Herbicide label

Atrazine 4L

Atrazine 4L (EPA 5905-470) is a Group 5 atrazine herbicide labeled for 6 crops. The label lists 23 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Atrazine 4L label facts

Product Atrazine 4L
EPA Reg. No. 5905-470
Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
Active ingredient atrazine
MOA group 5

Crops on the Atrazine 4L label

Atrazine 4L is labeled for these 6 crops and uses, per the EPA label.

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Weeds on the Atrazine 4L label

The Atrazine 4L label names 35 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 control23

nightshade, black
groundcherry
pigweed
jimsonweed
purslane
kochia
ragweed, giant
wild oats
lambsquarters, common
morning glory, annual
velvetleaf
mustard
cocklebur, common
smartweed
buckwheat, wild
brome, downy
cheat
thistle, russian
prickly lettuce
sunflower, wild
volunteer wheat
pennycress, field
henbit

Partial control

partial8

foxtail, giant
crabgrass, large
sicklepod
barnyardgrass, common
foxtail, green
witchgrass
foxtail, yellow
buttonweed

Suppression

suppression1

quackgrass

Controls with a tank-mix partner

needs partner3

crabgrass
panicum, fall
carpetweed

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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.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AZ, CA, CO, FL, KS, LA, MT, ND, NE, NM, OK, OR, SD, TX, 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.

Atrazine 4L FAQ

What weeds does Atrazine 4L control?

The Atrazine 4L label names 35 weeds, including black nightshade, groundcherry, pigweed, jimsonweed, purslane, and kochia. Control varies by crop, rate, and timing.

What crops is Atrazine 4L labeled for?

Atrazine 4L is labeled for 6 crops and uses, including field corn, sorghum, sweet corn, sugarcane, and fallow.

What is the active ingredient in Atrazine 4L? Is it a generic?

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 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.

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Can I tank-mix 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.