Herbicide label
Helena Atrazine 4F
Helena Atrazine 4F (EPA 100-497-5905) is a Group 5 atrazine herbicide labeled for 5 crops. The label lists 47 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 cited to 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 cited to the label, so you can check it against the source.
Helena Atrazine 4F label facts
- Product Helena Atrazine 4F
- EPA Reg. No. 100-497-5905
- Distributor Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient atrazine
- MOA group 5
Crops on the Helena Atrazine 4F label
Helena Atrazine 4F is labeled for these 5 crops and uses, per the EPA label.
- field corn
- sorghum
- sweet corn
- sugarcane
- fallow
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Helena Atrazine 4F label
The Helena Atrazine 4F label names 49 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 control47- alexandergrass
- amaranth
- barnyardgrass, common
- brome, downy
- buckwheat, wild
- carpetweed
- chickweed
- clover, bur
- clover, hop
- crabgrass
- crabgrass, large
- dock, seedling
- fireweed
- foxtail
- foxtail, giant
- foxtail, green
- foxtail, yellow
- groundcherry
- henbit
- jimsonweed
- junglerice
- kochia
- lambsquarters
- lambsquarters, common
- lettuce, wild
- morning glory, annual
- mustard
- mustards
- nightshade, black
- wild oats
- paintbrush, flora's
- panicum, fall
- pennycress, field
- pellitory
- pellitory weed
- pigweed
- purslane
- ragweed, giant
- smartweed
- speedwell, corn
- sunflower
- thistle, annual
- thistle, russian
- velvetleaf
- volunteer wheat
- wiregrass
- witchgrass
Partial control
partial9- barnyardgrass, common
- cocklebur, common
- crabgrass, large
- foxtail, giant
- foxtail, green
- foxtail, yellow
- sicklepod
- velvetleaf
- witchgrass
Suppression
suppression1- volunteer wheat
Controls with a tank-mix partner
needs partner3- cocklebur, common
- crabgrass
- 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.
Helena Atrazine 4F 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 cites the exact per-acre rate for your crop to 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, AZ, CA, CO, FL, 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 cites the exact plant-back for your rotational crop to the label line.
Helena Atrazine 4F FAQ
What weeds does Helena Atrazine 4F control?
The Helena Atrazine 4F label names 49 weeds, including alexandergrass, amaranth, common barnyardgrass, downy brome, wild buckwheat, and carpetweed. Control varies by crop, rate, and timing.
What crops is Helena Atrazine 4F labeled for?
Helena Atrazine 4F is labeled for 5 crops and uses, including field corn, sorghum, sweet corn, sugarcane, and fallow.
What is the active ingredient in Helena Atrazine 4F? Is it a generic?
Helena Atrazine 4F'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 Helena Atrazine 4F?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal cites the exact interval for your rotation to the label line, so you can verify it.
Build a program →Can I tank-mix Helena Atrazine 4F?
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 cites the condition on each, so you can verify it.
Build a program →Plan in minutes, not evenings.
Start with Helena Atrazine 4F and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and cited.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-10.