal 

Goal 1.6E or 2XL 

Galligan 2 EC 

1.0 pt- coarse 

2.0 pts-med to fine 

trifluralin 

0.5-1.0 lb 

60 DF 




0.012 – 0.24 

oxyfluorfen 

0.25-0.5 lb 

2 Pretransplant 

incorporate 



103 






Most emerged 


Most emerged 

weeds. 

Annual and 

perennial 

grasses and annual 

bluegrass 

Remarks 


5-7 days before planting to reduce risk 

of temporary crop injury. 







Apply with a hooded sprayer in row 

middles, as shielded sprayer in row 

middles, as wiper applications in row 

middles or post harvest. To avoid 

severe injury to crop, do not allow 

herbicide to contact foliage, green 

shoots, stems, exposed roots or fruit 

of crop. Do not apply within 14 days 

of harvest 

Do not apply under stressed 

conditions or if rainfall is expected 

within 1 hour. Repeat applications no 

less than 14 days apart. 

Broadleaf weeds Apply to beets when weeds are small 

and actively growing. Will control 

most legumes. Do not apply within 30 

days of harvest 


weeds 

Small-seeded 

grasses, broadleaf 

weeds. 

Most emerged 


Pretransplant Pennsylvania 

smartweed, 

pigweed, purslane 

& some grasses 

Cabbage, Cauliflower, Broccoli & Brussels Sprouts 3,4,5,6 (direct-seeded) 



Trilin 4EC 

4EC 



trifluralin 

0.5-0.75 lb 

60 DF 



2 Preplant 

incorporate 




seedling 

johnsongrass 

Apply when beets are past the 4 to 6 

true-leaf stage and weeds 2-true-leaf. 


just before transplanting. Do not 

exceed the 2 pt/A rate. 




tank mixed with other herbicides. 

Use. (1.3 oz/gal) or (0.33 oz/gal). 

Apply in at least 20 gals. water/A. Do 

not exceed 40 psi pressure. 

Pre-transplant only: Transplant with 

minimal soil disturbance. May cause 

some leaf cupping. 


just before transplanting. Directseeded 

cole crops exhibit marginal 

tolerance to higher than 0.5 lb ai/A 

rates of trifluralin. Stunting or reduced 

stands may occur.

Rate of 

Formulated 


Broadcast 

Rate/Acre 


Time To Apply 

104 



Cabbage, Cauliflower, Broccoli & Brussels Sprouts 3,4,5,6,7 (direct-seeded), continued 

Dacthal 75WP 

6-8 lb lt soil 

8-10 lb med 

10-14 lb hvy 

Aim 2 EC 0.75-1.5 

oz 40 DF .33-1.0 

oz. 

DCPA 

4.5-10.5 


0.012 – 0.24 

Cabbage, Cauliflower & Broccoli only 

Poast 

0.5-1.5 pts 

+ 2 pts COC 

(1.3-2 oz/gal 

+ 1.3 oz COC/gal) 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Aim 2 EC,.75-1.5 oz 

40 DF .33-1.0 oz. 

+COC, 1.3 oz/gal or 

NIS at 0.33 oz/gal. 

Select 

6 - 8 oz 

+ COC at 1 gal/100 

gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Carrots 3,4,5 

Fusilade DX 

0.375-1.5 pt 

(6-12) ozs + 1-2 pts 

COC/ 25 gal 

OR 

0.5-1 pt NIS/25 gal 

Lorox DF 


2-2.5 lb med soil 

3.0 lb. hvy. soil 

Poast 

0.5-2.5 pt 

+2 pt COC 

(1.3-2 oz/gal 

+1.3 oz COC) 

sethoxydim 

0.09-0.28 lb 

+ 2 pt crop oil 

concentrate 

glyphosate 

0.5-0.94 lb 


0.012 – 0.24 

clethodim 

0.1 - 0.125 lb 

fluazifop 

0.1–0.375 lb 

linuron 

0.5-1.5 lb; 

sethoxydin 

0.09-0.47 lb 

Preplant, 

Preplant incorporate 



Before grasses exceed 

height recommended for 

treatment. Check label for 

recommended time of 

application. Do not apply 


Postemergence 


hooded sprayer. Do not 

apply within 14 days of 

harvest. 





weeds 

Most emerged 


Annual and 


and annual 

bluegrass 

Most emerged 

weeds. 

Most emerged 


Postemergence to actively Annual and 

growing grasses. For repeat perennial grasses 

applications, make on a 

minimum of 14-day 

intervals. 

Postemergence; 

apply to actively growing 

grasses before they exceed 

the recommended growth 

stages shown on the label. 

Preemergence, after 

planting. 

Postemergence, apply after 

carrots are 3” tall. 


grasses 


some grasses and 


Postemergence. Before Annual & perennial 

grasses exceed height grasses 

recommended for treatment. 

Check label for 


application. 

Remarks 

Apply in at least 20 gal water/A. A 

minimum of 1/3-1/2”of water is 

necessary to activate Dacthal within 3- 

5 days of application. If irrigation is 

unavailable, a shallow incorporation 

(1-2”) will aid in weed control. 







Adjust pressure (40-60 psi) spray 

volume (5-20 gals/A) and boom height 

to ensure thorough coverage. Do not 

apply more than 3 pts/A/yr. Do not 

apply if rainfall is expected within 1 

hour. Direct-seeded or transplant. 

Apply with a hooded sprayer or 

shielded sprayer or wiper applicators 

in row middles or post harvest. To 

avoid severe crop injury, do not allow 


shoots, stems, exposed roots or fruit. 




tank mixed with other herbicides 



within 1 hour. Do not apply within 30 

days of harvest. Do not apply more 

than 8 oz/A in a single application. 

Use sufficient spray volume (5-40 

gals/A) and pressure (40-60 psi) to 

ensure adequate coverage. Do not 

harvest carrots within 45 days after 

application. Do not exceed 48 oz. of 

Fusilade/acre/season. Do not apply to 

stressed grasses. Do not apply if 

rainfall is expected within 1 hour. 

Plant seed 1/2 inch deep. Do not 

apply when temperatures are above 

95°F. Apply to at least 3" crop and 

before grass is 2" and broadleaves 6". 

Be aware of replant restrictions. Do 

not tank-mix with other pesticides. 


volume (5-20 gal/A) and boom height 


apply Poast within 30 days of harvest. 

Do not apply more than a total of 3 

pt/A. Do not apply if rainfall is 

expected within 1 hour after 

application.

Rate of 

Formulated 


Broadcast 

Carrots 3,4,5 (continued) 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Sencor FL, DF 

0.33 lb. DF 

0.5 pt. FL 


Tri-4 HF (4EC) 


Trific 60DF 

Trilin 4 EC 

4EC 


1.5 pt med soil 

2.0 pt hvy soil 

Varsol 

40-60 gal. 

Corn, sweet 3,4 

AAtrex 80W 

Atrazine 80W 

2.5 lbs-coarse 

3.0 lbs-medium 

3.75 lbs-fine 

2.5 lbs-all soils 

+ 1.0 pt of NIS 

or 1.0 qt COC per 

25 gal. 

Rate/Acre 


glyphosate 

0.5-0.94 lb 

clethodim 

0.1 - 0.125 lb 

metribuzin 

0.25 lb. 

trifluralin 

0.5-1 lb 

60 DF 


1.33 lb med soil 

1.6 lb hvy soil 

stoddard 

solvent 

atrazine 

1.2-2.4 lb 

Time To Apply 

Postemergence 




growing grasses 

Postemergence. 

Apply after carrots reach 

the 5-6 leaf stage but before 

weeds are 1 inch high 

1 Preplant 

incorporate 

105 



Most emerged 

weeds. 

Annual and 


and annual 

bluegrass 


weeds 




seedling 

johnsongrass 

Remarks 









of harvest 






For repeat applications, make on a 

minimum of 14 day interval. 

Do not apply within 3 days after period 

of cool, wet or cloudy weather or crop 

injury will occur. Second application 

can be made after an interval of at 

least 3 weeks. Days to harvest – 60. 

Check label for crop rotation. 


just before planting. 

Postemergence Many annual Do not apply later than 6 weeks 

grasses & broadleaf before harvest. Apply before weeds 

weeds 

are 1" tall. Works best on warm sunny 

days. 

Preemergence-after 

planting, preplant 

incorporate. 

Postemergence 

Many smallseeded 

annual 

grasses & 


Apply to surface of freshly moist 

cultivated soil. Do not plant treated 

areas with any crop except corn or 

grain sorghum until the following 

year. 

Postemergence – Apply before corn 

is 12" in height and before broadleaf 

weeds and grasses reach 1.5”. Do 

not apply more than 2.5 lb ai/A per 

year.

Rate of 

Formulated 


Broadcast 

Corn, sweet 3,4 (continued) 

Atrazine 4L, 5L or 

90DF formulation 

3.2-4 pt 4L 

2.4-3.2 pt 5L 

1.8-2.2 lb 90DF 

2.4 pt 4L 

1.9 pt 5L 

1.3 pt WDG or 

90DF 

+ 

1 pt of NIS or 

1 qt COC per 25 

gal 

Basagran 

1.5-2 pts 


1.6 to 2.6 qt/A 

Bicep Lite II 

Magnum 

1.1 to 1.9 qt/A 


2.1-2.6 qt/A 

Bicep Lite II 

Magnum 

1.5 to 2.2 qt/A 


1.6 to 2.6 qt/A 

Bicep Lite II 

Magnum 

1.1 to 1.9 qt/A 

Lasso 

4EC or MT 

4 pt-lt soil; 

6 pt-med 

8 pt-hvy 

Partner WDG 

3 lb-lt soil; 

4 lb-med 

6 lb-hvy 

Rate/Acre 


atrazine 

1.6-2.0 lb 

preplant 

1.2 lb/A 

postemergence 

bentazon 

0.75-1.0 lb 

s-metolachlor + 

atrazine 

2.2 - 3.6 lb 

s-metolachlor 

+ atrazine 

2.9 to 3.6 lb 

2.25 to 3.3 lb 

s-metolachlor + 

atrazine 

2.2 - 3.6 lb 

alachlor 

2-4 lb 

Time To Apply 


planting 

or preplant incorporate 


Before corn reaches 12”, 

before pigweeds reach 6” 

and all other broadleaf 

weeds reach 4”, and 

grasses reach 1.5”. 

106 






Early post emergence Many broadleaf 

weeds in early leaf 

stage, including 

annual morningglory, 

cocklebur, 

velvetleaf, 

pennsylvania 

smartweed, prickly 

sida (teaweed), 

dayflower and 

ragweeds 

Postemergence; Apply 

before grass and broadleaf 

weeds pass 2 leaf stage 

and before corn exceeds 

5”. 

Preplant surface. 

Preplant incorporate. 

Preemergence 

Postemergence; Apply 

before grass and broadleaf 

weeds pass 2 leaf stage and 

before corn exceeds 5”. 

Preplant incorporate or 

preemergence after 

planting 



and before 


Weeds controlled 

by metolachlor + 

those controlled by 

atrazine 




Weeds controlled 

by metolachlor + 

those controlled by 

atrazine 



before broadleaf 

weeds. Weeds 

controlled by 

metolachlor + those 

controlled by 

atrazine 

Many smallseeded 


and broadleaf 

weeds. 

Remarks 

Check label for tank mixes with other 

herbicides. Herbicide residue may 

limit crop alternatives after harvest. 

This product may not be mixed, 

loaded or used within 50 ft of a well. 

Postemergence: Do not apply 

postemergence when crop is under 

stress from prolonged wet weather, 

cold, poor fertility, or other factors or 

when crop is wet and succulent from 

recent rainfall. Do not apply more 

than 2.5 lb ai/A/year. 

Addition of crop oil concentrate will 

increase control of morningglory, 

velvetleaf and ragweed. Two 

applications of Basagran 5-14 days 

apart may be necessary to control 

morningglories at the 4th leaf and 4" 

tall stage. Will not control grasses. 


herbicides. Do not apply more than 4 

pt/A per season. 

Do not exceed a total of 2.5 lb ai 

atrazine on a corn crop. Check label 

for rates. Herbicide residue may limit 

crop alternatives after harvest. Days 

to harvest-30. 

Apply before planting, at planting, or 

after planting before weeds and corn 

emerge. Do not exceed a total of 8 

qts/A of Bicep on a corn crop. 

Herbicide residue may limit crop 

alternatives after harvest. Consult 

label for approved tank-mixes. 

Do not exceed a total of 2.5 lb ai 

atrazine on a corn crop. Check label 

for rates. Herbicide residue may limit 

crop alternatives after harvest. Days 

to harvest-30. 

Apply to surface of freshly-cultivated 

soil. Do not forage or harvest 

immature corn for feed within 12 

weeks after treatment. Check label 

for tank-mixes with other herbicides.

Rate of 

Formulated 


Broadcast 

Corn, Sweet 3,4 (continued) 

Rate/Acre 


Outlook 

dimethenamid 

8-12 oz coarse soil 0.94 -1.5 lb/A 

8-12 oz medium soil 

12-16 oz fine soil 

Sempra, Sandea 

0.66 oz/A 

+ NIS at 1-2 

pts./100 gal. water 

or 1 gal./100 gal. 

water 

Bullet 

2.5 qt – coarse soil 

3.5 qts – medium 

4.0-4.5 qts - fine 

Dual Magnum 


1 – 2 pts. 

Laddok S-12 (5L) 

1.33-2.33 pt/A 

+ COC 1 pt/A 

halosulfuron 

0.032 lb 

alachlor + atrazine 

2.5-4.5 lb 

S-metolachlor 

0.95 – 1.91 

bentazon + atrazine 

0.83-1.45 lb/A 

Time To Apply 

Preemergence, early post 

emergence to corn up to 8" 

tall. Before weeds exceed 

the 2 leaf stage. 

107 



Most annual 

grasses, pigweeds, 

and some sedges 

Postemergence Nutsedge and some 



planting; preplant 

incorporated. 


planting. 

Early 

postemergence 

Cucurbits 4,5,6,7 , (cucumber, squash, watermelon, pumpkin, cantaloupe) 

Curbit EC 

3 pts-coarse soil 

3-4 pts-med 

4-4.5 pts-fine 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

ethalfluralin 

1.13-1.7 lb 

glyphosate 

0.5-0.94 lb 

At planting or as a banded 

spray between rows after 

transplanting or seeded 

crop has emerged. 

Postemergence 






Most annual 

grasses and 

pigweed. 


weeds 

Certain annual 


weeds. 

Replant only crops 

listed on the Curbit 

or other ethalfluralin 

labels. 

Most emerged 

weeds. 

Remarks 

Apply to soil surface immediately after 

planting. Check with seed supplier for 

varietal tolerance. Consult label for 

approved tank-mixes. 

User assumes all responsibility for use 

on sweet corn. May be applied overthe-top 

or with drop nozzles form 

spiking to layby. Sequential treatment 

of 0.66 oz/A directed to avoid 

application in the whorl may be made. 

Avoid cultivation for 7 days after 

application. Consult label for plantback 

restrictions. No more than 2 

applications per season. Do not apply 

to crops under stress. Check label for 

weed stage development. Do not 

harvest within 30 days of application. 

Lasso MT & Atrazine premix. Do not 

exceed 6.4 qts of Bullet/A per year. 

Apply to soil surface immediately after 

planting. Consult labels for approved 

tank mixes. 

Rate depends on type of weeds, leaf 

stage and height. Herbicide residue 

may limit crop alternatives after 

harvest. Premix of Basagran and 

Atrazine. 

Do not use under or over row covers, 

hot caps, plastic mulch or other plant 

covers. Do not make broadcast 

applications to transplants. Under 

cool weather that can delay early 

seedling emergence or growth (first 

planting of the season), Curbit can 

cause injury or crop failure. Crop 

residue, weeds, cloddy conditions, 

and wet soils may interfere with the 

performance of Curbit. A 1/2" rainfall 

or irrigation within 5 days of 

application is necessary for activation. 









of harvest.

Rate of 

Formulated 


Broadcast 

Rate/Acre 


Time To Apply 

108 



Cucurbits 4,5,6,7 , (cucumber, squash, watermelon, pumpkin, cantaloupe) continued 

Sandea 

1/2 -3/4 oz 

Sandea 

1/2 -3/4 oz 

+ NIS at 1 qt./ 100 

gal water 

halosulfuron 

0.024 - 0.36 lb 

halosulfuron 

0.024 - 0.36 lb 

Remarks 

Preemergence to Nutsedge and some May be applied as an under plastic 

cucumbers and cantaloupes broadleaf weeds mulch. Apply following final bed 

only. Can also be applied 7 

shaping and just prior to laying plastic. 

days prior to transplanting. 

Wait 7 days after application to plant. 

Postemergence 

Overtop application 14 days 

after transplanting. 

Or 

Direct spray to row middles 

using crop shields. 

Squash, pumpkins, watermelons, cucumbers, and cantaloupes 

Sandea 

1/2 - 1 oz 

halosulfuron 

0.12 – 0.18 lb 

Cucumbers, watermelons and cantaloupes 

Treflan HFP (4EC) , 


Trific 60DF, 

Trilin 4EC 

4EC 


2.0 pt med-hvy soil 

trifluralin 

0.5-1 lb 

60 DF 



Yellow and purple 

nutsedge and some 


Row middle application Nutsedge and some 


Postemergence incorporate. 

Layby spray on side of row 

and row middles. 

Cucumbers, cantaloupe, musk melon, pumpkins, watermelon & squash 

Poast 

0.5-1.5 pts 

+ 2 pts COC 

(1.3-2 oz/gal + 


Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

sethoxydim 

0.09-0.28 lbs 

clethodim 

0.1 - 0.125 lb 



and seedling 

johnsongrass 


Annual and 

Before grasses exceed perennial grasses 

height recommend for 


for the recommended time of 

application. 



Annual and 


Do not apply within 30 days of harvest 

for cucumbers and 57 days for 

cantaloupes. Sandea may be applied 

over the top, a direct spray, or with 

crop shields. Long residual. Check 

label for planting interval of other 

crops. DO NOT apply more than 2 

oz/acre in a 12 month period. 

Apply to row middles for control of 

sedges and some broadleaf weeds. 

