Herbicide label
Triangle Herbicide Label
Triangle (EPA 66222-131-55467) is a Group 5 and 15 atrazine and metolachlor herbicide labeled for 3 crops. The label lists 38 controlled weeds, plus partial-control, suppression, and partner-control categories.
Triangle label facts
- Product Triangle
- EPA Reg. No. 66222-131-55467
- Distributor Tenkoz Inc
- Active ingredient atrazine and metolachlor
- MOA group 5 and 15
Crops on the Triangle label
Triangle is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Triangle label
The Triangle label names 47 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 control38- alfalfa
- bromegrass species
- cereal rye
- kochia
- sida, prickly
- wheat, winter
- barnyardgrass, common
- carpetweed
- chickweed
- cocklebur, common
- crabgrass
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- foxtail, giant
- foxtail, green
- foxtail, millet
- foxtail, yellow
- galinsoga
- goosegrass
- henbit
- jimsonweed
- lambsquarters
- morningglory
- mustard
- nightshade, black
- panicum, browntop
- panicum, fall
- pigweed
- pusley, florida
- purslane, common
- ragweed, common
- ragweed, giant
- red rice
- smartweed
- velvetleaf
- waterhemp, common
- witchgrass
Partial control
partial7- cupgrass, woolly
- johnsongrass, seedling
- nutsedge, yellow
- sandbur
- shattercane
- sicklepod
- sorghum, volunteer
Suppression
suppression2- orchardgrass
- timothy
Controls with a tank-mix partner
needs partner3- johnsongrass, seedling
- sandbur
- nutsedge, yellow
Triangle 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.
Triangle FAQ
What weeds does Triangle control?
The Triangle label names 47 weeds, including alfalfa, bromegrass species, cereal rye, kochia, prickly sida, and winter wheat. Control varies by crop, rate, and timing.
What crops is Triangle labeled for?
Triangle is labeled for 3 crops and uses, including field corn, sorghum, and sweet corn.
What is the active ingredient in Triangle? Is it a generic?
Triangle'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.