Herbicide label

GCS Atrazine 4L

GCS Atrazine 4L (EPA 94730-23) is a Group 5 atrazine herbicide labeled for 6 crops. The label lists 36 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

GCS Atrazine 4L label facts

Product GCS Atrazine 4L
EPA Reg. No. 94730-23
Registrant Generic Crop Science, LLC
Active ingredient atrazine
MOA group 5

Crops on the GCS Atrazine 4L label

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

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Weeds on the GCS Atrazine 4L label

The GCS Atrazine 4L label names 45 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, seedling
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

quackgrass

Controls with a tank-mix partner

needs partner2

carpetweed
panicum, fall

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GCS 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 AR, AZ, CA, CO, FL, GA, IL, KS, LA, MO, MS, MT, NC, ND, NE, NM, OK, SD, TX, and WY.

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GCS Atrazine 4L FAQ

What weeds does GCS Atrazine 4L control?

The GCS Atrazine 4L label names 45 weeds, including alexandergrass, amaranth, spiny amaranth, common barnyardgrass, downy brome, and wild buckwheat. Control varies by crop, rate, and timing.

What crops is GCS Atrazine 4L labeled for?

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

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

GCS 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 GCS 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 GCS 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.