Herbicide label
Trizmet II Herbicide Label
Trizmet II (EPA 19713-547) is a Group 5 and 15 atrazine and metolachlor herbicide labeled for 6 crops. The label lists 36 controlled weeds, plus partial-control, suppression, and partner-control categories.
“TRIZMET II is a selective herbicide that can be applied before planting, before or after emergence (see directions) for control of most annual grasses and broadleaf weeds in Field Corn, Popcorn and Sweet Corn.”
Trizmet II label facts
- Product Trizmet II
- EPA Reg. No. 19713-547
- Registrant Drexel Chemical Company
- Active ingredient atrazine and metolachlor
- MOA group 5 and 15
Crops on the Trizmet II label
Trizmet II is labeled for these 6 crops and uses, per the EPA label.
Weeds on the Trizmet II label
The Trizmet II label names 50 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- barnyardgrass, common
- carpetweed
- chickweed
- cocklebur, common
- crabgrass
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- flixweed
- foxtail, giant
- foxtail, green
- foxtail, millet
- foxtail, yellow
- galinsoga
- goosegrass
- henbit
- jimsonweed
- kochia
- lambsquarters
- morningglory
- mustard
- nightshade, black
- panicum, browntop
- panicum, fall
- pigweed
- pusley, florida
- ragweed, common
- ragweed, giant
- red rice
- sida, prickly
- signalgrass
- smartweed
- velvetleaf
- waterhemp, common
- witchgrass
- nutsedge, yellow
Partial control
partial6- cupgrass, woolly
- johnsongrass, seedling
- sandbur
- shattercane
- sicklepod
- sorghum, volunteer
Suppression
suppression3- grass
- grass, perennial
- wheat, winter
Controls with a tank-mix partner
needs partner5- alfalfa
- bromegrass species
- orchardgrass
- cereal rye
- timothy
Trizmet II 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.
Trizmet II FAQ
What weeds does Trizmet II control?
The Trizmet II label names 50 weeds, including common barnyardgrass, carpetweed, chickweed, common cocklebur, crabgrass, and crowfootgrass. Control varies by crop, rate, and timing.
What crops is Trizmet II labeled for?
Trizmet II is labeled for 6 crops and uses, including field corn, sorghum, popcorn, sweet corn, and seed corn.
What is the active ingredient in Trizmet II? Is it a generic?
Trizmet II's active ingredient is atrazine and metolachlor (MOA Group 5 and 15). 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.