Avoid contact of the herbicide with the 

planted crop. Adjust spray to keep 

Sandea off plastic. Do not apply 

within 57 days of harvest on 

watermelon and 30 days on squash. 

Long residual. Check label for 

rotation intervals. Do not apply more 

than 2 oz/A in a 12 month period. 

Direct spray to row middles and/or 

beneath plants when plants are at the 

3 to 4 true leaf stage. Incorporate 

within 24 hrs. Set incorporater 

equipment to move treated soil around 

the base of plants. Days to harvest 

for cucumbers and cantaloupes is 30 

days, watermelons 60 days. Do not 

apply over the top of plants. 


volume (5-20 gal/A) and height of 


coverage. Do not apply Poast within 

14 days of harvest. Do not apply more 

than 3 pt/A/season. Poast plus COC 

should be used with caution when 

temperatures exceed 90° F and the 

relative humidity is 60% or higher 

because of potential leaf injury. Do not 

apply if rainfall is expected within one 

hour following application. Do not 

apply to grasses under stress. 

Do not apply under stressed conditions 

or if rainfall is expected within 1 hour. 


Do not apply more than 8 oz/A in a 

single application. For repeat 

applications, make on a minimum of 

14-day intervals.

Rate of 

Formulated 


Broadcast 

Rate/Acre 


Time To Apply 

109 



Cucurbits (cucumbers, cantaloupe, pumpkins, watermelon & squash) (continued) 

Strategy 2.1L 

2.6 pt/A 

ethafluralin + clomazone 

0.4 – 1.2 lb 

+ 0.125 – 0.325 lb 

Cucumbers, cantaloupes, pumpkins, and watermelons 

Command 3ME 

0..40 – 1.00 pt/A 

clomazone 

0.15 – 0..375 lb 

Aim 


2 EC at 0.75-1.5 oz 0.012 – 0.024 lb. 

40 DF at .33-1.0 oz 


or COC at 1 gal/100 

Eggplant 4,6,7 

Devrinol 50DF 

2 lb-lt soil 

3 lb-med 

4 lb-hvy 

Gramoxone Max 

1.3 pt 

Add NIS at 1 pt/100 

gal or COC at 1 

gal/100 gal (0.33 

oz/gal + 0.33-0.5 oz 

NIS/gal or 1.3 oz 

COC/gal) 


2 pt 

Poast 

0.5-1.5 pts 

+ 2 pts COC 

(1.3-2 oz/gal + 

1.3 oz gal/COC) 

napropamide 

1-2 lb 

paraquat 

0.49 lb 

sethoxydim 

0.188-0.28 lbs 

+ 2 pts 

crop oil concentrate 

After planting Annual grasses and 


Preemergence surface 

applied. 


applications using hooded 

sprayers. 

Remarks 

Apply to soil after seeding. Don’t 

apply prior to planting. Do not 

incorporate. Can use in row middles. 

Annual grasses and Foliar contact with spray drift or vapors 

broadleaf weeds may whiten plants. Symptoms are 

with some cocklebur generally temporary but may persist on 

control. 

some plants. Do not apply within 

1,200 feet of towns, subdivisions, 

commercial vegetable and fruit 

production and commercial nurseries 

and greenhouses. Crop rotation for all 

crops is 12 mos. May be tank-mixed 

with other herbicides. Consult label for 

sensitive varieties. Do not use on 

Jack-O-Lantern pumpkins. 

Most emerged 


2 Pretransplant incorporate Certain annual 

grasses and 

broadleaves 

Posttransplant 

Emerged small 

postemergence spray. Apply annual broadleaf 

when weeds & grasses are weeds & grasses. 

1-6” high. 

Top kill and 


perennials 

Postemergence. Before Annual and 

grasses exceed height perennial grasses 



for the recommended time of 

application. 

Spray will Injur crop. Most effective 

when weeds are less than 4 in. tall. 

Good coverage equals good weed 

control. Will not control grasses but 

can be tank mixed with other 

herbicides to address this. 

Incorporate 1-2" deep soon after 

application. Use on transplants only. 

Spray soil strip between rows of 

plastic after laying the mulch. 


Apply as postdirected spray between 

rows when beds are covered with 

plastic mulch or bare ground. Apply 

with shields to protect crop. Use 20- 

100 gal of water/A. Do not exceed 30 

psi nozzle pressure or spray under 

conditions that may cause excessive 

drift. Do not apply more than 3 times 

per season. Do not allow animals to 

graze treated areas. 

Adjust pressure, spray volume (5-20 

gals/A) and boom height for good 

coverage. Do not apply Poast 20 days 

of harvest. Limit to no more than 4.5 

pts/A/yr. Rainfall-free perion of 1 hr. is 

needed. Use caution when adding 

COC: leaf burn.

Rate of 

Formulated 


Broadcast 

Eggplant 4,6,7 (continued) 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Sandea 

½ - 1 oz 

Aim 2 EC,.75-1.5 oz 

40 DF at .33-1.0 oz 



Select 

6 - 8 oz + 

COC at 1 gal/100 gal 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Trilin 4 EC 

1.0 pt/A coarse soil 

1.5 pt/A med. soil 

2.0 pt/A fine soil 

Trilin 5EC 

0.8 pt/A coarse 

1.2 pt/A med 

1.6 pt/A fine 

Rate/Acre 


glyphosate 

0.5-0.94 lb 

halosulfuron 

0.12 – 0.18 lb 


0.012 – 0.024 lb. 

clethodim 

0.1 - 0.125 lb 

trifluralin 

0.5-1 lb ai/A 

Greens 3,4,7 (collard, mustard and turnip) 

Treflan HFP (4EC) 


Trilin 60DF, 

Trilin 4EC 

4EC 



trifluralin 

0.5-0.75 lb 

60 DF 



Aim2 EC,.75-1.5 oz Carfentrazone-ethyl 

40 DF at .33-1.0 oz 0.012 – 0.024 lb. 



Greens 3,4,7 (mustard and collards) 

Poast 

0.5-1.5 

+ 2 pts COC 

(1.3-2 oz/gal + 

1.3 oz/gal COC) 

sethoxydim 

0.09-0.28 lbs 

Time To Apply 

Postemergence 



Row middles application 30 

days before harvest. Do not 

apply more than 2 oz/A in a 

12 month period. 



sprayers. Will not control 

grasses but can be mixed 

with grass herbicides. 




harvest. Max. is 8 oz/A in a 

single application. 

Pre-transplant incorporated. 

Avoid transplanting until 

temperatures have warmed 

in the spring. 

2 Preplant 

incorporate 



sprayers. 

Postemergence. Before 

grasses exceed height 

recommended. Check the 

label for recommended time 

of application. 

110 



Most emerged 

weeds. 

Nutsedge and some 


Most emerged 


Annual and 




and seedling 

johnsongrass 




Most emerged 


Annual and 


Remarks 









of harvest 

Avoid contact of the herbicide with the 

crop and plastic. Do not apply within 

30 days of harvest. Long residual. 

Check label for recrop intervals. 

Injury will occur if crop is sprayed. 

Most effective when weeds are less 

than 4 in. tall. Good coverage equals 

good weed control. . 



within 1 hour. For repeat applications, 

make on a minimum of 14-day 

intervals. 


just before transplanting. Eggplant 

tolerance may be marginal. Use with 

caution. 


just before planting. 

Spray will Injure crop. Most effective 

when weeds are less than 4”. tall. 

Good coverage equals good weed 

control. Will not control grasses but 

can be mixed with grass herbicides. 

Adjust pressure, spray volume (5-20 

gal/A) and height of spray boom to 

ensure thorough coverage. Do not 

apply more than 4.5 pts/A in one 

season. Do not apply if rainfall is 

expected within one hour following 

application. Do not apply to grasses 

under stress. Should be used with 

caution because of potential of leaf 

injury when the temperature exceeds 


or higher, or anytime the temperature 

exceeds 100°F.

Rate of 

Formulated 


Broadcast 

Greens 3,4,7 (Cont’d) 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Garlic 3,5,7 

Buctril 2EC 

Moxy 2 EC 

Bromox 2 EC 

Broclean 2EC 

1.5-2 pts 

Buctril 4EC 

0.75-1 pt 

Connect 2 WSP 

1.9 - 2.5 lb 

Rate/Acre 


glyphosate 

0.5-0.94 lb 

clethodim 

0.1 - 0.125 lb 

bromoxynil 

0.375-0.5 

Fusilade DX fluazifop 

0.375-1.5 pt 0.1-0.375 lb 

+ 1-2 pts COC per 

25 gal or 0.5-1 pt 

NIS per 25 gal 

(0.75 oz/gal + 1.5 oz 

COC or 0.5 oz 

NIS/gal) 

Goal 1.6E or 2XL 

Galligan 2 EC 

1 – 2 pts 

0.5 pt 

Poast 

0.5-1.5 pt 

+ 2 pts COC 

(1.3-2 oz/gal + 1.3 

oz/gal COC) 

oxyfluorfen 

0.25-0.5 lb 

0.12 lb 

sethoxydim 

0.1-0.3 lbs + 

2 pts crop oil 

concentrate 

Time To Apply 

Postemergence 


hooded spraye Do not 


harvest.r 

111 



Most emerged 

weeds. 

Postemergence Annual and 


and annual 

bluegrass 

Postemergence. Apply after 

crop emerges but before 

garlic is 12". 


weeds 

Postemergence. Apply to Annual and peren- 

actively growing grasses nial grasses. 

before they exceed the 

recommended growth stages 

shown on the label. 

Preemergence after planting 

Postemergence 



recommended. Check the 

label for the recommended 

time of application. 


weeds 

Annual and 


Remarks 

Not labeled for turnip greens. Apply 

with a hooded sprayer in row middles, 

as shielded sprayer in row middles, as 

wiper applications in row middles or 

post harvest. To avoid severe injury 

to crop, do not allow herbicide to 

contact foliage, green shoots, stems, 

exposed roots or fruit of crop. Do not 

apply within 14 days of harvest 

Apply to actively growing grasses. Do 

not apply under stressed conditions or 

if rainfall is expected within 1 hour. Do 

not apply within 14 days of harvesting 

leaves, or 30 days of harvesting the 

root. Do not apply more than 8 oz/A in 

a single application. 

Apply when garlic has 1 to 2 true 

leaves and less than 12" tall and 

weeds 1-4" tall. Use a minimum spray 

volume of 20 gals/A. Do not apply 

within 112 days to harvest. Do not add 

surfactants. Use lower rate on small 

weeds and the higher rate on 4" 

weeds. Do not apply more than 0.5 lb 

ai/A in a single growing season. 



ensure complete coverage. Do not 

harvest garlic within 45 days after 

application. Do not apply a total of 

more than 48 oz. of Fusilade DX per 

acre per season. Do not apply to 

grasses which are stressed. Do not 

apply if rainfall is expected within 1 

hour. 

Apply after garlic has 2 true leaves 

and weeds are in the 2 to 4 true leaf 

stage. Some garlic injury may result. 

Injury may be severe if applied under 

cool, wet conditions. Do not make 

more than 4 applications/year. Do not 

apply within 60 days of harvest. 




coverage. Do not apply within 45 

days of harvest. o not apply more 

than 3 pts/A/season. Do not apply to 

grasses under stress. Should be used 

with caution because of potential for 

leaf injury when the temperature 

exceeds 90°F and the relative humidity 

is 60% or higher, or anytime the 

temperature exceeds 100°F.

Rate of 

Formulated 


Broadcast 

Garlic 3,5,7 (Continued) 

Rate/Acre 


Prism 0.94 EC clethodim 

13-34 oz 0.1-0.25 lb 

Select 2EC 

6-16 oz + COC at 1 

gal/100 gals 

(0.33 - 0.66 oz/gal + 


Prowl/Pendimax 3.3 

1.2-1.8 pts - coarse 

1.8-2.4 pts - med 

1.8-3.6 pts - fine 

Pentagon DG 

.5-1.25 lbs – coarse 

1.25-1.7 lb – med 

1.7-2.5 lbs – fine 

Outlook 6 EC 

12 – 21 oz. 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Roundup 

WeatherMax 

5.5L 

11-22 ozs 

pendimethalin 

0.5-1.5 lb 

Dimethenamid-P 

0.60 – 1.0 lb. ai 


0.012 – 0.024 lb. 

glyphosate 

0.5-0.94 lb 

Head and Leaf Lettuce and Endive 3,4,6,7 

Balan DF 

2.0 lbs-coarse/med 

2.5 lbs-fine 

Leaf Lettuce 

Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

benefin 

1.12-1.5 lb. 

clethodim 

0.1 - 0.125 lb 

Time To Apply 

Postemergence. Apply to 

actively growing grasses. 

Preemergence 

after planting. 

Lettuce, Head and Leaf (direct seeded & transplant) 

Kerb 50-WP 

2.0-3.0 lbs- 

coarse & med 

3.0-4.0 lbs-fine 

pronamide 

1-2 lbs 

Postemergence 

Apply to garlic 

1-5 true leaf growth stage. 

Postemergence after crop 

has 2 true leaves. 



sprayers 

Postemergence 




harvest. 

Preplant 

incorporate before seeding 

or transplanting. 


growing grasses. 

Do not apply more than 8 

oz/A in a single application 

Preplant; Preemergence; 

Postplant; Preplant 

Incorporated 

Apply before or after 

thinning but prior to weed 

seed germination. 

Postemergence 

112 



Annual and 



grasses and 

broadleaves 


pigweed. 

Most emerged 


Most emerged 

weeds. 



Annual and 


Remarks 

Rates vary by grass species, stage 

and region. Do not apply under 

stressed conditions or if rainfall is 

expected within 1 hr. Days to harvest - 

45. Do not apply more than 0.5 lb ai 

per season. Apply in a minimum of 20 

gals/A. 

Treatment most effective when rainfall 

or overhead irrigation is received 

within 7 days after application. May be 

applied as split application both 

preemergence and postemergence. 

Garlic treated postemergence should 

not be harvested within 45 days after 

application. 

Don’t apply within 30 days of harvest. 




good weed control. Will not control 

grasses but can be tank mixed with 

other herbicides to address this. 


sprayer, or wipers in row middles or 

post harvest. Avoid crop injury by 

keeping herbicide off foliage, green 


Operate equipment to incorporate into 

the top 2-3" of the final seed bed. 

Check label for further information. 




days of harvest. For repeat 

applications, make on a minimum of 

14-day intervals. 

Annual grasses and Labeled on lettuce, endive & escarole. 

broadleaves. 55 Necessary to move herbicides into the 

days to harvest. Do root zone of germinating weeds by 

not apply overhead sprinkler irrigation or rainfall 

postemergence to leaf 2-3 days after application. Incorporate 

lettuce. Make only shallowly and thoroughly before 

one application/year planting. Check rotation restrictions.



Broadcast 

Rate/Acre 


Time To Apply 

Lettuce Head and Leaf (direct seeded & transplant) (continued) 

Poast 

0.5-1.5 pts 

+ 2 pts COC 

(1.3-2 oz/gal + 

1.3 oz/gal COC 

Prefar 4-E 

5-6 qt/A 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Lettuce and Endive 

Fusilade DX 

0.375-0.75 pt 

(6-12 oz) + 

1-2 pt COC 

OR 

0.5-1 pt NIS per 

25 gal 

sethoxydim 

0.09-0.28 lbs 


concentrate 

bensulide 

5 - 6 lb 


0.012 – 0.024 lb. 

glyphosate 

0.5-0.94 lb 

fluazifop 

0.1-0.375 lb 

Endive, Escarole, Radicchio 



Trilin 4EC 

1 pt light soil 


Irish Potatoes 3,4,5,7 

Gramoxone Max 

0.7 – 1.3 pt 


gal or COC at 1 

gal/100 gal (0.33 

oz/gal + 0.33-0.5 oz 


COC/gal) 

trifluralin 

0.5-0.75 lb 

paraquat 

0.25-0.49 lb 

Postemergence before 

grasses exceed 

recommended height. 

Check label for the 


application. 

Do not apply within 30 

days of harvest of head 

lettuce and 15 days leaf 

lettuce 

Preplant 

incorporate. 

Preemergence. 



sprayers 

Postemergence 


hooded sprayer. 

Do not apply within 14 

days of harvest 


actively growing grasses 




2 Preplant 

incorporate 

113 



Annual and 


Certain annual 


weeds 

Most emerged 


Most emerged 

weeds. 


grasses. Do not 

apply to grasses 

that are stressed. 

Do not apply if 

rainfall is expected 

within 1 hour. 




and seedling 

johnsongrass 

Single application 10 to 14 Desiccate potato 

days prior to harvest. Split vines 

application of higher rates 5 

days apart when vine growth 

is dense. 




coverage. Do not apply more than 4.5 

pts/A/year. Do not apply if rainfall is 

expected one hour after application. 

Do not apply to grasses under stress. 

Poast plus COC should be used with 

caution because of potential of leaf 

injury when the temperature and RH 

are high. 

Incorporate 1-2” before planting. Apply 

preemergence only on crops where 

application is followed by immediate 

irrigation. 















gal/A) and pressure to ensure 

complete coverage. Do not harvest 

lettuce within 28 days after 

application. Do not apply a total of 

more than 48 oz. of Fusilade DX per 

acre per season. 


just before planting. Cold, wet soil 

conditions just after planting may 

increase risk of crop injury. Do not 

seed until seedbed has warmed. 


Apply in 50 to 100 gallons of water 

with NIS.



Broadcast 

Irish Potatoes 3,4,5,7 (continued) 

Des-I-Cate 

1.5-2 gal 

OR 

Desicate II 

1.5-2 qts 

Dual Magnum 


1 pt-lt soil 

1.5 pt-med 

2 pt-hvy 

Dual Magnum 

1.67 pt 

Lorox DF 

1-1.5 lbs - coarse 

1.5-2 lbs - med 

Poast 

0.5-2.5 pts + 

2 pts COC 

(1.3-2 oz/gal 

+ 1.3 oz/gal COC) 

Rate/Acre 


endothall 

0.75-1.0 lb 

s-metolachlor 

0.96-1.9 lb 

s-metolachlor 

0.96-1.4 lb 

linuron 

0.75-2.0 lb 

sethoxydim 

0.09-0.47 lbs 

+2 pts crop oil 

concentrate 

Time To Apply 

Apply to potato vines 10-14 

days prior to harvest 

Preplant incorporate or 

preemergence after planting 

or preemergence after dragoff 

or hilling treatment but 

before weeds emerge. 

