Herbicide label
FirstAct Herbicide Label
FirstAct (EPA 66222-288) is a Group 1 quizalofop-p-ethyl herbicide labeled for 1 crops. The label lists 32 controlled weeds, plus partial-control, suppression, and partner-control categories.
“FirstAct™ is a systemic herbicide that is rapidly absorbed by treated foliage and translocated to the roots and other growing points of the plant.”
FirstAct label facts
- Product FirstAct
- EPA Reg. No. 66222-288
- Registrant Makhteshim Agan of North America, Inc. d/b/a ADAMA
- Active ingredient quizalofop-p-ethyl
- MOA group 1
Crops on the FirstAct label
FirstAct is labeled for these 1 crops and uses, per the EPA label.
Weeds on the FirstAct label
The FirstAct label names 32 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 control32- corn, volunteer
- foxtail, giant
- millet, wild-proso
- crowfootgrass
- panicum, fall
- sandbur, field
- foxtail, bristly
- foxtail, green
- foxtail, yellow
- goosegrass
- sprangletop
- barley
- oats
- rye, volunteer
- volunteer wheat
- wild oats
- witchgrass
- barnyardgrass, common
- crabgrass, large
- crabgrass, smooth
- junglerice
- panicum, texas
- red rice
- cupgrass, woolly
- signalgrass, broadleaf
- brome, downy
- ryegrass, italian
- goatgrass, jointed
- windgrass, common
- muhly, wirestem
- bermudagrass
- quackgrass
FirstAct 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.
FirstAct FAQ
What weeds does FirstAct control?
The FirstAct label names 32 weeds, including volunteer corn, giant foxtail, wild-proso millet, crowfootgrass, fall panicum, and field sandbur. Control varies by crop, rate, and timing.
What crops is FirstAct labeled for?
FirstAct is labeled for 1 crops and uses, including sorghum.
What is the active ingredient in FirstAct? Is it a generic?
FirstAct's active ingredient is quizalofop-p-ethyl (MOA Group 1). 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.