Introduction

283
Weeds and Staging:
• Post-Emergence:
º Apply when annual broadleaf weeds are in the 2 to 4 leaf stage and when green foxtail is in the 1 to 3 leaf stage.
º In shelterbelts, apply when weeds are less than 4 inches (10 cm) tall.
• When tank mixed with MCPA amine in cereals, the following weeds are controlled:
º Buckwheat
(tartary, wild)
º Chickweed
º Corn spurry
º Cow cockle
º Flixweed
º Green foxtail
(suppression
possible)
º Green smartweed
º Hemp-nettle
º Lady’s-thumb
º Lamb’s-quarters
º Ragweed (common,
giant)
º Redroot pigweed
º Shepherd’s-purse
º Stinkweed
º Stork’s-bill
• Pre-emergent surface treatments and Post-emergent applications in corn and shelterbelts:
º Sufficient moisture (1 to 2 inches or 3 to 5 cm) in the form of rainfall or irrigation is necessary within 7 to 10 days of
a pre-emergence application or poor weed control will result.
º Barnyard grass*
º Common
chickweed
º Common
groundsel †
º Corn spurry †
º Dandelion
(seedlings only) †
º Foxtail (green,
yellow)*
* Suppression
†
Not registered with Lorox L.
° Not registered with Linuron 400.
º Goosefoot
º Knotweed
º Kochia †
º Lamb’s-quarters
º Pigweed
(prostrate † ,
redroot)
º Plantain
(seedlings only) †
º Purslane
º Ragweed
(common)
º Shepherd’s-purse
º Smartweed
(annual)
º Sow-thistle
(annual,
perennial †
seedlings only)
º Stinkweed o
º Wild buckwheat
º Wild radish †
º Witch grass
º Wormseed
mustard
Weed Control
Application Information:
• Water Volume:
º Cereals, coriander & caraway: 40 L per acre.
º Field Corn directed spray: 69 to 138 L per acre.
º Dill: 89 to 178 L per acre
º Pre-emergent surface: 81 to 162 L per acre.
º Shelterbelts: 90 to 180 L per acre.
• Nozzles and Pressure: 30 to 40 psi (200 to 275 kPa) when using conventional stainless steel flat fan nozzles. Low drift
nozzles may require higher pressures for proper performance. Use a combination of nozzles and pressure designed to
deliver thorough, even coverage and a minimum of fine droplets that are prone to drift.
• Screens: Use a 50 mesh or coarser line strainers and screens.
How it Works:
Refer to Table 9 on page 48.
Effects of Growing Conditions:
In post-emergent applications the best weed control occurs when temperatures are moderate, when relative humidity is
high and when soil moisture is adequate. Injury to cereals (crop lightening) will occur when the crop is under stress because
of drought or disease. This injury is worse when the product is applied at advanced leaf stages. In pre-emergent surface
treatments, rainfall or irrigation (1 to 2 inches or 3 to 5 cm) is required to move linuron into the root zone of germinating
seeds.
Insufficient moisture will result in poor weed control. Drought conditions after application will result in little to no weed
control. If rainfall does not occur within 7 to 10 days of application and prior to crop emergence, a shallow rotary hoeing
(0.75 to 1.5 inches/ 2 to 4 cm) should be made to mix the top layer of soil to help activation. Avoid covering treated ground
with un-treated soil. If unusually heavy rain follows application, severe crop injury may result from herbicide in the root
zone of the crop. DO NOT use on sandy soils or severe crop injury will result.