Postemergence 

Directed spray after 

hilling/layby. 

Preemergence after 

planting but before crop 

emergence. Apply before 

grasses are 2" tall and 

before broadleaf weeds are 

6" tall. 

114 



Potato vines Contact type herbicide for killing 

potato vines. In addition to facilitating 

harvest, it assists in setting potato 

skins. Apply in 20-100 gallons of 

water/A. Use higher rates for heavy 

vine growth. Treated potatoes must be 

harvested by mechanical means only. 

Culling of harvested potatoes is 

allowed. 



nutsedge, pigweed, 

carpetweed 



nutsedge, pigweed, 

carpetweed 




Postemergence. Before Annual and perennial 



grasses 

Check label for details on application. 

If cool wet weather occurs after 

application, Dual delays maturity and 

reduces yields in early maturing 

varieties. Do not apply both as 

preemergence and incorporated 

treatment. Potatoes treated with 

Dual should not be harvested within 

60 days after a planting or drag-off 

application. Check label for tankmixes 


Incorporate in top 3" before planting. 

Planting & later cultural practices 

should not bring untreated soil to the 

surface. Postplant application made 

any time after planting to drag off, but 

before potato emergence. Do not 

damage seed pieces or sprouts with 

incorporation equipment. 

Applied after hilling at layby to row 

middles to control grass and broadleaf 

weeds. This application will not control 

emerged weeds. It may be applied 

over a previous Dual Magnum 

application, but do not apply more than 

3.6 pts/A of Dual Magnum in a single 

crop season. Potatoes should not be 

harvested 40 days after a layby 

application. If cool wet weather occurs 

after application, Dual may delay 

maturity and reduce yields in early 

maturing varieties. Check label for 


Plant seed at least 2" deep. Do not 

spray over top of emerged potatoes. 

If emerged weeds are present, add 

1 pt surfactant/25 gal. Best results 

obtained when application is made 

to moist soil, followed within 2 weeks 

by 1-2" of rainfall. Check label for 


Herbicide residue may limit crop 

alternatives after harvest. 


volume (5-20 gals/A) and height of 


coverage. Do not apply Poast within 

30 days of harvest. Do not apply 

more than a total of 5 pts/A in one 

season. Do not apply if rainfall is 

expected within one hour following 

application. Do not apply to grasses 

under stress.



Broadcast 

Irish Potatoes 3,4,5,7 (continued) 


3.3EC 

1.2 pts – coarse 

soil 

2.4 pts - med 

3.6 pts - fine 

Pentagon DG 

.85-1.25 lb - coarse 

1.25-1.7 lb - med 

1.7-2.5 lb - fine 

Prowl 3.3EC 

Pendimax 3.3 

1.2 pts - coarse 

2.4 pts - med 

2.0-3.6 pts - fine 

Pentagon DG 

.75-1.25 lb - coarse 

1.25-1.7 lb - med 

1.7-2.5 lb - fine 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Reglone 

Diquat 

1 to 2 pt/A 

+ 8-64 ozs 

NIS/100 gal 

Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 

Sencor 4L 

1 pt - lt soil 

1.5 pt - med 

2 pt - hvy 

Sencor DF 

0.66 lb - lt 

1 lb - med 

1.3 lb - hvy 



Trilin 4EC 

4EC 




Rate/Acre 


pendimethalin 

0.75-1.5 lbs 

pendimethalin 

0.75-1.5 lbs. 


0.012 – 0.024 lb. 

diquat 

dibromide 

0.25-0.5 lb 

clethodim 

0.1 - 0.125 lb 

metribuzin 

0.5-1 lb 

trifluralin 

0.5-1 lb 

60 DF 


1.33 lb med-soil 


Time To Apply 

Preemergence, incorporate 

after planting 

Early post emergence. 

Apply from crop emergence 

to 6" stage of growth. 



sprayers 

Apply at least 7 days 

prior to harvest. 


growing grasses. Days to 

harvest=30. 

115 



Most annual 




broadleaves. 

Most annual 




broadleaves. Will not 

control emerged 

weeds 

Most emerged 


Remarks 

Do not apply prior to planting. Do not 

apply to sweet potatoes. Apply after 

planting but before potatoes and 

weeds emerge or after drag off. 

Most effective when rainfall is 

received within 7 days after 

application. Incorporate after 

planting within 7 days of application 

into the top 1-2 inches of soil. Check 

label for tank mixes with other 

herbicides. 

This treatment is most effective 

when adequate rainfall is received 

within 7 days after application. Do 

not apply if potatoes are under 

stress from cold/wet or hot/dry 

conditions or crop injury may occur. 

Check label for tank-mixes with 

other herbicides. 



than 4 in. tall. Good coverage 

equals good weed control. Will not 

control grasses but can be tank 

mixed with other herbicides to 

address this. 

Potato vines Desiccate to facilitate harvest. Apply 

1 to 2 pt/A in 20-100 gal of water/A. 

Use higher volumes (40-100 gal) for 

thorough coverage of heavy vine 

growth. Make a second application a 

minimum 5 days after first 

application where vine growth is 

dense. Do not exceed a total of 4 

pt/A. 

Annual and 




within 1 hour. Do not apply more 


Make repeat applications, on a 

minimum of 14 day interval. 

Preemergence Crabgrass, foxtail, Use the lower rate on sandy soils. Do 

seedling 

not plant treated areas to crops other 

johnsongrass, fall than potatoes for one year after 

panicum, signalgrass. treatment. Do not apply to sweet 

several broadleaf potatoes or yams. Check label for 

weeds 


Incorporate after planting 

but prior to crop emergence 

or after drag off. 

Postmergence after potato 

plants have fully emerged to 

6" stage. Incorporate as 

early post treatment, but do 

not completely cover the 

plants during cultivations. 




and seedling 

johnsongrass 

Set incorporation equipment so that 

bed and furrow are uniformly covered 

with a layer of treated soil. If the 

herbicide is concentrated over the 

bed, potato emergence may be 

retarded and stem brittleness can 

occur. Be careful that incorporation 

treatment does not damage potato 

seed pieces or sprouts.



Broadcast 

Okra 3,7 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 





Triliin 4EC & 60DF 

4EC 



2 pt hvy soil 

Onion 3,4,5,7 

Goal 1.6E 

1.25-2.5 pt 

Galigan 2 E 

1.0-2.0 pt 

Goal 1.6E 

0.6 pt 

Galigan 2E 

0.5 pt 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Rate/Acre 


glyphosate 

0.5-0.94 lb 


0.012 – 0.024 lb. 

trifluralin 

0.5-1 lb 

60 DF 




oxyfluorfen 

0.25-0.5 lb 

oxyfluorfen 

0.12 lb 


0.012 – 0.024 lb. 

glyphosate 

0.5-0.94 lb 

Time To Apply 

Postemergence 





sprayers 

2 Preplant 

incorporate 

Pre-transplant 

Post transplant 

116 



Most emerged 

weeds. 

Most emerged 


Small grasses, 

broadleaves & seed 

johnsongrass 

Many annual 


Postemergence to crop. Many annual 

Apply when onions have at broadleaf 

least 2-3 fully developed weeds 

true leaves and when weeds 

are in the 2-4 leaf stage or 2 

weeks after transplanting. 

Do not apply within 45 days 

of harvest. Do not apply to 

onion plants under stress. 



sprayers 

Postemergence 



Most emerged 


Most emerged 

weeds. 









of harvest 








just before planting. Check label for 

rates of other formulations of trifluralin. 

Apply after soil preparation, but prior 

to transplanting. Transplanting should 

be completed with minimal soil 

disturbance. Posttransplant: onions 

are most tolerant of a post emergence 

application immediately after and up 

to 2 days after transplanting. Treated 

soil should be left undisturbed after 

transplanting. Do not exceed 2 pt/A as 

a result of multiple applications in one 

season. If less than 2 pts/A is applied 

as a pre-or post transplant treatment, 

post-emergence applications can be 

made. Do not apply preemergence to 

direct-seeded onions. 

Multiple treatments may be applied. 

Do not exceed 2 pts/A/yr. Apply in a 

minimum of 40 gals of water/A with 

flat fan tips at 20 to 40 psi. Avoid 

windy day spraying. For dry bulb 

onions. Avoid application during 

extended periods of cloudy, humid 

weather when soil moisture is 

plentiful. 















of harvest.



Broadcast 

Onion 3,4,5,7 (dry bulb) 

Battery Acid 

3-5% solution of 

actual sulfuric acid 

Buctril 2EC 

Moxy 2 EC 

Broclean 2 EC 

Bromox 2 EC 

1-1.5 pt 

Buctril 4EC 

0.5 to .75 pt 

Connect 20 WSP 

1.25 - 1.9 lb 

Fusilade DX 

0.375-1.5 pt 

(6-24 ozs) 

+ 1-2 pt COC/ 25 gal 

OR 0.5-1 pt NIS per 

25 gal (0.75 fl oz/gal 

+ 1.5 oz COC or 0.5 

oz NIS/gal) 

Outlook 6 EC 

12 – 24 oz. 

Rate/Acre 


Time To Apply 

sulfuric acid Postemergence. Apply after 

onions have reached the 

true leaf stage and weeds 

are in the 2to 4 leaf stage. 

Best results are obtained 

when applied on a bright, 

sunny, warm day. 

bromoxynil 

0.25-0.375lb 

fluazifop 

0.1-.375 lb 

Dimethenamid-p 

0.6 – 1.0 


13-34 oz 0.1-0.25 lb 

Select 8EC 

6-16 oz 

+ 1 gal COC/100gals 

(0.33 - 0.67 oz/gal + 


Onion (green or dry bulb) 

Poast 

0.5-1.5 pt 

+ 2 pts COC 

(1.3-2 oz/gal 

+ 1.3 oz/gal COC) 

sethoxydim 

0.1-0.3 lbs 

+2 pts crop oil 

concentrate 

Onions (transplants, dry bulb) 

Goal 2XL, 2EC, 

Galigan 2E 

1-2 pts 

oxyfluorfen 

0.25-0.5 lb 

Postemergence 

Apply when onions have 

2-5 true leaves. 


Apply to actively growing 

grasses before they exceed 

the recommended growth 


Do not harvest onions within 

45 days after application. 

Postemergence after crop 

has 2 true leaves. Do not 


harvest. 

Postemergence 


grasses. 



height recommended height 

for treatment. Check the 



After transplanting or within 

2 days of transplanting. 

117 



Emerged small 


and some grasses 


weeds 

Annual and 


Most annual 



Annual and 


and annual 

bluegrass 

Annual and 


Apply in sufficient water to get 

thorough coverage (40-60 gals/A). 

Always pour acid into water, never 

water into acid. Wear protective 

clothing and eyewear when handling 

acid and spraying. 

Apply postemergence to onions which 

have 2 to 5 true leaves. Water volume 

is important. Apply in 50-70 gal/A. Soil 

and onion foliage should be dry at 

time of application, humidity should be 

low and dew should be dried. Do not 

treat if thrips damage or other damage 

has occurred and removed or reduced 

the waxy coating on the onion foliage. 

Some crop damage or death may 

occur even under ideal conditions. 

Uniform coverage is essential. 




apply a total of more than 48 oz. of 

Fusilade DX per acre per season. Do 

not apply to grasses that are stressed. 

Do not apply if rainfall is expected 

within 1 hour. 

Dry bulbs only. If applications are 

made to transplant crop, DO NOT 

APPLY until transplants are in the 

ground and soil has settled around 

transplants with several days to 

recover. 

Rates vary by grass species stage 

and geographical regions. Do not 

apply under stressed conditions or if 

rain is expected in 1 hour. Do not 

apply more than 0.5 lb ai/A per 

season. Days to harvest –45. Apply 

in a minimum of 20 gallons/A. 




coverage. Do not apply within 30 


than 4 1/2 pts/A in one season. Do 

not apply if rainfall is expected within 

one hour following application. Do not 

apply to grasses under stress. Should 

be used with caution because of 

potential of leaf injury when 

temperatures exceed 90°F and 

relative humidity is 60% or higher, or 

the temperature exceeds 100°F. 

Annual broadleaf Transplants dry bulb only. Apply as 

weeds. Do not a single application immediately after 

apply within 45 days transplanting or within 2 days after 

of harvest. transplanting for preemergence 

control of weeds. See label for rates 

and instructions for use.



Broadcast 

Rate/Acre 


Onions (dry bulbs direct seed and transplant) 

Dacthal 75 WP 

6-8 lb - lt soil 

8-10 lb - med 

10-14 lb - hvy 


3.3 EC 

1.2-1.8 pt - coarse 

1.8-2.4 pt - med 

1.8-3.6 pt - fine 

Pentagon DG 

0.85-2.5 lbs 

Time To Apply 

118 



DCPA At seeding Annual grasses and 


weeds 

pendimethalin 

0.5-15 lb 

Treflan HFP (4EC) trifluralin 

Trifluralin 4EC 0.375-0.625 lb 

Trilin 4EC 



Bell Pepper 4,5,6,7 and Hot Pepper transplants 

Gramoxone Max 

1.3 pts 


gals or COC at 1 

gal/100 gals (0.33 

oz/gal + 0.33-0.5 oz 


COC/gallon) 


2 pt 

Poast 

0.5-1.5 pts 

+2 pts COC 

(1.3-2 oz/gal 

+1.3 oz COC/gal) 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

paraquat 

0.49 lb 

sethoxydim 

0.1-0.3 lb 

glyphosate 

0.5-0.94 lb 

Postemergence.Broadcast 

application between the 2-9 

true leaf stage. 

Layby spray, incorporated. 

Applied to row middles with 

shields. 


postemergence spray. 

Apply when weeds & 

grasses are 1-6" high. 



height recommended 

for treatments. Check the 



Postemergence 




grasses and 

broadleaves 

Many small seed 

grasses and 

broadleaves 

Apply in at least 20 gal of water/A. A 

minimum of 1/3-1/2 inch of water is 

necessary to activate Dacthal within 3 

to 5 days of application. Do not 

incorporate 

Do not apply within 45 days of 

harvest. Treatments are most effective 

when not more than 0.5” rainfall or 

overhead irrigation is received within 7 

days after application. Heavy rains 

after application can cause crop injury. 

Incorporate within 1 day of application. 

Rate varies by soil type. Avoid 

contacting roots, bulbs or foliage with 

spray. 

Emerged small Do not apply within 30 days of 

annual broadleaf harvest. Apply as postdirected spray 

weeds and grasses. between rows when beds are covered 

Top kill and with plastic mulch or bare ground. 

suppression of Apply with shields to protect contact 

perennials with crop plants. Use 20-100 gals 

water/A. Do not exceed 30 psi nozzle 

pressure or spray under conditions 

that may cause excessive drift. Do 

not apply more than 3 times per 

season. Do not allow animals to graze 

on treated areas. 


grasses 

Most emerged 

weeds. 




coverage. Do not apply Poast 

within 20 days of harvest. Do not 

apply more than 4 1/2 pts/A in 

one season. Crop oil should be used 

with caution because of potential leaf 

injury when temperature exceeds 


or higher, or anytime the temperature 

exceeds 100°F. Do not apply if 

rainfall is expected within one hour 

following application. Do not apply to 

grasses under stress. 









of harvest



Broadcast 

Rate/Acre 


Time To Apply 

Bell Pepper 4,5,6 and Hot Pepper transplants (continued) 

Sandea 

0.5 - 1 oz 

+ 

NIS at 1 qt/100 gals. 

Select 

6 - 8 oz 


gals 

(0.33 to 0.66 oz/gal 

+ 1.3 oz COC) 



Trific 60DF, 

Trilin 4EC 

4EC 




halosulfuron 

0.024-0.048 lb 

clethodim 

0.1 - 0.125 lb 

trifluralin 

0.5-1 lb 

60 DF 




119 



Preemergence in row Nutsedge and some Row middles only. Apply to row 

middles between plastic. broadleaf weeds middles as preemergence and 

Postemergence in row 

postemergence spray. Avoid contact 

middles between plastic. Do 

of the herbicide with the crop and 

not apply within 30 days of 

plastic. Early season application will 

harvest. 

give postemergence and 

preemergence control. Do not apply 

more than 2 oz/A in a 12-month 

period. Long residual. Check label 

for recrop intervals. 




Incorporate 

Annual and 





seedling 

johnsongrass 

Bell Peppers & Hot Peppers (except banana peppers) [transplanted and direct seeded] 

Command 3ME 

0.67-2.67 pts 

clomazone 

0.25-1.0 lb 

Hot Pepper (direct seeded or transplanted) 

Devrinol 50DF 

2 lb - lt soil 

4 lb – hvy soil 

Devrinol 2EC 

0.5 gal – lt soil 

1.0 gal – hvy soil 

Hot Peppers 

Gramoxone Max 

1.3 pts 

+ NIS at 8 oz/100 

gals 

OR 

COC at 1 gal/100 

gals. 


2 pt 

napropamide 

1-2 lb 

paraquat 

0.49 lb 

Preplant 

Incorporate 

(1" or less). Preemergence 

soil applied. 

2 Preplant 

incorporate 


postemergence 

spray. Apply when weeds & 

grasses are 

1–6” high. 

Most annual 


small seeded 




broadleaves 

Emerged small 

annual broadleaf 

weeds and 

grasses. Top kill 


perennials. 



within 1 hour. Days to harvest=20. Do 

not apply more than 8 oz/A per 

application. Make repeat applications 

on a minimum of 14-day intervals. 


just before transplanting. 

Do not use on banana peppers. 

Immediate incorporation (1" or less) is 

recommended. Plant seed or 

transplants below the chemical 

barrier. Foliar contact with spray drift 

may cause temporary whitening of 

plants. Whitening may persist on 

some plants. Do not apply Command 

3ME within 1,200 feet of towns, 

subdivisions, commercial vegetable 

and fruit production and commercial 

nurseries and greenhouses. 

