Herbicide label
Trizar Herbicide Label
Trizar (EPA 19713-686) is a Group 5, 15, and 27 atrazine, mesotrione, and metolachlor herbicide labeled for 6 crops. The label lists 61 controlled weeds, plus partial-control, suppression, and partner-control categories.
Trizar label facts
- Product Trizar
- EPA Reg. No. 19713-686
- Registrant Drexel Chemical Company
- Active ingredient atrazine, mesotrione, and metolachlor
- MOA group 5, 15, and 27
Crops on the Trizar label
Trizar is labeled for these 6 crops and uses, per the EPA label.
Weeds on the Trizar label
The Trizar label names 72 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 control61- amaranth, palmer
- amaranth, powell
- barnyardgrass, common
- beggarweed, florida
- buckwheat, wild
- buffalobur
- carpetweed
- chickweed, common
- cocklebur, common
- crabgrass
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- deadnettle, purple
- devil's claw
- foxtail, giant
- foxtail, green
- foxtail, robust
- foxtail, yellow
- galinsoga
- goosegrass
- henbit
- horseweed
- jimsonweed
- kochia
- lambsquarters, common
- mallow, venice
- foxtail, millet
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- nutsedge, yellow
- panicum, browntop
- panicum, fall
- pigweed, redroot
- pigweed, smooth
- purslane, common
- pusley, florida
- radish, wild
- ragweed, common
- ragweed, giant
- red rice
- sesbania, hemp
- shepherd's-purse
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- signalgrass, narrowleaf
- smartweed, ladysthumb
- smartweed, pennsylvania
- sprangletop, red
- starbur, bristly
- sunflower, annual
- velvetleaf
- waterhemp, common
- witchgrass
- hemp
- horsenettle
- pokeweed, common
- potatoes, volunteer
- thistle, canada
Partial control
partial11- bedstraw, catchweed
- cupgrass, woolly
- johnsongrass, seedling
- millet, wild-proso
- morningglory, entireleaf
- morningglory, ivyleaf
- panicum, texas
- puncturevine
- sandbur, field
- shattercane
- dandelion
Trizar 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.
Trizar FAQ
What weeds does Trizar control?
The Trizar label names 72 weeds, including palmer amaranth, powell amaranth, common barnyardgrass, florida beggarweed, wild buckwheat, and buffalobur. Control varies by crop, rate, and timing.
What crops is Trizar labeled for?
Trizar is labeled for 6 crops and uses, including field corn, sorghum, corn silage, seed corn, and sweet corn.
What is the active ingredient in Trizar? Is it a generic?
Trizar's active ingredient is atrazine, mesotrione, and metolachlor (MOA Group 5, 15, and 27). 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.