Herbicide label
GCS Atrazine 4L Herbicide Label
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.
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.
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
- crabgrass
- fireweed
- foxtail
- junglerice
- paintbrush, flora's
- pellitory
- sunflower
- wiregrass
- barnyardgrass, common
- crabgrass, large
- pigweed
- purslane
- brome, downy
- cocklebur, common
- groundcherry
- jimsonweed
- kochia
- lambsquarters, common
- lettuce, wild
- morning glory, annual
- mustard
- nightshade, black
- wild oats
- pennycress, field
- ragweed, giant
- sunflower, wild
- thistle, russian
- volunteer wheat
- buckwheat, wild
- dock, seedling
- henbit
- smartweed
- thistle, annual
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
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.
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 and the rotational crop.
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.
GCS Atrazine 4L FAQ
What weeds does GCS Atrazine 4L control?
The GCS Atrazine 4L label names 45 weeds, including alexandergrass, amaranth, spiny amaranth, crabgrass, fireweed, and foxtail. 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.
Sources
Last updated 2026-09-30.