Apply to well worked soil. Incorporate 

the same day as applied to a depth of 

1-2". 

To control seedling johnsongrass, 

annual grasses and broadleaf weeds 

2-4" tall, use 8 oz per treated acre for 

suppression of established 

bermudagrass & purple nutsedge. 

First application should be made no 

earlier than 8 weeks after 

transplanting. If needed, make 

additional application at intervals of 2- 

3 weeks. Do not treat more than 3 

times. Do not harvest fruit until at 

least one week after treatment.



Broadcast 

Rate/Acre 


Time To Apply 

Tabasco Peppers & other Hot and non-bell type peppers 

Fusilade DX 

0.375 - 1.5 pt 

1-2 pts COC 

per 25 gal or 

0.5-1 pt NIS 

per 25 gal 

(0.75 oz/gal + 

1 ½ oz/gal COC or 

1/2 oz NIS/gal) 

Shallots ,dry bulbs 

Prefar 4 EC 

5 qt – lt 

6 qt – med-fine 

Prowl/Pendimax 3.3 

EC 

1.2-1.8 pt-coarse 

1.8-2.4 pt- med 

1.8-3.6 pt- fine 

Pentagon DG 


1.25-1.7 lb-med 

1.7-2.5 lb-fine 

fluazifop 

0.094-0.375 lb 

bensulide 

5-6 lb 

pendimethalin 

0.5-1.5 lb 


13-34 oz 0.1-0.25 lb 

Select 2EC 

6-16 oz 

+ 1 gal/100gals 

COC 

(0.33 - 0.66 oz/gal + 

1.3 oz COC) 

Poast 

0.75-1.5 pt + 

2 pts COC 

(1.3-2 oz/gal + 

1.3 oz/gal COC) 

Southern Peas 3,4,7 

sethoxydim 

0.1-0.3 lbs 

Assure II 0.88EC Quizalofop 

6-12 oz 

p-ethyl 

+1 gal COC/100 gal 0.04-0.08 lb 

or 

1 qt NIS/100 gallons 




recommended stages 

shown on the label. 

Preplant incorporate. 

Preemergence only on 

crops to be irrigated up. 


Broadcast application 

between the 2-9 true leaf 

stage. 



120 



Annual and 


Some broadleaf 

and annual grasses 

Many small 

seed grasses 


Annual and 


Postemergence.Before Annual and 

grasses exceed height perennial grasses 


Check the label for the 


application. 

Apply to emerged grassed. 

Check label for best time to 

treat specific grasses. 

Annual and 

perennial weeds. 




harvest within 45 days after 

application. Do not apply more than 

48 oz/A/season Fusilade DX. When 

grass foliage is dense, use 60 psi & 

minimum of 20 gal/A. Best coverage 

is obtained when two nozzles are 

used, one directed to each side of the 

planted row. Not labeled on bell 

peppers. Special local need label 

for Louisiana. 

Incorporate to a depth of 1-2” before 

planting. Apply preemergence only on 

crops where application is followed by 

immediate irrigation. 

Do not apply within 45 daysof 

harvest. Treatments are most 

effective when rainfall or overhead 

irrigation is received within 7 days 



and regions. Do not apply under 

stressed conditions or if rain is 

expected in 1 hour. Do not apply more 

than 0.5 lbai/A per season. Days to 

harvest – 45. 


volume (5-20 gal/A) and boom height 


apply within 30 days of harvest. Do 

not apply more than 4 1/2 pts/A in one 

season, apply if rainfall is expected 

within one hour following application 

or to grasses under stress. Should be 

used with caution because of potential 

leaf injury when temperature exceeds 

90°F is 60% or higher, or anytime 

temperature exceeds 100°F. 

Adding COC to Assure may increase 

the like hood of crop injury at high 

temperatures. Do not apply on days 

that are unusually hot and humid. Do 

not apply within 30 days of harvest.



Broadcast 

Southern Peas (continued) 

Basagran 4SL 

1.0 -2.0 pt. 

Dual Magnum 


1 pt-lt soil 



Poast 

1.0-1.5 pts 

+2 pts COC 

(1.3-2 oz/gal 

+1.3 oz COC/gal) 

Prowl 3.3 EC 

1.2-1.8-coarse 

1.8-2.4-med 

1.8-3.6-fine 

Pentagon DG 


1.25-1.7 lb-med 

1.25-2.5 lb-fine 

Pursuit 2 EC 

4 ozs. 

Pursuit 70 DG 

0.72 1.44 oz 

Add NIS at 2 

pt./100 gal. to Post. 

treatments. 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Roundup 

WeatherMax 

5.5L 

11-22 ozs 


Trifluralin 4 or 5EC 

Trilin 4EC or 5EC 

4EC 




Rate/Acre 


Bentazon 

0.5 – 1.0 lb. 

s-metolachlor 

1.0-2.0 lb 

sethoxydim 

0.2-0.3 lb 

pendimethalin 

0.5-1.5 lb 

Imazethapyr 

0.064 lbs. 

0.032 – 0.064 lbs. 


0.012 – 0.024 lb. 

glyphosate 

0.5-0.94 lb 

trifluralin 

0.5-1.0 lb 

60 DF 




Time To Apply 

Apply over the top when 

peas have at least 3 pairs of 

leaves. 

2 Preemergence 

after planting or preplant 

incorporated 





for the recommended time 

of application. 

Preplant 

incorporate 

Preplant Incorporated, 

preemergence after 

planting. 

Early postemergence Peas 

at least 3” tall, but before 5 

nodes and flowering. Apply 

when weeds are 1 to 3 

inches tall or 1 to 4 leaves. 



sprayers 

Postemergence 



Do not apply within 14 days 

of harvest 

Preplant 

incorporate 

121 




weeds and yellow 

nutsedge. 

Many small 

seeded grasses, 

yellow nutsedge, 

pigweed, 

carpetweed. 

Annual and 



and broadleaf 

weeds 


weeds and reduce 

competition from 

morningglories. 

Most emerged 


Most emerged 

weeds. 



broad-leaf weeds & 

seedling 

johnsongrass 

Do not add crop oil concentrate to the 

spray solution. Do not apply within 30 

days of harvest. Do not apply when 

peas are in bloom. 

Check label for tank mixes with other 

herbicides. Combine with another 

herbicide to increase spectrum of 

broadleaf weed control. Incorporating 

Dual 2 ’ will help control nutsedge. 

Apply to emerged grasses. Do not 

apply on days that are hot and humid. 


harvest. 

Incorporate thoroughly into the top 1- 

2" of soil or up to 60 days prior to 

planting. Do not use preemergence 

as a surface application. Cold wet soil 

conditions after planting increase risk 

of crop injury. Check label for tankmixes 


May cause crop injury. Use of Pursuit 

on Southern peas is at the user 

and/or grower risk. The use of 

trifluralin prior to Pursuit application 

may increase the likelihood and 

severity of crop damage. Check label 

for maximum number of leaves at 

which weeds should be sprayed post 

emergence. Do not make more than 

one application of Pursuit for a year. 

Allow 30 days between application 

and harvest. 














of crop. 

Incorporate thoroughly into top 2" of 

soil just before planting. Cold wet soil 

conditions after planting increase risk 

of crop injury. Check label for rates of 

other trifluralin formulations.



Broadcast 

Spinach 3 

Poast 

0.5-1.5 pts + 

2 pts COC 

(1.3-2 oz/gal + 


RoNeet 6EC 

2 qt 

Roundup 

WeatherMax 

5.5L 

11-22 ozs 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 



Select 2 EC 

6 – 8 oz. 

+ 1 gal. COC/100 

gal. of water. 

Spin-Aid 

3-6 pts/A 

Split rate: 

2.5-3 pts/A 

followed by 

2.5-3 pts/A 

Stinger 3 EC 

0.66-0.5 pt 

Rate/Acre 


sethoxydim 

0.1-0.3 lbs 

cycloate 

3 lb 

glyphosate 

0.5-0.94 lb 


0.012 – 0.024 lb. 

Clethodim 

0.094 – 0.125 lbs. ai. 

phenmedipham 

0.4-1.0 lb 

clopyralid 

0.125-0.187 lb 

Time To Apply 

Post-emergence. Before 



treatment. Check label for 

the recommended time of 

application. 

Do not apply to grasses 

under stress. 

Do not apply Poast 


122 



Annual and 


Annual bluegrass 

will not be 

controlled. 

Preplant incorporated Annual grasses 

and broadleaves. 

Postemergence 




harvest 



sprayers 



apply when grass is 

stressed of if rainfall is 

expected within an hour. 


actively growing weeds not 

under water or heat stress 

at the two true leaf stage. 

Do not apply later than 40 

days prior to harvest. May 

cause injury if the crop is 

under stress. 

Postemergence to spinach 

in the 2 to 5 leaf stage. Do 

not apply within 21 days of 

harvest. 

Most emerged 

weeds. 

Most emerged 


Annual and 


Do not apply within 

14 days of harvest. 

Selected broadleaf 

weeds 

Adjust pressure, spray volume and 

boom height to ensure thorough 

coverage. Do not apply more than 3 

pts/A in one season. Poast plus crop 

oil concentrate should be used with 

caution because of potential leaf 

injury when temperatures exceed 


or higher or when temperatures 

exceed 100°F. Do not apply if rainfall 

is expected 1 hour after application. 

Incorporate 2 to 3 inches before 

planting. 


sprayers, or wiper applicators in row 




shoots, stems, exposed roots or fruit . 







Rates vary by grass species and 

stage. Do not apply more than 0.50 

lbs. ai/A/year. Adding COC increases 

chances of crop injury, especially at 

high temperatures. 

Apply at 3-6 pts/A in 11-22 gals of 

water/A when weeds are at the 2 leaf 

stage and spinach is past the 4-6 true 

leaf stage. Split rate: apply at 2-leaf 

stage of spinach, repeat 4-6 days 

later with 3 pt/A. Use when 

temperatures are below 75F and 

spray just before sunset to prevent 

possible injury. Some injury may be 

seen such as growth retardation 

and/or chlorosis or tip burn. Crops 

usually resume growth in 10 days. 

Broadleaf weeds Apply to spinach in the2 - 5 leaf stage 

when the weeds are small and 

actively growing. Will control most 

legumes.



Broadcast 

Sweetpotatoes 

Command 3ME 

1 1/3-2 2/3 pts 

Fusilade DX 

0.375-1.5 pt 

1-2 pts COC per 25 

gal OR 

0.5-1 pt NIS 

per 25 gal 

(0.75 oz/gal 

+ 1 1/2 oz COC or 

1/2 oz NIS/gal) 

Poast 

0.5-1.5 pts 

+ 2 pts COC 

(1.3-2 oz/gal + 


Select 2EC 

6-16 oz 


COC 

(0.33 - 0.66 oz/gal 

+ 1.3 oz COC) 

Valor SX 

2 - 2.5 oz 

Tomatoes 4,5,6,7 

Dual 

Magnum 

1.0— 1.33 pt coarse 

1.33-1.67 pt 

medium & fine 

Dual 

Magnum 

1.0-1.33 coarse 

1.33-1.67 medium 

+ fine 

Rate/Acre 


clomazone 

0.5-1.0 lbs 

fluazifop 

0.094-0.375 lbs ai/A 

sethoxydim 

0.1-0.3 lbs 

+ 2 pts COC 

clethodim 

0.1-0.25 lb 

flumioxazin 

0.063 – 0.079 lb 

S-metolachlor 

0.95-1.58 

Time To Apply 

Surface application after 

transplanting 





stages. 



recommended 

for treatments. Check the 





grasses. 

Pretransplant to a weedfree 

bed 

Preplant 

Incorporate preplant before 

transplanting. 

Post directed to transplants 

after first settling rain or 

irrigation. 

Preplant under plastic 

Row middle 

123 




broadleaf 

weeds 

Annual and 


Annual and 


Annual and 


Broadleaves such 

as smellmelon, 

sida, copperleaf, 

pigweeds. 



nutsedge and 

pigweed 

Do not apply Command 3ME 

herbicide within 1,200 feet of 

residences, towns & subdivisions, 

commercial vegetable production, 

commercial fruit and nut production, 

plant nurseries, greenhouses. 

Sedges may become problem weeds 

when Command is used. 125 day preharvest 

interval. Check label for 

rotational crop guidelines. 




harvest sweet potatoes within 55 

days after application. Do not apply 

a total of more than 48 oz. of Fusilade 

DX per acre per season. Do not 

apply to grasses that are stressed. 




coverage. Do not apply Poast 

within 30 days of harvest. Do not 

apply more than 2.5 pts/A/season. 

Do not apply to grasses under stress. 

Use with caution when temperatures 

exceed 90°F and the relative humidity 

is 60% or higher or when 

temperatures exceed 100°F. 




expected in 1 hour. Days to harvest - 

30 days. 

Do not apply post-transplant as 

foliar burn will occur. Will suppress 

annual sedges under certain 

conditions. 

Keep soil disturbance to a minimum 

during the transplant operation. Do 

not plant when wet, cool, and 

unfavorable growing conditions exist. 

Dual may damage weak transplants. 

Apply post directed in a minimum of 

20 gallons of water/acre and minimize 

contact with tomato plants. Will not 

control emerged weeds. Do not apply 

within 90 days of harvest. Apply to top 

of the pressed bed as the last step 

prior to laying plastic. May be used in 

row middles as long as the total 

amount of Dual Magnum applied does 

not exceed the maximum allowed in 

tomato use rate on label. Do not apply 

within 90 days of harvest.



Broadcast 

Tomatoes 4,5,6 (continued) 

Gramoxone Max 

1.3 pt/A 

+ NIS at 1 pt/100 

gal 

or COC at 1 

gal/100 gals 

(0.33-0.5 oz/gal + 

0.33-0.5 oz/gal 

NIS) 


2 pt 

Matrix 25 WDG 

1-2 oz 

Poast 

0.5-1.5 pts 

+2 pts COC 

(1.3-2 oz/gal + 


Sandea 75 DG 

0.5 - 1.0 oz. 

Sandea 75 DG 

0.5 – 1.0 oz 

Select 2EC 

6-16 oz 


COC 

(0.33 - 0.66 oz/gal 

+ 1.3 oz COC) 

Sencor 4 or DF 

0.33-0.66 lb DF 

0.5 - 1 pt 4L 

Rate/Acre 


paraquat 

0.49 lb 

Rimsulfuron 

0.25-0.5 oz 

sethoxydim 

0.1-0.3 lb 


concentrate 

Halosulfuron-methyl 

0.024 – 0.048 lbs. 

halosulfuron 

0.024-0.048 lb 

clethodim 

0.9-0.105 lb 

metribuzin 

0.25- 0.5 lb 

Time To Apply 

Post transplant post 

emergence directed spray 

Apply after the tomato 

plants have at least tow true 

leaves. 

Postemergence.Before 



treatments. Check label for 

the recommended time of 

application. 

Preemergence or 

Pre-transplant to soil 

surface. Also, can be used 

Pre-transplant under and 

plastic and row middles. 

Postemergence overtop 14 

days after transplanting. 

Can be applied to row 

middles 30 days before 

harvest. 




incorporate 

124 



Emerged annual 


and grasses. Topkill 

& suppression 

of perennials 


weeds. 

Annual and 



nutsedge and some 



30 days of harvest. 


nutsedge and 



30 days of harvest 

Annual and 



weeds and some 

grasses 


harvest. Apply as postdirected spray 

between rows when beds are covered 

with plastic mulch or bare ground. 

Apply using shields to avoid contact 

with crop plants. Use 20-100 gals of 

water/A. Do not apply more than 3 

times per season. Do not allow 

animals to graze on treated areas. 

Do not exceed 30 psi nozzle pressure 

or spray under conditions that may 

cause excessive drift. 

Apply in tomatoes after the crops 

have at least 2 true leaves and weeds 

are 1 inch or lees and activity 

growing. Add NIS at 1 qt per 100 gal 

of spray solution. Do not apply within 

45 days of tomato harvest. See label 

for further instructions 


volume (5-20 gals/A) and boom 

height to ensure thorough coverage. 


harvest. D o not apply more than 4.5 

pts/A/season. Potential leaf injury 

may occur when temperatures 

exceed 90°F and the relative humidity 

is 60% or higher or when 

temperatures exceed 100°F. Do not 

apply if rainfall is expected within one 

hour following application. Do not 

apply to grasses under stress. 

For Pre-transplant applications under 

plastic mulch, apply to pre-formed 

beds just prior to plastic mulch and 

delay transplanting at least 7 days. 

Early- season applications will give 

postemergence and preemergence 

weed control. Use the 1.0 oz. rate for 

preemergence control in row middles. 

Use the 1 oz./A rate for row middles. 

Use NIS at 1 qt/100 gal of spray. 

Nutsedge may require 2 applications. 

If a second application is needed, 

spot treat only weed infested areas. 




expected in 1 hour. Do not apply 

within 20 days of harvest. Rates vary 

by grass species and growth stage. 

Preplant incorporate; apply dosage in 

10-40 gals water per acre as a 

broadcast spray to the soil surface 

immediately before transplanting. 

Incorporate to a depth of 2-4" with 

equipment mixing the chemical into 

the soil. Check label for tank mixes 

with other herbicides.



Broadcast 

Tomatoes 4,5,6 (continued) 

Sencor 4L or DF 

0.5-0.75 pt 4L 

OR 

0.33-0.5 lb DF 

Sencor 4L or DF 

1-2 pt 4L 

OR 

0.66-1.33 lb DF 

Tillam 6-E 

2.66-6.66 qt 

Aim 

2 EC at 0.75-1.5 oz 

40 DF at .33-1.0 oz 





Trific 60DF, 

Trilin 4EC 

4EC 




Rate/Acre 


metribuzin 

0.25-0.5 lb 

metribuzin 

0.5-1 lb 

pebulate 

4-10 lb 


0.012 – 0.024 lb. 

trifluralin 

0.5-1 lb 

60 DF 




Time To Apply 

Postemergence. Broadcast 

spray on established 

tomatoes 5-6 leaf stage. 

Postemergence.Directed 

spray on established 

tomatoes. Do not allow 

spray to contact tomato 

foliage. 

