Herbicide label
Omni Brand Atrazine 4L
Omni Brand Atrazine 4L (EPA 5905-660) is a Group 5 atrazine herbicide labeled for 5 crops. The label lists 36 controlled weeds, plus partial-control, suppression, and partner-control categories.
Build the herbicide program for your field
Tell FieldMarshal your crop, weeds, and rotation. Get back a complete program, products, rates, plant-back, and tank-mix, with every line checked against the label so you can verify it yourself.
Built from 1,700+ EPA herbicide labels and 49 state weed-control guides. Made for crop advisors and growers.
Free to create your account. Every line references the label, so you can check it against the source.
Omni Brand Atrazine 4L label facts
- Product Omni Brand Atrazine 4L
- EPA Reg. No. 5905-660
- Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient atrazine
- MOA group 5
Crops on the Omni Brand Atrazine 4L label
Omni Brand Atrazine 4L is labeled for these 5 crops and uses, per the EPA label.
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Omni Brand Atrazine 4L label
The Omni Brand Atrazine 4L label names 44 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control36- alexandergrass
- amaranth
- amaranth, spiny
- barnyardgrass, common
- brome, downy
- buckwheat, wild
- cocklebur, common
- crabgrass
- crabgrass, large
- dock
- fireweed
- foxtail
- groundcherry
- henbit
- jimsonweed
- junglerice
- kochia
- lambsquarters, common
- lettuce, wild
- morning glory, annual
- mustard
- nightshade, black
- wild oats
- paintbrush, flora's
- pellitory
- pennycress, field
- pigweed
- purslane
- ragweed, giant
- smartweed
- sunflower
- sunflower, wild
- thistle, annual
- thistle, russian
- volunteer wheat
- wiregrass
Partial control
partial6- foxtail, giant
- foxtail, green
- foxtail, yellow
- sicklepod
- velvetleaf
- witchgrass
Suppression
suppression1- volunteer wheat
Controls with a tank-mix partner
needs partner2- carpetweed
- panicum, fall
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Omni Brand Atrazine 4L rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop and your soil texture.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
Plant-back and rotation
Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AR, CO, GA, IA, IL, IN, KS, KY, LA, MN, MO, MS, MT, NC, ND, NE, NM, OK, SD, TX, WI, and WY.
Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.
Omni Brand Atrazine 4L FAQ
What weeds does Omni Brand Atrazine 4L control?
The Omni Brand Atrazine 4L label names 44 weeds, including alexandergrass, amaranth, spiny amaranth, common barnyardgrass, downy brome, and wild buckwheat. Control varies by crop, rate, and timing.
What crops is Omni Brand Atrazine 4L labeled for?
Omni Brand Atrazine 4L is labeled for 5 crops and uses, including field corn, sorghum, sweet corn, sugarcane, and fallow.
What is the active ingredient in Omni Brand Atrazine 4L? Is it a generic?
Omni Brand Atrazine 4L's active ingredient is atrazine (MOA Group 5). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
What's the plant-back interval after Omni Brand Atrazine 4L?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix Omni Brand Atrazine 4L?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with Omni Brand Atrazine 4L and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.