Herbicide label
Corvus Herbicide Label
Corvus (EPA 264-1066) is a Group 2 and 27 isoxaflutole and thiencarbazone-methyl herbicide labeled for 3 crops. The label lists 56 controlled weeds, plus partial-control, suppression, and partner-control categories.
Corvus label facts
- Product Corvus
- EPA Reg. No. 264-1066
- Registrant Bayer CropScience, LLC
- Active ingredient isoxaflutole and thiencarbazone-methyl
- MOA group 2 and 27
Crops on the Corvus label
Corvus is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Corvus label
The Corvus 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 control56- amaranth, palmer
- barnyardgrass, common
- buffalobur
- buttercup, small flower
- carpetweed
- chamomile spp
- chickweed, common
- copperleaf, hophornbeam
- crabgrass, large
- crabgrass, smooth
- dandelion
- deadnettle, purple
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, robust purple
- foxtail, robust white
- foxtail, yellow
- galinsoga
- goosegrass
- henbit
- jimsonweed
- johnsongrass, seedling
- kochia
- lambsquarters, common
- mallow, venice
- horseweed
- millet, browntop
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- oat, tame
- wild oats
- panicum, fall
- pennycress, field
- pepperweed, virginia
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- plantain, broadleaf
- puncturevine, common
- purslane, common
- radish, wild
- ragweed, common
- thistle, russian
- sesbania, hemp
- shepherd's-purse
- sida, prickly
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, Penn.
- spurge, toothed
- velvetleaf
- waterhemp, common
Partial control
partial20- bluegrass, annual
- burcucumber
- clover, purple
- clover, white
- cocklebur, common
- cupgrass, woolly
- black medic
- millet, wild-proso
- morning glory, annual
- nutsedge, yellow
- panicum, texas
- ragweed, giant
- sandbur, field
- shattercane
- sicklepod
- speedwell, corn
- sunflower, wild
- vetch, bird
- violet, field
- witchgrass
Controls with a tank-mix partner
needs partner14- bluegrass, annual
- burcucumber
- clover, purple
- clover, white
- cocklebur, common
- black medic
- morning glory, annual
- nutsedge, yellow
- ragweed, giant
- sicklepod
- speedwell, corn
- sunflower, wild
- vetch, bird
- violet, field
Corvus 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.
Corvus FAQ
What weeds does Corvus control?
The Corvus label names 76 weeds, including palmer amaranth, common barnyardgrass, buffalobur, small flower buttercup, carpetweed, and chamomile spp. Control varies by crop, rate, and timing.
What crops is Corvus labeled for?
Corvus is labeled for 3 crops and uses, including field corn, seed corn, and corn silage.
What is the active ingredient in Corvus? Is it a generic?
Corvus's active ingredient is isoxaflutole and thiencarbazone-methyl (MOA Group 2 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.