125 




weeds and annual 

grasses 


weeds and annual 

grasses 

Preplant incorporated. Some broadleaf 

weeds, annual 

grasses, purple 

and yellow 

nutsedge 



sprayers 


incorporate. Post plant 

directed spray, 

incorporated. 

Most emerged 




broad-leaf weeds 

and seedling 

johnsongrass 

Use on established tomatoes only. 

Apply specified dosage 20-75 gal 

water/A as a directed spray in one or 

more applications with a minimum of 

14 days between applications. 

This method of treatment is 

recommended for use in fields with a 

history of severe weed pressure or in 

fields infested with hard to control 

weeds. Do not apply within 7 days 

of harvest. Do not treat seeded or 

transplanted tomatoes until plants 

have reached the 5 - 6 leaf stage or 

until transplants have recovered from 

shock and new growth is evident. Do 

not apply within 3 days after period of 

cool, wet or cloudy weather or crop 

injury will occur. Do not apply to 

established tomatoes within 24 hours 

of application of other pesticides. 

Incorporate immediately after 

application. Tillam can be used prior 

to mechanical transplanting. Check 

label for tank-mixes with other 

herbicides. Transplants may be set 

by hand if chemical resistant gloves 

are worn. 







Incorporate thoroughly into top 2" of 

soil just before planting. Apply as a 

directed spray between rows and 

beneath plant and incorporate. 


herbicides.

1 Apply specific dosage of herbicide in 50-100 gals. water per acre. 

Footnotes 

126 


2 Better results have been obtained with incorporated herbicides when chemicals are applied broadcast and incorporated at the correct 

depth. The rows are then pulled up and planted. 

3 Beans, beets, carrots, cole crops, garlic, greens, lettuce, okra, onions, Irish potatoes, spinach, sweet corn and sweet potatoes. 

Various brands of Glyphosate – Rattler, Touchdown, Glyphomax, Glyphosate, Roundup UltraMax, Roundup Ultra. Check product label 

for rates. May be used before planting or before emergence of crop. Application should be made on a spray-to-wet basis, but not to 

point of runoff. Prior to transplanting crops into plastic mulch, remove product residue from plastic. 

4 Beans, carrots, cole crops, cucumbers, eggplant, greens, lettuce, melons, onions, peppers, Irish potatoes, pumpkins, squash, sweet 

corn and tomatoes. 

paraquat 

0.49 lb 

Gramoxone Max 

1.3 pt OR 

+ NIS 1- 2 pt/100gal 

OR 

COC at 1 gal/100gal 

(0.33-0.66 oz/gal + 

0.33-0.5 oz/gal NIS) 


2-4 pt 

Preplant 

preemergence 

Emerged small 


and grasses 

Apply sufficient water to get thorough coverage 

(20-60 gal/A). Will kill emerged annual weeds and 

suppress or top kill perennials. Planting should 

be done with a minimum amount of soil 

disturbance. 

5 Carrots, Irish potatoes, onions, cabbage, cauliflower, pepper, tomato, cantaloupe, squash, watermelon, other cucurbits, broccoli 

and garlic. 

oxyfluorfen 

0.25-0.50 lb 

6 Vegetables 

paraquat 

0.6 – 0.94 lb 

7 Vegetables 

Carfentrazone 

0.012 – 0.024 

lbs. ai/A 

Goal 1.6E 

1.25-2.5 pt/A 

Goal 2XL 

Gramoxone Max 

1.6 – 2.5 pt + 

1 qt NIS/100 gal 


2.4-3.7 pt 

Aim 2 EC 

0.75 – 1.5 oz. 

Fallow bed 

treatment 

Post harvest 

desiccation 

Winter annual 


Apply to clean, smooth, established beds in fall. 

One-fourth inch of rainfall is needed to activate 

chemicals. Check label for treatment to planting 

interval for different vegetable crops. Fallow beds 

must be worked at least 2.5" deep prior to 

planting. 

Vegetable crop Broadcast spray over the top of plants following 

residue after harvest harvest. Do not graze livestock in treated area. 

Do not use treated vegetables for human or 

animal consumption. Thorough coverage is 

required to ensure maximum herbicide burndown. 

Prior to planting or Emerged broadleaf 

emergence of crop. weeds less than 4” 

tall or rosettes less 

than 3“ across. 

Coverage is essential for good weed control. 

Does not control grasses. Can be tank mixed with 

other burn down chemicals.



Broadcast 

TREE INJECTOR 

2,4-D amine concentrate 

(4 lb/gal material) 

Chopper 

8 - 12 fl oz/gal water or 

diesel. Apply 1 ml per 

injection or cut at 1" 

interval 

glyphosate 

1 ml per 2-3" DBH 

Tordon 101R or RTU 

1.0 ml of undiluted 

material inject at 2-3" 

intervals. 

SOIL 

Spike 20P at 

5 - 20 lb 

Spike 80WP 

1.25 - 6.0 lb. 

Topsite 2.5G 

200 lb 

Velpar 90SP or Velpar L 

4 - 8 lbs or 1.8 gal to 3.6 

gal in 50 - 200 gal of 

water + surfactant 

WK or Pronone 10G at 5 

- 30 lbs 

Velpar L undiluted at 

4 - 8 ml per 2" stem 

diameter. 

Basal Bark Treatment 

Crossbow at 115 fl oz 

plus 13 fl oz (makes 1 

gal finished spray) 

Garlon 4 at 25 oz 

+ diesel at 90 fl oz 

+ Cide Kick at 12 fl oz 

(makes 1 gal finished 

spray) 

Weedone CB 

5 gal 

Rate/Acre 

Active 

Ingredient 

1.0 - 2.0 ml. 

spacings in 

spring and 

early summer 

imazapyr 

2 lb/gal 

glyphosate 

4 lb/gal 

amine 2,4-D 

plus picloram 

tebuthiuron 

1 - 4 lb 

imazapyr 0.5% 

+ diuron 2.0 G 

hexazinone at 

3.6 - 6.3 lb 

+ surfactant 

triclopyr 1 

lb/gal plus 2,4- 

D 2 lb/gal plus 

surfactant* 

triclopyr 4 

lb/gal 

+ Cide Kick* 

2,4DP 

+ 2,4D 

Time To Apply 

WOODY PLANTS 

All seasons but best 

results in spring and 

early summer 



127 


Most oaks, hickory, 

pecan, hawthorn, 

elm, and 

waterlocust. 

Hard to kill trees 

require continuous 

cuts. 

Year around Most hardwoods. 

Pines are resistant 

From full leaf 

expansion until 

leaf drop in fall 

Best results in 

spring and summer 

Any time the ground 

is not frozen 

Oaks, sweetgum, 

poplar and 

sycamore 

Remarks 

Rates apply to trees 4-9 inches in diameter 

measured at breast height (DBH). The 

injector bit must penetrate inner bark. Make 

each injection at ground line (473 ml = 1 pt). 

Hatchet and squirt bottles may also be used. 

Legumes (locusts) are not controlled 

The injector bit must penetrate inner bark. 

Most species Maple, blackgum, hollies, hickory and 

dogwood are more difficult to control. To 

control these species, apply in continuous cut. 

Most woody brush 

and trees 

Distribute pellets uniformly. 

Year around Most species Some legumes are resistant. 

Apply between later 

winter and early 

summer 

Apply between later 

winter and early 

summer 

Willow, oak, gum, 

and other trees and 

brushes 

Willow, oak, maple, 

and other trees and 

brushes 

Same as above Same as above. 

Very effective on 

briars and multiflora 

rose 

Year round Most hardwoods up 

to 4" DBH. Better 

on thin bark species 

Spring through fall. Most southern 

hardwoods up to 4" 

DBH 

* Research has shown Penetrator may be substituted for Cide Kick as a surfactant. 

Apply Velpar with handgun as individual stem 

treatments or as narrow bands 4 to 6 feet 

apart. Follow instructions on label. Apply 

Pronone 10G by hand or with spreader. 

Apply by "spot gun" to the soil at base of the 

stem. 

Apply as basal spray or with spot gun as thinline 

solid stream at 3-5 ml/second. 

Apply by hand with backpack sprayer as a 

narrow band or mist to lower 12” of stem. 

May also be applied with a spot gun set to 

deliver 3-5 ml/sec as a solid stream. 

Apply with hand pump sprayer to lower 18" - 

36" of stem.



Broadcast 

FOLIAGE SPRAY 

Arsenal 

2.0 - 6.0 pt 

Brush Buster 

0.5 - 1.0 gal per 50 gal 

of spray by ground or 

3.0 gal/A by air 

Crossbow 

1.0 - 1.5 gal/100 gal 

water 

Escort XP 

1 - 4 oz 

Garlon 4 

1.0 - 2.0 qt 

glyphosate 

2 - 5 qt/A 

or 1.0 - 2.0% solution 

Krenite 

1 1/2 - 3 gal in 50 - 300 

gal of water 

plus surfactant 

Oust XP 

2 - 4 oz 

Transline 

0.25 - 1.0 pt 

Vista 

0.33 - 1.33 pt 

Rate/Acre 

Active 

Ingredient 

imazapyr 

dicamba 

0.5 - 1 lb 

+ 2,4-D 

2.0 – 6 lb 

triclopyr 

1.0 - 1.5 lb 

+ butoxyethyl 

2,4-D 

2.0 - 3.0 lb 

metsulfuron 

methyl 

0.04 - 0.16 lb 

triclopyr 

1.0 - 2.0 lb 

glyphosate 

2 - 5 lb 

fosamine 

6 - 12 lb 

+ surfactant 

sulfometuron 

methyl 

0.09 - 0.36 lb 

clopyralid 

0.1 - 0.38 lb 

fluroxypyr 

0.14 - 0.25 lb 

Time To Apply 

At full-leaf in spring 

or summer. 

Apply after leaves 

are fully developed 

and until 3 weeks 

before frost. 


or summer. 

When brush is 



or summer. 

Later summer and 

fall while plants are 


Apply in the 2 month 

period prior to fall 

leaf coloration. 




or summer. 


or summer. 

CONTROL OF POISON IVY AND OTHER VINES ON TREE TRUNK 

Amitrol-T 

3 oz/3 gal water plus 

3 tablespoons surfactant 

Gramoxone Max 

7 TBS/gal water plus 

1 TBS surfactant 

Roundup Ultra 

4 - 5 qt/A broadcast 

or a 2.0% solution spray to wet. 

Vine-X 

Ready to use 



128 


Remarks 

Most woody plants Good residual. 

See Brush Buster 

label 

Most woody plants. 

Especially good 

on briars, willow and 

tallow 

Dicamba and amine 2,4-D may be tank-mixed 

in the proportions listed under active 

ingredients. See label for precautions. 

Spray to give thorough coverage. Avoid drift 

to desirable vegetation. 

Oaks, ash, elm and Can be used over top of loblolly and slash 

other woody species pine for conifer release and preplant for site 

preparation. 

Most woody plants Spray to give thorough coverage. Avoid drift 

to desirable vegetation. Can be used in 2,4-D 

restricted areas. 

Many trees, brush 

and herbaceous 

weeds 

Willow and certain 

other hardwoods 

Many grass and 

broadleaf species. 

Good on legume 

species 

Most herbaceous 

weeds and certain 

woody plants 

May be aerially applied in 5-15 gpa water. 

Use 10-40 gpa water for ground rig. For 

percent solution, spray to wet. 

Ground application only on ditchbanks. Read 

label for specific instructions. 

Can be used over top of loblolly, longleaf and 

slash pine for conifer release and preplant for 

site preparation. 



REFER TO LABEL FOR COMPLETE INSTRUCTIONS. Cut vine and spray foliage around the 

base of tree. Do not drench soil. Apply when ivy or other vines are in full leaf. Prevent drift. 

More than 1 application may be required. 

REFER TO LABEL FOR COMPLETE INSTRUCTIONS. A non-selective, contact herbicide. 

Spray foliage of vine around base of tree after cutting vine. Do not allow drift to contact foliage of 

desirable plants. Thorough coverage of undesirable plants is necessary, but avoid drenching soil. 

If sprayed on the tree trunk, be sure that bark is well developed and shows no green. Avoid 

excessive wetting. Even under favorable conditions injury may occur. 

Apply to actively growing plants before leaves develop fall leaf color. Repeat if required. Do not 

allow spray to contact desirable foliage. 

Product comes ready to use with built-in brush type applicator tip. Follow label instructions. 

Excellent on poison ivy and bush killer vine. If used correctly will not injure adjacent plants.

HERBICIDE PREMIXES 

129 


A herbicide premix is a mixture of two or more herbicides formulated together in the same container by the chemical 

manufacturer or re-formulator. Advantages of using premixes include potential reduction in the amount of packaging material 

generated from herbicide application and potential reduction in the cost per unit of active ingredient. A disadvantage of a 

premix may be that the proportions of the active ingredients may not be correct for use in certain situations and therefore may 

require the addition of more active ingredients. 

Use the following premix tables as general information, to be confirmed by the label affixed to the herbicide container. Pay 

close attention to the herbicide trade name; some may seem very similar, but may contain very different active ingredients. 

The use of a similar but improper herbicide for a particular purpose may result in unanticipated field observations after 

herbicide application ranging from no weed control to crop death. Additional premixes, other than those listed in this table, 

may be available to growers. Note that some herbicides may be used in more than one crop and some of the listed herbicide 

premixes are not currently recommended by the LSU Agricultural Center or may not be particularly suitable for use in 

Louisiana. 

HERBICIDE PREMIXES (Liquid) 

Herbicide Trade Name 

Arrosolo ordram = 3.0 

propanil = 3.0 

Backdraft imazaquin = 0.25 

glyphosate = 1.25 

Bicep Lite II Magnum S-metolachlor = 3.33 

atrazine = 2.67 

Broadstrike + Dual metolachlor = 7.47 

flumetsulam = 0.20 

Broadstrike + Treflan flumetsulam = 0.25 

treflan = 3.4 

Bronco alachlor 2.6 

glyphosate = 1.4 

Bullet alachlor = 2.5 


Conclude Xact B 

Conclude Xact G 

Components 

(lb ai/gallon formulation) Herbicide Trade Name 

bentazon = 2.67 

aciflurofen = 1.33 

sethoxydim = 2.0 

Confront triclopyr = 2.25 

clopyralid = 0.75 

Crossbow triclopyr = 1.0 

2,4-D = 2.0 

Double play EPTC = 5.6 

acetochlor = 3.0 

Duet propanil = 4 

bensulfuron = 14 grams 

Exceed prosulfuron = 0.285 

primisulfuron = 0.285 

Freedom alachlor = 2.67 

trifluralin = 0.33 

Fultime acetochlor = 2.4 


Fusion fluazifop = 2.0 

fenoxaprop = 0.56 

Components 

(lb ai/gallon formulation) 

Grazon P+D picloram = 0.54 

2,4-D = 2 

Guardsman Max dimethenamid = 1.7 


G-Max Lite dimethenamid = 2.25 


Harness Xtra acetochlor = 4.3 


Journey glyphosate = 1.5 

imazapic = 0.75 

Laddok S-12 bentazon = 2.5 


Lariat alachlor = 2.5 


Lightning imazethapyr = 0.084 

imazapyr = 0.028 

Lumax s-metolachlor = 2.68 


mesotrione = 0.268 

Marksman dicamba = 1.1 


Pursuit Plus EC imazethapyr = 0.2 

pendimethalin = 2.70 

Sequence glyphosate = 2.25 

s-metolachlor = 3.0 

Squadron imazaquin = 0.33 

pendimethalin = 2.00 

Storm bentazon = 2.67 

basagran = 1.33 

Surmount picloram = 1.19 

fluroxypyr = 0.96 

Typhoon fluazifop = 0.47 

fomesafen = 0.94 

Weedmaster dicamba = 1.0 

2,4-D = 2.0

HERBICIDE PREMIXES (Dry) 

Herbicide Trade 

Name 

Components 

(% ai/lb formulation) 

Authority Broadleaf sulfentrazone = 46.9 

chlorimuron = 9.4 

Basis rimsulfuron = 50 

thifensulfuron = 25 

Canopy 

Canopy SP 

Canopy XL 


metribuzin - 64.3 


metribuzin - 50 


sulfentrazone = 46.9 

Cimarron Max dicamba = 1 lb/gal 

2,4-D = 2.87 lb/Gal 

metsulfuron = 0.75 

Celebrity Plus dicamba = 46.6 

diflufenzopyr = 18.1 

nicosulfuron = 10.6 

Distinct diflufenzopyr = 0.20 

dicamba = 0.50 

Exceed prosulfuron = 28.5 

primisulfuron = 28.5 

Finesse chlorsulfuron = 62.5 

metsulfuron = 12.5 

Frontrow 

(co-pak of First Rate 

and flumetsulam 

cloransulam-methyl = 84 

flumetsulam = 80 

*Use only on soybeans designated as “STS” varieties. 

130 


Herbicide Trade 

Name 

Components 

(% ai/lb formulation) 

Harmony Extra thifensulfuron = 50 

tribenuron = 25 

Hornet clopyralid = 60 

flumetsulam = 18.5 

K-4 (Velpar K-4 Max) Hexazinone = 13.2 

diuron = 46.8 

Krovar bromacil = 40 

diuron = 40 

Lightning imazethapyr = 52.5 

imazapyr = 17.5 

Oustar hexazinone = 63.2 

sulfometuron = 11.8 

Sahara imazapyr = 7.78 

diuron = 62.22 

Snapshot trifluralin = 2 

isoxaben = 0.5 

Steadfast 

nicosulfuron = 50 

rimsulfuron = 25 

Steadfast ATZ nicosulfuron = 2.7 

rimsulfuron = 1.3 


Suprend prometryne = 79.3 

trifloxysufuron = 0.7 

Synchrony XP 


thifensulfuron = 6.9

131 


RECROP INTERVALS FOR SOME HERBICIDES USED IN LOUISIANA 

Below is a list of commonly used herbicides in Louisiana that have rotational crop restrictions. When herbicides are applied (alone, 

as a tank mix, or in a sequential program), follow the recrop interval that is most restrictive for any applied herbicide. Soil pH, 

among other considerations, may affect herbicide selection. Extremes in environmental conditions, such as lower than normal 

temperature and/or rainfall after herbicide application, in addition to other factors, may affect the recrop interval and may increase 

the potential for injury. Environmental conditions, such as temperature and rainfall after application, may affect the recrop interval. 

