2018-2019 Horticultural Catalog

About Pre- and Post-Emergent Herbicides
Nutsedge
Dallisgrass
Dayflower
Wild Onion
Herbicides are chosen for their action on target weeds. Those
compounds that kill weeds after they have become plants are
called post-emergent herbicides. Another group of herbicides
works in the soil to prevent the emergent of plants from seeds.
Upon germination, the would-be seedlings absorb the herbicide
in the soil and die. These compounds are pre-emergent
herbicides. Soils treated with these compounds are left
undisturbed so as not to break the herbicide barrier they form.
Post-emergent herbicides are either selective or non-selective.
A broadleaf herbicide is selective for broadleaf weeds in turf.
A non-selective herbicide kills all the plants to which it is
applied. Post-emergent herbicides kill either on contact or
systemically. Pre-emergent herbicides are selective in that
they are tolerated by the crop but control the weeds that are a
problem in the crop. It is important to choose a herbicide that
is active against the weeds that will be encountered.
Lambsquarter
Velvet Leaf
Henbit Foxtail Goosegrass Purslane
Dandelion Annual Bluegrass Crabgrass Spurge
Biathlon
Oxyflourfen & Prodiamine
GROUP 14+3
Description: Pre-emergent granular
herbicide containing two selective
herbicides that provide a broad-spectrum
of weed control
Mode of action: Inhibiting cell division and
disruption cell wall formation in shoots
and roots of emerging seedling weeds
Labeled for: Ornamentals, nurseries, ground
maintenance
Weeds: Annual bluegrass, yellow foxtail,
common chickweed, dandelion, fireweed,
pepperweed, spurge, etc
Crops: Ornamentals, conifers
Benefits: Provides control of a wide range
of problem grass and broadleaf weeds by
creating a barrier in the soil and is active
for several months
Precautions: Not regulated for use on
vegetable or edible fruit bearing crops,
turf, bedding plants or flowering crops
Signal word: Warning; EPA No: 59807-12
Rate: 100 lbs per acre
REI: 24 hours
Pre-Emergent Herbicides
Price per Each
Size Catalog # 1-9 10-39 40 & up
50 lb 04-03440 $ 147.00 $ 136.66 $ 128.36
Smartweed
Chickweed
Casoron 4G
Dichlobenil
GROUP L – Nitrile
Description: Granular selective
pre-emergent granular herbicide
Mode of action: Shoot and root
inhibitor; cell wall synthesis inhibition
Labeled for: Ornamentals, nurseries,
orchards, construction and
plantations
Weeds: 100+ annual, perennial and
biennial grass and broadleaves:
spurge, nutsedge, annual bluegrass,
chickweed, henbit, plantain, ragweed,
purslane, etc
Crops: Fruit and nut trees, cranberries,
grapes, berries, woody ornamentals,
hybrid cottonwood and poplar
Benefits: Can be used under asphalt and vinyl pool liners
Precautions: Do not use in greenhouses, seedbeds, transplant or cutting
beds; do not graze treated areas; use lower rates if irrigated
Signal word: Caution; EPA No: 400-168
Rate: 50-100 lbs per acre; soil treatment window: Nov 15 - Feb 15;
incorporate 4-6 inches
for nutsedge control
REI: 12 hours
Price per Each
Size Catalog # 1-9 10 & up
25 lb 04-03450 $ 106.00 $ 98.50
about pre- and post-emergent herbicides • pre-emergent herbicides
800-325-3055
www.hummert.com
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