Herbicide label
Kyro Herbicide Label
Kyro (EPA 62719-766) is a Group 4, 15, and 27 acetochlor, clopyralid, and topramezone herbicide labeled for 4 crops. The label lists 54 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Kyro herbicide is a postemergence herbicide used to control annual grass and broadleaf weeds in corn (field corn, field seed corn, field silage corn and popcorn) after crop and weed emergence up to 24 inch tall corn.”
Kyro label facts
- Product Kyro
- EPA Reg. No. 62719-766
- Registrant Corteva Agriscience
- Active ingredient acetochlor, clopyralid, and topramezone
- MOA group 4, 15, and 27
Crops on the Kyro label
Kyro is labeled for these 4 crops and uses, per the EPA label.
Weeds on the Kyro label
The Kyro label names 76 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 control54- alfalfa
- amaranth, palmer
- amaranth, powell
- barnyardgrass, common
- bean, volunteer
- beggarweed, florida
- burcucumber
- volunteer canola
- carpetweed
- chickweed, common
- clover species
- cocklebur, common
- crabgrass, large
- crabgrass, smooth
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- cupgrass, woolly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- galinsoga, hairy
- goosegrass
- henbit
- jimsonweed
- johnsongrass, seedling
- lambsquarters, common
- lentil, volunteer
- prickly lettuce
- millet, wild-proso
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- panicum, browntop
- panicum, fall
- pea, volunteer
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- purslane, common
- pusley, florida
- ragweed, common
- ragweed, giant
- shepherd's-purse
- volunteer soybean
- sunflower, annual
- sunflower
- thistle, canada
- thistle, russian
- velvetleaf
- waterhemp, common
- witchgrass
Partial control
partial14- bindweed, field
- dandelion, common
- dock, curly
- kochia
- foxtail, millet
- wild oats
- panicum, texas
- red rice
- sandbur, field
- shattercane
- sida, prickly
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, pennsylvania
Controls with a tank-mix partner
needs partner8- buckwheat, wild
- devil's-claw
- horseweed
- mallow, common
- mallow, venice
- morningglory
- buffalobur
- sicklepod
Kyro 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.
Kyro FAQ
What weeds does Kyro control?
The Kyro label names 76 weeds, including alfalfa, palmer amaranth, powell amaranth, common barnyardgrass, volunteer bean, and florida beggarweed. Control varies by crop, rate, and timing.
What crops is Kyro labeled for?
Kyro is labeled for 4 crops and uses, including field corn, seed corn, corn silage, and popcorn.
What is the active ingredient in Kyro? Is it a generic?
Kyro's active ingredient is acetochlor, clopyralid, and topramezone (MOA Group 4, 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.