These listings are minimum intervals between herbicide application and recropping, assuming herbicide application is at the proper 

rate and application timing. The label should always be consulted prior to use to determine precautions, conditions or other 

restrictions that may alter the recrop intervals. 

In the "ROTATE TO" column: 

A. Numbers refer to months (m), days (d) or year (yr) that must pass between herbicide application and planting the next crop. 

B. “None” indicates that no recrop interval for the following crop was stated on the label. 

C. Following spring or "2 springs following application" are self-explanatory. 

Rotation interval 

Corn Herbicide Applied Cotton Soybeans Rice Grain sorghum Wheat 

Accent-depends on soil pH 10m 15d 18m 10 or 18m 4m 

Aatrex Nine-O following spring following spring 2yr none 1yr 

Beacon 8m 8m 8m 8m 3m 

Bicep II, Bicep Magnum following spring following spring 15m none 3m 

Broadstrike + Dual 22m none 9m 18m 4.5m 

Clarity 3m 3m 3m none none 

Dual Magnum 


none none following spring none 4.5m 

Exceed 10m none 10m 10m 3m 

G-Max Lite following year following year 2yr none following year 

Guardsman Max following year following year 2yr none following year 

Harness Extra 

Harness 

2 springs after 

application 

Hornet 18m 10.5 or 18m 

see label 

Lightning - see label 18 or 9.5m: 

depends on rainfall 

following spring 2yr following spring 1yr 

8.5m depends on 

environment 

6m 12m 4m 

40m 18m 4m 

Lorox DF/Linex 4m 4m 4m 4m 4m 

Outlook following spring none following spring following spring 4m 

Permit 4m 9m 2m 2m 2m 

Python WDG 18m None 6m 

Prowl 3.3EC none none none none 4m 

Resolve DF (1 oz.) 10m 10m 10m (pH < 6.5) 10m 4m 

Resolve DF (1-2 oz.) 10m 10m 18m 18m 4m 


Glyphomax Plus, others 

none none none none none 

Steadfast 10m 15d 10-18m 10-18m 4m 

Steadfast ATZ 10m 10m 18m 18m 10m 

Surpass 100 2 springs after 

application 

following spring 2yr following spring 4m 

Weedar 64 3m following spring none none none

132 



Cotton Herbicide Applied Soybean Corn Rice Wheat Grain sorghum 

Assure II none 4m 4m 120d 120d 

Buctril 180d 30d 180d 30d 30d 

Cobra none none none none none 

Command 3ME none 9m 9m 12m 1 9m 

Cotoran/Meturon 6m 6m 6m 6m 6m 

Direx/Karmex 4m to 1yr 2 4m to next yr 2 4m to 1yr 2 4m to 1yr 2 4m to next yr 2 

Dual none none spring 4.5m none 

Envoke 7m 7m 7m 3m 7m 

Fusilade DX none 2m 2m 2m 2m 

Fusion none 2m 2m 2m 2m 

Goal 60d 10m 10m 10m 10m 

Ignite 0d 0d 120d 70d 70d 

Linex 4m 4m 4m 4m 4m 

MSMA/DSMA none none none none none 

Prometryne (Caparol, Cotton-Pro) next yr next yr next yr next yr 3 next yr 

Prowl/Pendimax none none none 4m none 

Roundup, others none none none none none 

Select none none none none none 

Staple 10m 9m 4 9m 4m 2yr 

Suprend next yr next yr next yr next yr 3 next yr 

Trifluralin none none none none none 

Valor (layby application) none 30d 30d 30d 30d 

Zorial 45d 16m 16m 16m 5 16m 

1 Wheat may be planted as a cover crop but may not be harvested for food, feed, or grazed if planted less than 9 m after application. 

2 Interval depends on use pattern (PRE, Post, band or broadcast). Consult label for exact intervals. 

3 Wheat may be planted for a cover crop the Fall following application, but may not be harvested for food or feed. 

4 Can be planted the following year if Staple rate was 1.8 oz/A and applied to 50% of the row and 

ground tilled before corn is planted. 

5 Wheat or other small grains can be planted as a cover crop or to prevent soil erosion, but cannot be harvested for food or feed.

133 



Rice Herbicide Applied Cotton Soybeans Corn Grain sorghum Wheat 

Aim none none none none none 

Arrosolo - - - 

Basagran none none none none none 

Beyond 9 m none 8.5 m 9 m 3 m 

Blazer none none none none none 

Bolero 6m 6m 6m 6m 6m 

Clearpath 18 m 10 m 10 m 18 m 10 m 

Facet DF or GR 10m 10m 10m 10m 10m 

Grandstand R 4m 4m 4m 4m 4m 

Grasp 3m 3m 3m 3m 3m 

Londax 4m 4m 4m 4m 4m 

NewPath 18m none 8.5m 18m 4m 

Ordram 8E or 15G - - - 

Permit 4m 9m none following spring 2m 

Prowl none none none none none 

Stam - - - 

Weedar 64 3m following spring none none none

134 



Soybean Herbicide Applied Cotton Corn Rice Grain sorghum Wheat 

Authority Broadleaf or 

Canopy XL (see label) 

18 or 30m 10 or 18m 10 or 18m 18m 4m 

Assure II none 4m 4m 4m 4m 

Basagran none none none none none 

Broadstrike + Dual 22m none 9m 18m 4.5m 

Broadstrike + Treflan 18m 8m 6m 18m 4m 

Canopy * 

Soil pH 7.0-7.5 

10m 

18m 

9/10m (non-IR) 

18m (non-IR) 

8m (IR: soil pH up 

to 7.5) 

Classic 8m 7m 9m 9m 3m 

Cobra none none none none none 

Commence 9m 9m 9m 12m 12m 

Command 3ME 9m 9m 9m 9m 12m 

Firstrate 9m 9m 9m 9m 4m 

Flexstar HL 10m 10m 10m 10m 4m 

FrontRow 9m 9m see label 9m 4.5m 

Fusilade DX none 2m 2m 2m 2m 

Fusion none 2m 2m 2m 2m 

Lexone, Sencor 8m 4m 8m 12m 4m 

Lorox/Linex 4m none 4m none 4m 

Prowl/Pendimax none none none none none 

Pursuit 70DG 18m 8.5m 1 40m 1 18m 4m 

Reflex 10m 10m 10m 10m 4m 

Scepter 70DG 18m 9.5m following spring 11m 4m 

Select none none none none none 

10m 

18m 

Squadron 18m 9.5m spring following 

application 

Strongarm 18m none 6m 

Synchrony STS 8m 7m 9m 

10m 

18m 

4m 

4m 

11m 4m 

Typhoon 10m 10m 10m 18m 4m 

Ultra Blazer none none none none none 

Valor 30d 30d 30d 30d 30d 

* NOTE: Rotation interval depends primarily upon Canopy rate and soil pH. Consult the label. 

1 No rotation restrictions for IMI corn or IMI rice.

CALIBRATION PROCEDURES 

Two calibration procedures will be shown. Use the one that fits your needs best. 

135 


Calibration Procedure Number 1. This procedure will calibrate your sprayer to apply 1/2 gallon of 

spray per inch of band width per acre. This is a satisfactory procedure for applying a set gallonage of 

spray per acre. 

Step 1. Select band width from column 1, Calibration Table, below. Note that column 2 is the gallons 

to be applied per acre on weeds in the band - 1/2 gallon per inch of band width. 

Step 2. Measure off distance in the field found in column 3 to the right of your band width. For a 12inch 

band, measure off 273 feet. 

Step 3. Time the sprayer in seconds as it travels over distance measured in step 2. Record the time 

carefully. The gear and throttle setting used should be the same as for spraying. 

Step 4. Put in correct size nozzle tips. Suggested nozzle sizes are found in column 4 for 

preemergence and column 5 for postemergence. Use 65- to 80- degree flat fan nozzle tips, properly 

screened. 

Step 5. Adjust pressure to catch 1 pint of liquid per row in the same time as recorded in step 3. 

Spraying pressure should normally be between 20 and 35 psi. Change nozzle tips if pressure is too 

low or high. 

Step 6. Adjust nozzles to give coverage of weeds in the band area. Final adjustment must be made 

for weed and row conditions. 

Calibration Table 

1 

Band 

Width 

Inches 

2 

Total 

Solution 

in gallons/Acre 

3 

Distance in Feet to 

Apply One Pint to 

Each Row 

4 

Preemergence 

Nozzle Size* (Range) 

5 

Postemergence 

Nozzle Size* 

(Range) 

10 5 327 8001E - 8002E 800067 - 8001 

12 6 273 8002E - 8003E 8001 - 80015 

14 7 233 8002E - 8003E 8001 - 80015 

16 8 204 8002E - 8004E 8001 - 8002 

20 10 164 8003E - 8005E 80015 - 8002 

Broadcast 20 82 8003 - 8005 80015 - 8002 

*Catch the PINT of spray from all nozzles on the row. Nozzle sizes shown are based on field speeds of 4 

to 6 miles per hour. Similar nozzle sizes are available from all manufacturers. Use of the nozzle listing 

above does not necessarily imply a recommendation of that brand only.

136 


Calibration Procedure Number 2: If for some reason you wish to apply a rate of spray other than 

that shown in Table 1, the following procedure will be of interest to you. Tests have shown that 

broadcast spray rates ranging from 15 to 40 gallons per acre give good results. Smaller rates are 

more difficult to apply accurately. 

This procedure determines the volume of spray your sprayer is applying. The 80-degree flat fan 

nozzles ranging in size from 8002E to 8005E for preemergence and 8002 to 8005 for postemergence 

application or their equivalent should be used. 

Step 1. Measure off the number of feet of row for the respective row spacing: 

Row Spacing (Inches) Row Length Measured 

(Feet) 

30 136 

32 127 

34 120 

36 114 

38 108 

40 102 

42 97 

48 85 

60 68 

Step 2. Time the sprayer in seconds as it travels over the distance measured above and collect the 

spray from all nozzles on one row in the same length of time. The throttle setting used both for timing the 

distance traveled and for collecting the spray should be the same as that to be used for spraying. Collect 

the spray from all nozzles on one row for the row length measured and record in fluid ounces the quantity 

of spray collected. Each fluid ounce of spray collected is equivalent to 1 gallon per acre of crop. 

When spraying vegetable transplants, apply 1 gallon of spray volume per inch of band width treated 

instead of the usual 1/2 gallon per inch rate. 

To determine the amount of commercial herbicide to apply on a band, regardless of row width, use the 

following equation: 

[band width (in) / row width (in)] X rate/A broadcast = amount needed for band treatment 

Ex. [12" band / 36" row] X 3.0 pints/A broadcast = 1.0 pint to treat the band on 1 acre of land

Nozzle types and suggested uses. 

Nozzle 

Type 

Spray Pattern Pressure 

(psi) 

Flat fan Fan-like pattern of medium droplet 

size. Not uniform across the pattern, 

overlap required 

Even Fan Fan-like pattern similar to flat fan, 

except volume is uniform across the 

entire width. 

Flooding 

Fan 

Off-center 

flat fan 

Large offcenter 

flat 

fan 

137 


20-40 (15-40 

psi for LP 

nozzle) 

Suggested Use(s) 

Pre or Post broadcast booms. 

Numerous types available. 30% 

overlap of spray pattern required 

for uniform coverage. 

20-40 Pre and postemergence. Good for 

banding. 

Wide, flat pattern of course droplets. 10-30 Broadcast applications. Good for 

chemical-fertilizer mixtures or 

layby. Requires 100% overlap. 

Flat fan pattern. Directed to one side 

of tip. Swath width of 12 to 144 

inches. 

Swath width directed to one side from 

12 to 33 feet wide. 

Cone Circular with heavy concentration of 

droplets on outside of pattern. 

Whirl 

chamber 

Rotary 

atomizers 

Boomless 

nozzle 

cluster 

20-40 Post-directed, low profile spraying. 

30-40 Herbicide application to ditches 

and roadsides. 

40-60 Good coverage of foliage. 

Insecticides, fungicides, and 

growth regulator applications. 

Hollow cone pattern. 5-20 Incorporation equipment. 

Flat plane similar to hollow cone. 

More uniform droplet size. 

Wide swath up to 60 feet. Pattern 

easily distorted by wind. High spray 

trajectory. 

Time required to travel given distances 

Device 

dependent 

Low volume applicators. 

20-40 Pastures and broadcast sprayers 

where obstructions to booms exist. 

Travel Time (seconds) 

Speed (mph) 100 ft 200 ft 300 ft 

3.0 23 45 68 

3.5 20 39 58 

4.0 17 34 51 

4.5 15 30 45 

5.0 14 27 41 

6.0 23 34 

7.0 19 29 

8.0 17 26 

9.0 15 23 

10 14 20 

11 19 

12 17

Recommended procedures for reducing pesticide drift* 

138 


Recommended procedure Example Explanation 

Select a nozzle that produces 

coarse droplets 

Use the lower end of the 

pressure range. 

Raindrop, wide-angle full cone, 

flooding. 

Use 20 to 40 psi for Raindrop; 

less than 25 for other types. 

Lower the boom height. Use as low a boom height as 

possible to maintain uniform 

distribution. 

Increase the nozzle size. If normal spray volume is 15 to 

20 gpa, increase to 25 to 30 gpa. 

Spray when wind speeds are 

less than 10 mph and moving 

away from sensitive plants. 

Do not spray when the air is 

completely calm. 

Use drift-control additive when 

needed. 

Leave a buffer zone if sensitive 

plants are downwind. Spray 

buffer zones when wind speed is 

lower. 

Absolutely calm air generally 

occurs in early morning or late 

afternoon. 

Several long-chain polymers are 

available. 

*Prepared by the University of Illinois Cooperative Extension Service 

Use droplets as large as practical 

to provide necessary coverage. 

Higher pressures generate more 

small droplets, increasing drift 

potential. 

Wind speed increases with 

height. Lowering boom height a 

few inches can reduce off-target 

drift. 

Larger capacity nozzles reduce 

off-target deposits. 

More of the spray volume moves 

off-target as wind increases. 

Absolutely calm air reduces air 

mixing, and spray can move 

slowly downwind. 

Drift-control additives increase 

the average droplet size 

produced by the nozzle.

139 


COMMON AND CHEMICAL NAMES OF HERBICIDES 

Common Name Trade Names Chemical Names 

Acetochlor Harness 

Surpass 

Topnotch 

Partner WDG 

2-chloro-N-(ethoxymethyl)-N-(2-ethyl- 

6-methylphenyl)acetamide 

Acifluorfen Ultra Blazer 5[2-chloro-4- 

(trifluoromethyl)phenoxy]-2nitrobenzoic 

acid 

Alachlor Lasso 

Micro-Tech 

Lasso II 

2-chloro-N-(2, 6diethylphenyl)-N- 

(methoxymethyl)acetamide 

Ametryn Evik DF N-ethyl-N’-(1-methylethyl)-6- 

(methylthio)-1,3,5-triazine-2,4diamine 

Amitrole Amitrole-T 

Weedazol 

Asulam Asulox 

Asulam 3.3 

Asulam 

Atrazine Aatrex 4L, NINE-O 

Atrazine 4L, 90DF 

Atrazine 90WDG 

Southern Turf 

others 

Benefin Balan 2.5G 

Balan DF 

Bensulide Betasan 4-E Turf 

Prefar 4-E 

Formulations 

(lb/gal or %) Company 

Emulsifiable 

Concentrate (7.0, 3.2) 

Dry Granular (68%) 

Liquid Concentrate(2.0) UPI 

Emulsifiable liquid (4) 

Granular (15%) 

Water Dispersible 

Granule (76%) 

Dow AgroSciences 

Monsanto 

Monsanto 

Syngenta 

1H-1,2,4-triazol-3-amine Emulsifiable Liquid (4) Bayer ES 

methyl[(4aminophenyl)sulfony]carbamate 

6-chloro-N-ethyl-N’-(1-methylethyl)- 

1,3,5-triazine-2,4-diamine 

N-butyl-N-ethyl-2,6-dinitro-4trifluoromethyl)benzeneamine 

0,0-bis(1-methylethyl) S-[2- 

[(phenylsulfonyl)amino]ethyl] 

phosphorodithioate 

Bensulfuron Londax 2-[[[[[(4,6-dimethoxy-2pyrimidinyl)amino]carbonyl]amino] 

sulfonyl]methyl]benzoic acid 

Bentazon Basagran T/O 

Lescogran 

Basagran 

Bispyribac 

sodium 

3-(1-methylethyl)-(1H)-2,1,3benzothiadiazin-4-(3H)-one2,2dioxide 

Regiment sodium 2,6-bis[(4,6dimethoxypyrimidin-twoyl)oxy]benzoate; 

propanil, N-(3,4dichlorophenyl)propanamide 

Liquid Concentrate 

3.34 

Wettable Powder (80%) 

Suspension 4L 

Dry Flowable (90%) 

Granular (2.5%) 


Emulsifiable Liquid (4) UHS 

Gowan 

Dry Flowable 60% UPI 

Liquid Concentrate(4) 

Soluble Granules (95%) 

Water Soluble Powder 

(80%) 

Bayer CropScience 

Agriliance 

Helena 

UHS 

UHP 

Syngenta 


Makteshim 

Agriliance 

Helena 

UAP 

BASF 

Lesco 

Micro Flo 

Agrilliance 

Valent USA 

Borate-Chlorate Various Various Various Various 

Bromacil Hyvar X 5-bromo-6-methyl-3-(1-methylpropyl)- Wettable Powder (80%) DuPont 

2,4(1H, 3H)pyrimidinedione Water Soluble Powder 

(50%) 

Bromoxynil Buctril 

3,5-dibromo-4-hydroxybenzonitrile Emulsifiable Liquid Bayer CropScience 

Nu Lawn Weeder 

Moxy 

Bromox 

(4,2,0.5) 

