Herbicide label
Atrazine 4L Herbicide Label
Atrazine 4L (EPA 33270-10) is a Group 5 atrazine herbicide labeled for 6 crops. The label lists 35 controlled weeds, plus partial-control, suppression, and partner-control categories.
Atrazine 4L label facts
- Product Atrazine 4L
- EPA Reg. No. 33270-10
- 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.
Weeds on the Atrazine 4L label
The Atrazine 4L label names 40 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 control35- alexandergrass
- amaranth, spiny
- fireweed
- junglerice
- paintbrush, flora's
- pellitory
- wiregrass
- barnyardgrass, common
- crabgrass, large
- foxtail, giant
- foxtail, green
- foxtail, yellow
- pigweed
- purslane
- sunflower
- brome, downy
- cocklebur, common
- groundcherry
- jimsonweed
- kochia
- lambsquarters, common
- lettuce, wild
- morning glory, annual
- mustards
- nightshade, black
- wild oats
- pennycress, field
- ragweed, giant
- thistle, russian
- volunteer wheat
- buckwheat, wild
- dock
- henbit
- smartweed
- thistle, annual
Partial control
partial3- sicklepod
- velvetleaf
- witchgrass
Controls with a tank-mix partner
needs partner2- carpetweed
- panicum, fall
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.
Atrazine 4L FAQ
What weeds does Atrazine 4L control?
The Atrazine 4L label names 40 weeds, including alexandergrass, spiny amaranth, fireweed, junglerice, flora's paintbrush, and pellitory. 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, sorghum-sudangrass, and sugarcane.
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.
Sources
Last updated 2026-09-30.