MicroFlo 

Maestro D 

Maestro MA 

Nufarm 

Butylate Sutan + 6.7E S-ethyl 

Emulsifiable Liquid (6.7) Micro Flo 

Genate + bis(2methylpropyl)carbamothioate 

Carfentrazone Aim Ethyla,2-dichloro-5-[4-(difluromethyl)- 

4,5-dihydro-3-methyl-5-oxo1H-1,2,4triazol-1-yl]-4fluorobenzenepropanoate 

Emulsifiable Concentrate 

(2) 

FMC


Chlorimuron Classic 

Skirmish 

Chlorimuron + 

Metribuzin 

Chlorimuron + 

Sulfentrazone 

Chlorsulfuron Glean 

Telar 

Clethodim Select 

2-[[[[(4-chloro-6-methoxy-2pyrimidinyl)amino]carbonyl] 

amino] 

sulfonyl]benzoic acid 

140 


Formulations 


Dispersible Granule 

(25%) 

Canopy SP See chlorimuron and metribuzin Dispersible Granule 

(75%) 

Canopy XL See chlorimuron PLUS N-[2,4dichloro-5-[-4-(difluromethyl)-4,5dihydro-3-methyl-5-oxo-1H-1,2,4triazol-1-yl]phenyl]methane 

sulfonamide 

Envoy 

Arrow 

Clethodim 2EC 

Volunteer 

2-chloro-N-[[(4-methoxy-6-methyl- 

1,3,5-triazin-2-yl)amino]carbonyl] 

benzenesulfonamide 

(E,E)-(±)-2-[1-[[(3-chloro-2-propenyl) 

oxy]imino]propyl]-5-[2- 

(ethylthio)propyl]-3-hydroxy-2cyclohexen-1-one 

Cyhalofop Clincher R(+)2-2-(4-(4-cyano-2fluorophenoxy)phenoxy)propanoic 

acid, n-butyl ester 

Clomazone Command 2-(2-chlorophenyl) methyl-4,4dimethyl-3-isoxazlidinone 

Clopyralid Transline 

Stinger 

Lontrel 

Cloransulam - 

methyl 

Cloransulammethyl 

+ 

flumetsulam 

Reclaim 

CuSO4 Blue stone 

Blue vitriol 

DuPont 

FMC 

DuPont 

Dry Flowable (56.3%) DuPont 

Dry Flowable (75%) Dupont 


(0.94 or 2) 

Valent 

Agriliance 

Makteshim 

Micro Flo 

Tenkoz 

Liquid Concentrate (2.38) Dow AgroSciences 

Microencapsulated 

Flowable (3) 

FMC 

Tenkoz 

UAP 

3,6-dichloro-2-pyridinecarboxylic acid Liquid (3 lb ae/gal) Dow AgroSciences 

Firstrate N-(2-carbomethoxy-6-chloro-phenyl)- 

5-ethoxy-7-fluoro(1,2,4) triazolo-[1,5c]pyrimidine-2-sulfonamide 

Frontrow See cloransulam-methyl and 

flumetsulam 

Wettable Granular (84%) Dow AgroSciences 

Wettable Granular 

(84% + 80%) 

Copper sulfate 100% Various 


Cycloate Ro-Neet S-ethyl 

Emulsifiable Liquid (6) Syngenta 

cyclohexylethylcarbamothioate Granular (10%) 

DCPA Dacthal 75W Turf dimethyl 2,3,5,6-tetrachloro-1,4- Flowable Liquid (6.0) Syngenta 

Dacthal Flowable benzenedicarboxylate 

Wettable Powder (75%) Amvac 

Dicamba Banvel 

3-6 dichloro-2-methoxybenzoic acid Liquid Concentrate (4,2,4) BASF 

Banvel SFG 

MicroFlo 

Clarity 

Vanquish 

Syngenta 

Dicamba + Weedmaster See dicamba and amine 2,4-D Emulsifiable Liquid BASF 

amine 2,4-D 

1 + 2.87 lb/gal 

Dichlobenil Casoron 4G 

Norosac 4 

Diclofop Hoelon 3EC (±)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic 

acid 

Dimethenamid Outlook 6.0 

Establish 

Dimethenamid + 

Atrazine 

Guardsman Max 

G-Max-Lite 

Diquat Diquat Herbicide 

Reward 

Reward LS 

2,6-dichlorobenzonitrile Granular (4%) Uniroyal 

PBI Gordon 

2-chloro-N-[(1-methyl-2methoxy)ethyl]-N-(2,4-dimethyl-thien- 

3-yl)-acetamide 

Emulsifiable Liquid (3) Aventis 

Emulsifiable Liquid (6) BASF 

Tenkoz 

See dimethenamid and atrazine Emulsifiable Concentrate 

(2.33 + 2.67) 

(1.7 + 3.3) 

BASF 

6,7-dihydrodipyrido(l,2-a:2',l'-c) 

pyrazinediium ion 

Liquid Concentrate (2) Syngenta


Dithiopyr Dimension EC 

Dimension WSP 

Dimension Ultra 

40WP 

Dimension Ultra 

2 SC 

Diuron Karmex 

Direx 4L 

Direx 80DF 

Diuron DP 

Diruon 80 

Diuron WD 

S,S-dimethyl 2-(difluoromethyl)-4-(2methylpropyl)-6-(triflurormethyl)-3,5pyridinedicarbothioate 

N’(3,4-dichlorophenyl)-N,Ndimethylurea 

141 


Formulations 



(1, 2) 



Flowable (4) 


DuPont 

Griffin 

DuPont 

UAP-Platte 

Makteshim 

DSMA Various disodium methanearsonate Various Various 

Endothal Aquathol 7-oxabicyclo[2.2.1]heptane-2,3dicarboxylic 

acid 

EPTC Eptam 7-E 

Eradicane 6.7-E 

Eptam 20-G 

Eradicane 25-G 

Ethafluralin Sonalan 

Curbit EC 

Sonolan 10G 

Sonolan HFP 

Liquid (2) 

Granular (5%) 

S-ethyl dipropyl carbamothioate Emulsifiable Liquid 

(7, 6.7) 

Granular (20%, 25%) 

N-ethyl-N-(2-methyl-2propenyl)-2,6dinitro-4- 

(trifluoromethyl)benzenamine 

Ethofumesate Prograss (±)-2-ethoxy-2,3-dihydro-3,3dimethyl-5-benzofuranyl 

methanesulfonyl 

Fenoxapropethyl 

Whip 360 

Acclaim Extra 

(±)-2-[4-[(6-chloro-2-benzoxazolyl) 

oxy] phenoxy] propanoic acid 

Flumetsulam Python WDG N-(2,6-difluorophenyl)-5-methyl[1,2,4] 

triazolo[1,5-a]-pyrimidine-2sulfonamide 

Flumetsulam + 

metolachlor 

Flumetsulam + 

trifluralin 

Broadstrike + 

Dual 

Broadstrike + 

Treflan 

Fomesafen Reflex 

Flexstar HC 

Fluazifop-P-butyl Fusilade DX 

Fusilade II Turf + 

Ornamental 

Ornamec 170 

Flumioxazin Valor 

Broadstar 

Sureguard 

Fluometuron Cotoran 

Meturon 4L 

Meturon 80DF 

Flo Met 4L 

Flo Met 80DF 

Flumiclorac 

pentyl ester 

Fluroxypyr Vista 

Rely 

Fosamine, 

ammonium salt 

See flumetsulam and 

metolachlor 

Emulsifiable Liquid (3) 



(1.5) 

Pennwalt 

Syngenta 

Gowan 

UAP 


Bayer ES 

Emulsifiable Liquid (0.57) Bayer CropScience 

Bayer ES 

Wettable Granule (80%) Dow AgroSciences 


(0.20 + 7.47) 

See flumetsulam andTreflan Emulsifiable Concentrate 

(0.25 + 3.4) 

5-[2-chloro-4- 

(trifluoromethyl)phenoxy]-N- 

(methylsulfonyl)-2-nitrobenzamide 

(R)-2-[4-[[5-(trifluoromethyl)-2pyridinyl] 

oxy]phenoxy]propanoic acid 

2-{7-fluoro-3,4-dihydro-3-oxo-4-(2propynyl)-2H-1,4-benzoxazin-6-yl]- 

4,5,6,7-tetrahydro-1H-isoindole- 

1,3(2H)-dione 

N,N-dimethyl-N’-[3trifluoromethyl)phenyl) 

urea 

Resource [2-chloro-4-fluoro-5-(1,3,4,5,6,7hexahydro-1,3-dioxo-2H-isoindol-2yl)phenoxy]acetic 

acid 

[(4-amino-3,5-dichloro-6-fluoro-2pyridinyl)oxy]acetic 

acid 

Krenite S Ammonium 

ethylcarbamoylphosphonate 


(2,1.88) 

Emulsifiable Liquid 

(2.0, 0.125) 

Water Dispersable 

Granule (51%) 

Granule (0.25%) 


Flowable (4) 


(0.86) 



Syngenta 

Syngenta 

PBI Gordon 

Valent 

Syngenta 

DuPont 

MicroFlo 

Valent 

Liquid Concentrate (1.5) DowAgroSciences 

Water Soluble Liquid 

4 lb/gal 

DuPont


Glufosinate Finale 

Liberty 

Derringer 

Derringer F 

Ignite 

Ignite 280 

Glyphosate Roundup Custom 

Roundup Ultra 

Roundup Solu Gran 



RT 

Roundup Ultra Dry 

Rodeo 

Pondmaster 

Glyphos 

Glyphos Extra 

Glyphomax 

Glyphomax Plus 

Gly-Flo 

Glyphosate Original 

Touchdown IQ 

Touchdown Pro 

Honcho 

Rattler 

Glyphosate 

Halosulfuron Manage 

Permit 

Sempra 

Sandea 

2-amino-4-(hydoxymethylphosphinyl) 

butanoic acid 

142 


Formulations 



(1,1.66, 2.34) 

N-(phosphonomethyl)glycine Various formulations with 

varying amounts of active 

ingredient. Some 

formulations have 

surfactants. Check labels 

methyl 5-[[(4,6-dimethoxy-2pyrimidinyl)amino]carbonylaminosulfonyl]-3-chloro-1-methyl-1-H-pyrazol-4carboxylate 


Bayer ES 

Monsanto 

Cheminova 


MicroFlo 

Syngenta 

Dupont 

Dry Granules (75%) Monsanto 

Gowan 

Herbicidal oil Various Naptha derivatives Various 

Hexazinone Velpar DF 3-cyclohexyl-6-(dimethylamino)-1- Dispersible Granules DuPont 

Velpar L 

methyl-l,3,5-triazine-2,4(lH,3H)-dione (75%) 

Velpar ULW DF 

Water Soluble Liquid (2) 

Soluble Granules (75%) 

Imazamox Beyond 2-[4,5-dihydro-4-methyl-4-(1methylethyl)-5-oxo-1H-imidazol-2-yl]-5-(methoxymethyl)-3pyridinecarboxylic 

acid 

Liquid (1.0) BASF 

Imazapyr Chopper 2AS (±)-(2-[4,5-dihydro-4-methyl-4-(1- Liquid Concentrate (2,2,4) BASF 

Arsenal 2,4AC methylethyl)-5-oxo-1H-imidazol-2-yl]- 

Stalker 

3-pyridinecarboxylic acid 

Imazaquin Scepter 70DG 

Image 1.5 LC 

Imazaquin + 

pendimethalin 

2-[4,5-dihydro-4-methyl-4-(1methylethyl)-5-oxo-1H-imidazol-2-yl]- 

3-quinolinecarboxylic acid) 

Dry Flowable (0.7) 

Liquid Concentrate (1.5) 

Squadron see imazaquin and pendimethalin Emulsifiable Concentrate 

(0.33 + 2.0) 

Imazethapyr Pursuit 70DG 2-[4,5-dihydro-4-methyl-4-(1methylethyl)-5-oxo-1H-imidazo1-2-yl]- 

5-ethyl-3-pyridinecarboxylic acid 

Isoxaben Gallery N-[3-(1-ethyl-1-methylpropyl)-5isoxazolyl]-2,6-dimethoxybenzamide 

and isomers 

Lactofen Cobra (±)-2-ethoxy-1methyl— 2-oxoethyl 5- 

[2-chloro-4-(trifluoromethyl)phenoxy]- 

2-nitrobenzoate 

Linuron Lorox DF 

Linex 4L 

N’-(3,4-dichlorophenyl)-N-methoxy-Nmethylurea 

Mecoprop MCPP-4 Amine (±)-2-(4-chloro-2methylphenoxy)propanoic 

acid 

BASF 

BASF 

Dry Flowable (70%) BASF 

Dry Flowable (75%) Dow AgroSciences 

Emulsifiable Liquid (2) Valent USA 


Flowable (4) 

DuPont 

Liquid Concentrate (3.97) SDS Riverside


Mesosulfuronmethyl 

Osprey 2-[[[[(4,6-dimethoxy-2pyrimidinyl)amino]carbonyl]amino]sulf 

onyl]-4- 

[[(methylsulfonyl)amino]methyl]benzoi 

c acid 

Mesotrione Callisto 2-[4-(methylsulfonyl)-2-nitrobenzoyl]- 

1,3-cyclohexanedione 

Metolachlor Dual II 

Dual Magnum 


Metolachlor + 

Atrazine 

Metolachlor + 

Metribuzin 

2-chloro-N-(2-ethyl-6-methylphenyl)- 

N-(2-methoxy-1-methylethyl) 

acetamide 

143 


Formulations 


Dry flowable (4.5) Bayer CropScience 

Flowable (4) Syngenta 

Emulsifiable Liquid (8, 

7.8,7.64) 


Syngenta 

Bicep II 

Bicep Lite II 


See metolachlor and atrazine Flowable (4.5, 5.5, 5.9) Syngenta 

Turbo 8EC See metolachor and metribuzin Emulsifiable Concentrate 

(6.55 + 1.45) 


Makteshim 

Metribuzin Sencor DF 

Sencor 4 

Metribuzin 75DF 

Metsulfuron Ally 

EscortXP 

Cimmaron 

Manor 

Metsulfuron Methyl 

60 DF 

Valuron 60DF 

4-amino-6-(1,1-dimethylethyl)-3- 

(methylthio)-1,2,4-triazin-5(4H)-one 

Methyl 2-[[[[(4-methoxy-6-methyl- 

1,3,5-triazin-2yl)amino]carbonyl]amino]sulfonyl]ben 

zoate 

Molinate Ordram S-ethyl hexahydro-1H-azepine-1carbothioate 


Flowable (4) 



Granules (60%) 


Emulsifiable Liquid(8) 

Monuron Various N’-(4-chlorophenyl)-N,N-dimethylurea Wettable Powder (80%) 

ML (28%) 


DuPont 

Riverdale 

Farm Saver 

Makteshim 

Syngenta 

Various 

MSMA Various monosodium methanearsonate Various Various 

Napropamide Devrinol N,N-diethyl-2-(1naphthalenylenyloxy) 

propanamide 

Nicosulfuron Accent 2-[[[[(4,6-dimethoxy-2pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,Ndimethyl-3-pyridinecarboxamide 

Norflurazon Zorial 

Solicam 

Predict 

Oryzalin Surflan AS 

Oryzalin 4 AS 

Oxadiazon Ronstar 50 WSP 

Ronstar G 

Oxyfluorfen Goal T/O 

Goal 2XL 

Delta Goal 

Goal Tender 

OxiFlo 2 EC 

Galigan 

Galigan Delta 

Paraquat Gramoxone Max 

Cyclone Max 


4-chloro-5-(methylamino)-2-(3- 

(trifluoromethyl)phenyl)-3(2H)pyridazinone4-(dipropylamino)-3,5dinitrobenzenesulfonamide3-[2,4-dichloro-5-(1methylethoxy)phenyl]-5-(1,1dimethylethyl)-1,3,4-oxadiazol-2- 

(3H)-one 

2-chloro-1-(3-ethoxy-4-nitrophenoxy)- 

4-(trifluromethyl) benzene 

Wettable Powder 

(50%)Granular (5%) 


Granule (75%) 



Syngenta 

DuPont 

Syngenta 

Liquid Concentrate (4) Dow AgroSciences 

Farm Saver 

Granular (2%) 

Bayer ES 

Soluble Powder (50%) 


(1.6, 2.0) 

1,1'-dimethyl-4,4'-bipyridinium salt Soluble Liquid 

(3.0, 3.0, 2.0) 

DowAgroSciences 

Farm Saver 

Makteshim 

Syngenta 

PCP Various pentachlorophenol Various Various


Pendimethalin Prowl 

Pendulum 

Pentagon DG 

Prowl H2O 

Pendimax 3. 

Acumen 

Pendimethalin 

N-(l-ethylpropyl)-3,4-dimethyl-2,6dinitrobenzeneamine 

Penoxsulam Grasp 2-(2,2-difluoroethoxy)-N-(5,8dimethoxy 

[1,2,4] 

triazolo[1,5c]pyrimidin-2-yl)-6- 

(trifluoromethyl) benzenesolfonamide 

Picloram Tordon 

TordonK 

Tordon 101 

K salt (4-amino-3,5,6trichloropicolinicacid) 

Primisulfuron Beacon 2-[[[[[4,6-bis(difluoromethoxy)-2pyrimidinyl]amino]carbonyl]amino]sulf 

Prodiamine Barricade 65 WG 

Factor 

Endurance 

onyl]benzoic acid 

2,4 dinitro-N 3 ,N 3 -dipropyl-6- 

(trifluoromethyl)-1,3-benzenediamine 

Prometon Pramitol 6-methoxy-N,N’-bis(1-methylethyl)- 

1,3,5-triazine-2,4-diamine 

Prometryn Caparol 

Pronamide Kerb WSP 

Kerb 50 WP 

N,N’-bis(1-methylethyl)-6- 

(methylthio)-1,3,5-triazine-2,4diamine 

3,5-dichloro (N-1,1-dimethyl-2propynyl)benzamide] 

144 


Formulations 


Emulsifiable Liquid (3.3) 

Dry Granular (60%) 

Granule (2%) 

Liquid (3.8) 

BASF 


Tenkoz 

Helena 

Soluble concentrate (2) Dow AgroSciences 

Granular (2%) 

Liquid (2) 


Granule (75%) 


Syngenta 

Wettable Granular (65%) Syngenta 


(25%) Granular (5%) 



Flowable (4) 

Syngenta 

Syngenta 

Makteshim 

Wettable Powder (50%) Dow AgroSciences 

Propanil Various N-(3,4-dichlorophenyl)propanamide Emulsifiable Liquid (4) Various 

Pyrithiobac Staple LX, SP 2-chloro-6-[(4,6-dimethoxy-2- Soluble Powder (85%) DuPont 

pyrimidinyl)thio] benzoic acid Liquid 3.2 lb ai/gal 

Quinclorac Facet 

3,7-dichloro-8-quinolinecarboxylic Wettable Powder (50%) BASF 

Drive 

acid 

TopPro Specialties 

Quizalofop Assure II 

(±)-2-[4-[(6-chloro-2-quinoxalinyl)oxy] Emulsifiable 

DuPont 

Matador 

phenoxy]propanoic acid 

Concentrate (0.88) FMC 

Targa 

Gowan 

Rimsulfuron Matrix 

N-[[(4,6-dimethoxy-2- 

Dispersible Granule DuPont 

Tranxit 

pyrimidinyl)amino]carbonyl]-3- (25%) 

Shade-Out 

Resolve DF 

(ethylsulfonyl)-2-pyridinesulfonamide 

hoxydim Vantage 

2-[1-(ethoxyimino)butyl]-5-[2- Emulsifiable Liquid BASF 

Prestige 

(ethylthio) propyl]-3-hydroxy-2- (1.0, 1.5, 3.5) 

Micro Flo 

Poast 

Poast HC 

cyclohexen-1-one 

Simazine Princep 4L 6-chloro-N,N’-diethyl-1,3,5-triazine- Flowable (4) 

Syngenta 

Princep Caliber 90 2,4-diamine 

Wettable (90%) UAP-Platte 

Princep Liquid 

Drexel 

Sim-Trol 

Simazine 4L 

Simazine 90 DF 

Agrilliance 

Sodium chlorate Various NaCl03 Various Various 

Sulfometuron Oust XP 2-[[[[(4,6-dimethyl-2- 

Dispersible Granule DuPont 

pyrimidinyl)amino] 

carbonyl]amino]sulfonyl]benzoic acid 

(75%) 

Sulfometuron Oustar See Oust and Velpar Dispersable Granule DuPont 

+ hexazinone 

(75%) 

Tebuthiuron Spike 20P N-[5-(1,1-dimethylethyl)-l,3,4thiadiazol-2-yl)-N,N’-dimethylurea 

Terbacil Sinbar 5-chloro-3-(1,1-dimethylethyl)-6methyl-2,4(1H,3H)-pyrimidinedione 

Thiobencarb Bolero EC S-[(4-chlorophenyl)]methyl] 

diethylcarbamothioate 

Granular (20%) Dow AgroSciences 

Wettable Powder (80%) DuPont 

Emulsifiable 

Liquid (8.0) 

Valent


Triclopyr Garlon 3EC 

Garlon 4 

Crossbow 

Remedy 

Renovate 

Trifloxysulfuronsodium 

Trifluralin Treflan 

Trifluralin 

Trilin 4 

Tri 4 

Trific 

others 

[(3,5,6-trichloro-2-pyridinyl)oxy]acetic 

acid 

Envoke 2-pyridinesulfonamide, N-[[(4,6dimethoxy-2pyrimidinyl)amino]carbonyl]-3-(2,2,2trifluoroethoxy)-, 

monosodium salt, 

monohydrate 

2,6-dinitro-N,N-dipropyl-4- 

(trifluromethyl)benzeneamine 

145 


Formulations 



(3, 1 lb triclopyr + 2 lb 2,4- 

D; 4.0) 

Dispersible granule 

(70%) 

Emulsifiable Liquid (4.5) 

Granular (5%, 10%) 


Syngenta 

Various 

2,4-DB Various 4-(2,4-dichlorophenoxy) butyric acid Various Various 

2,4-D Various (2,4-dichlorophenoxy)acetic acid Amines + Esters 

Liquid and Granular 

Various

CONVERSION FACTORS 

Weights Temperature 

1 U. S. ton = 2,000 lbs = 0.97 metric ton °C = 5/9 (°F – 32) 

1 lb = 16 oz = 453.6 grams = 0.4356 kilograms °F = (9/5 °C) + 32 

1 ounce = 20.35 grams °K = °C + 273.16 

°R = °F – 459.69 

146 


Speed Length 

1 mph = 5,280 ft/hr = 88 ft/minute = 1.467 ft/sec 1 mile = 5280 ft = 1.6093 kilometers 

1 m/sec = 196.85 ft/minute = 2.24 mph 1 yd = 3 ft = 36 inches = 91.44 cm 

1 m/sec = 1.942 knots 1 ft = 12 inches = 30.48 centimeters 

Area 

1 square mile = 640 acres 1 acre =13,068 ft of 40 inch rows 

1 acre = 43,560 feet =13,756 ft of 36 inch rows 

1 acre = 0.405 hectare =14,520 ft of 36 inch rows 

1 hectare = 2.47 acres =16,335 ft of 32 inch rows 

1 hectare = 10,000 m 2 =17,424 ft of 30 inch rows 

1 yard 2 = 9 ft 2 = 0.836 m 2 

1 ft 2 = 144 in 2 = 0.09 m 2 

1 cm 2 = 0.155 in 2 

# Acres = [Length (ft.) x width (ft.)]/43,560 

Liquid Measure 

1 tbsp = 3 tsp (0.5 oz.) 

1 oz = 2 tbsp 

1 cup (l/2 pint) = l6 tbsp (8 oz.) 

1 pint (2 cups) = 32 tbsp (l6 oz. or l lb) (473 ml) 

1 gallon = 231 in 3 = 4 qt = 8 pt = 16 cups = 8.4 lb. water 

1 gallon = 128 fl oz = 3.785 l = 3,785 ml = 3,785 cm 3 

1 qt = 2 pt = 4 cups = 32 oz = 0.946 l = 946 ml 

1 pt = 2 cups = 16 oz = 0.473 l = 473 ml 

1 cup = 8 oz = 0.24 l = 240 ml 

1 fl oz = 2 tbsp = 6 tsp = 1.8 in 3 = 0.02957 l = 29.57 ml 

1 tbsp = 3 tsp = 0.5 oz = 14.78 ml 

1 tsp = 0.166 oz = 4.92 ml 

1 ml = 0.0338 fl oz

147 


RAIN-FREE REQUIREMENTS OF SELECTED HERBICIDES 

Herbicide Rain-free period (hrs) 

2,4-D amine 4 

2,4-D ester 4 

2,4-DB 4 

Accent 4 

Aim 1 

Ally/Escort XP/Manor several 

Arrosolo 6 

Arsenal, others 

Assure II 1 

Basagran 8 

Beacon 4 

Blazer 6 

Buctril 4 

Celebrity 4 

Clarity 4 

Classic 4 

Clearpath 1 

Clincher 2 

Cobra 1/2 

Envoke 3 

Fusilade DX 1 

Fusion 1 

Goal several 

GramoxoneMax/Gramoxone Inteon 1/2 

Grasp 1 

Harmony Extra several 

Hoelon 4 

Liberty/Finale/Ignite/Ignite 280 4 

Londax 4 

MSMA/DSMA 24 

Osprey 4 

Oust (postemerge) several 

Peak 4 

Permit/Sempra/Manage/Sandea 4 

Poast/Poast Plus/Vantage 1 

Reflex/Flexstar 4 

Regiment 8 

Remedy/Garlon/Turflon 4 

Reward 1/2 

Rodeo 6 

Roundup Original 6 

Roundup SoluGran 6 

Roundup Ultra 2 

Roundup Ultra Max 2 

Select 1 

Stam 6 

Staple 4 

Storm 8 

Touchdown IQ 2 

Transline/Stinger/Lontrel 8 

Typhoon 4 

Ultra Blazer 4 

Valor (postemergence) 1 

Vista 1 

Whip/Acclaim/Whip 360 2

148 


RELATIVE TOXICITY OF HERBICIDES TO MAMMALS 

Based on acute oral LD50 Values for Adult White Rat With Technical Material 

Toxicity of Commercial Formulations is Usually Less Than Technical Material 

Common Name or 

Designation 

Some Common 

Trade Names 

LD50 

mg/kg Toxicity* Rating 

Dermal Response 

Rating** 

Weedazol 1,000 6 4 

2,3,6-TBA Trysben, Benzac 1644 4 5 

2,4,5-T Various brands 300 3 4 

2,4-D Various brands 500 4 4 

2,4-D + EPTC Knoxweed 2,7l0 4 4 

2,4-DB Butyrac, Butoxone 500 4 4 

2,4-DEP Falone 850 4 4 

Acetochlor Harness, Surpass 2148 4 4-5 

Acifluorfen Blazer 1370 4 3 

Acrolein Aqualin 46 2 2 

Alachlor Lasso 1200 4 3 

Ametryn Ametryne 965 4 - 

Amiben Amiben, Vegiben 3,500 4 - 

Amitrole Amino Triazole, 5000 4 

Amitrole-T Amitrol-T, Cytrol 5,000 4-5 5 

AMS Ammate 1600 4 5 

AMS Ammate X 3,900 4 5 

Aromatic solvents Various brands -- 3 -- 

Aspirin (For comparison) 750 4 5 

Asulam Asulox >5000 5 4-5 

Atrazine AAtrex 3,080 4 5 

Bandane Bandane 540 4 -- 

Benefin Balan 1,000 5 -- 

Bensulfuron Londax >5000 5 5 

Bensulide Betasan, Pre-san 770 4 -- 

Bentazon Basagran 1100 4 3-4 

Borate Borax, Borascu 2,500 4 4 

Bromacil Hyvar X 5,200 5 4 

Bromoxynil Buctril, Brominil 260 3 4 

Butachlor Machete 2000 4 3 

Butylate Sutan 3,997 4 3 

C-63l3 Maloran 2,150 4 3 

C-6989 Preforan 1,000 6 5 

Carfentrazone Aim 5143 5 5 

Cacodylic acid Ansar 560, l20 1,000 4 -- 

Calcium arsenate Various brands 35 2 4 

Calcium cyanamide Aero-Cyanamide 1,400 4 -- 

CDAA Randox 750 4 2 

CDEC Vegadex 850 4 3 

Chlorimuron Classic >4000 4 5

149 


Common Name or Some Common 

LD50 


Designation 

Trade Names 

mg/kg Toxicity* Rating Rating** 

Chloroxuron Tenoran 3,700 4 5 

Chlorsulfuron Glean 5545 5 5 

CIPC Chloro-IPC 5,000 5 5 

Clethodim Select 1360 4 3-4 

Clomazone Command 1406 4 4-5 

Clopyralid Stinger 4300 4 4 

Cloransulam-methyl First Rate >5000 5 4-5 

CMA Super-Dal-E-Rad 400 3 -- 

Copper sulfate Various brands 300 3 -- 

Cyanazine Bladex 334 3 4 

Cyhalofop Clincher 1612 to 5000 5 4-5 

Flumioxazin Valor, Broadstar, Sureguard >5000 4 4 

Fluometuron Cotoran 8,900 5 5 

Fluridone Sonar >10,000 5 4-5 

Fluroxypyr Vista 3738 4 3-4 

Fomesafen Reflex 6570 5 4 

Fosamine Krenite 24,4000 6 4

150 



LD50 


Designation 

Trade Names 


Gasoline Various brands -- 3 -- 

Glufosinate Liberty, Finale 1910 4 4 

Glyphosate Roundup, others 5400 5 5 

Glyphosine Polaris 1950 4 5 

Halosulfuron-methyl Permit, Manage 8866 5 5 

Hexazinone Velpar 1690 4 5 

Imazamethabenz-methyl Assert 2679 4 5 

Imazapyr Arsenal, Chopper, Contain >5000 5 5 

Imazaquin Scepter, Image >5000 5 4-5 

Imazamox Beyond, Raptor >5000 5 5 

Imazethapyr Pursuit >5000 5 4 

Isopropalin Paarlan >5000 5 3-4 

Kerosene Various brands -- 2-3 -- 

KOCN Various brands 85 3 -- 

Lactofen Cobra 2533 4 4 

Linuron Lorox 1196 4 5 

MAMA Ansar, Methar 720 4 -- 

MCPA Various brands 700 4 4 

Mecoprop Mecoprop, Mecopex 650 4 -- 

Mesosulfuron-methyl Osprey >2000 4 4 

Metham Vapam 820 4 820 

Methyl bromide Various Brands 17 ppm air 2 1 

Metolachlor Dual 2534 4 3-4 

Metribuzin Sencor, Lexone 1200 4 5 

Metsulfuron Ally, Escort XP, Manor >5000 5 5 

MH (amine) MH-30 3900 4 5 

Molinate Ordram 584 4 4 

Monuron Telvar 3,600 4 5 

Monuron + TCA Urox 2,300 4 -- 

MSMA Weed-E-Rad, Ansar 700 4 -- 

Nicosulfuron Accent >5000 5 4 

Nitralin Planavin 5,000 5 5 

Nitrofen Tok E-25 2,630 4 -- 

Norea Herban 2,500 4 -- 

Norflurazon Zorial, Solicam >8000 5 4 

NPA Alanap (Na. salt) 1,770 4 5 

Oryzalin Surflan >500 4 4 

Oxadiazon Ronstar >5000 5 5 

Oxyfluorfen Goal >5000 5 2-3 

Paraquat Gramoxone Max 138 3 2 

PBA Benzac, Zobar 960 4 -- 

PCP (Na. salt) Weedbeads 210 3 1 

Pebulate Tillam 1,120 4 -- 

Pelargonic acid Scythe 5000 5 2-3 

Pendimethalin Prowl, Pendulum 2679 4 4 

Petroleum solvents Various brands - 4 1 

Picloram Tordon 8,200 5 --

151 



LD50 


Designation 

Trade Names 


PMA PMAS, Tat-C-Lect 40 2 2 

Primisulfuron Beacon >5000 5 4 

Prodiamine Barricade 15,380 6 5 

Prometone Parmitol 2276 4 -- 

Prometryne Caparol 3,750 4 -- 

Pronamide Kerb 5620 5 4 

Propachlor Ramrod 1,900 4 l,3 

Propanil Stam F-34, Rogue 1,384 4 3-4 

Propazine Milogard >5,000 4 -- 

Prosulfuron Peak, Exceed 986 4 -- 

Pyriclor Daxtron 80 3 5 

Pyridate Tough 4690 4 4 

Pyrithiobac-sodium Staple 4000 4 5 

Quinclorac Facet, Drive >2610 4 5 

Quizalofop Assure 1480 4 3-4 

Rimsulfuron Basis >5000 5 55 

Sethoxydim Poast, Vantage 2676 4 3-4 

Sesone Sesone 1,000 4 -- 

Siduron Tupersan 7,500 5 4 

Silvex Kuron, Weedone-TP 500 4 4 

Simazine Princep 5,000 4 5 

SMDC Vapam 820 4 3 

Sodium aresenite Atlas A, Triox 10 2 l,2 

Sodium Chlorate DeFol, Atlacide 12,000 5 4 

Solan Solan 10,000 5 -- 

Sulfentrazone Authority 2689 4 4 

Sulfometuron Oust XP >5000 5 4 

Sulfosate Touchdown 748 4 -- 

Sulfosulfuron Outrider, Maverick >5000 5 5 

TABLE SALT (For comparison) 3,320 4 5 

TCA Various brands 3,370 4 2 

Tebuthiuron Spike 400 3 4 

Terbacil Sinbar 5,000 5 5 

Terbutol Azak 34,600 6 -- 

Thiazopyr Mandate, Visor >5000 5 5 

Thifensulfuron Pinnacle >5000 5 5 

Thiobencarb Bolero 920 4 4 

Toxynil Centrol, Bentrol 305 3 -- 

Tri-allate Avadex BW 1,675 4 4 

Triclopyr Garlon 2140 4 4-5 

Tridiphane Tandem 1743 4 -- 

Trifloxysulfuron-sodium Envoke >5000 5 5 

Trifluralin Treflan 500 4 -- 

Vernolate Vernam 1,780 4 -- 

*Numerical toxicity rating is based on a modification of the classification of pesticides in the Federal Insecticide, Fungicide, 

and Rodenticide Act and from "Clinical Toxicology of Commercial Products" by Gleason, M. N., Gosselin, R. E., and Hodge. 

H. D. Williams and Wilkins Co., Baltimore, MD, 1957.

Toxicity Rating Class LD50* (mg/kg) 

152 


Probable Lethal Dose for 

a 150 lb. man 

1 Extremely toxic Less than 5 A taste (less than 7 drops) 

2 Very toxic 5 to 49 7 drops to 1 teaspoonful 

3 Moderately toxic 50 to 499 1 teaspoonful to 1 ounce 

4 Slightly toxic 500 to 4,999 1 ounce to 1 pint 

5 Almost nontoxic 5000 to 14,999 1 pint to 1 quart 

6 Nontoxic 15,000 and above More than 1 quart 

**Numerical rating is based on the following classification: 

1. Absorbed and poisonous 

2. Causes burn and blisters 

3. Moderately irritating 

4. Mildly irritating 

5. Nonirritating 

FOR INFORMATION ON TOXICOLOGY, ECOLOGICAL AND ENVIRONMENTAL EFFECTS OF 

PESTICIDES: NATIONAL PESTICIDE TELECOMMUNICATIONS NETWORK 

1-800-858-7378 (OPEN 7 DAYS A WEEK FROM 6:30 a.m.-4:30 p.m. PACIFIC TIME)

Visit our Web site: www.lsuagcenter.com 

Louisiana State University Agricultural Center 

William B. Richardson, Chancellor 

Louisiana Agricultural Experiment Station 

David J. Boethel, Vice Chancellor and Director 

Louisiana Cooperative Extension Service 

Paul D. Coreil, Vice Chancellor and Director 

Pub. 1565 1/07 Rev. 

Issued in furtherance of Cooperative Extension work, Acts of Congress of May 8 and 

June 30, 1914, in cooperation with the United States Department of Agriculture. The 

Louisiana Cooperative Extension Service provides equal opportunities in programs 

and employment.

Louisiana Suggested Chemical Weed Control Guide - AgFax

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