Herbicide label
DuPont GR1 Herbicide Label
DuPont GR1 (EPA 352-884) is a Group 2 pyroxsulam herbicide labeled for 2 crops. The label lists 43 controlled weeds, plus partial-control, suppression, and partner-control categories.
DuPont GR1 label facts
- Product DuPont GR1
- EPA Reg. No. 352-884
- Registrant Corteva Agriscience
- Active ingredient pyroxsulam
- MOA group 2
Crops on the DuPont GR1 label
DuPont GR1 is labeled for these 2 crops and uses, per the EPA label.
Weeds on the DuPont GR1 label
The DuPont GR1 label names 54 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 control43- barnyardgrass, common
- blackgrass
- bluegrass, bulbous
- brome, downy
- brome, japanese
- brome, ripgut
- cheat
- chess, hairy
- corn, volunteer
- foxtail, yellow
- wild oats
- ryegrass, italian
- windgrass, common
- bedstraw, catchweed (cleavers)
- bittercress, hairy
- burclover, spotted
- buttercup, smallflower
- canola, volunteer (wild turnip)
- chickweed, common
- chickweed, mouseear
- clover, white
- falseflax, smallseed
- fiddleneck
- flixweed
- carolina geranium
- gromwell, corn
- hempnettle, common
- henbit
- lambsquarters, common
- mustard, black
- mustard, blue
- mustard, tumble
- mustard, wild
- mustard, wormseed
- pennycress, field
- pepperweed, virginia
- pigweed, redroot
- shepherd's-purse
- smartweed, annual
- tansymustard, pinnate
- thistle, russian
- vetch, hairy
- wallflower, bushy
Suppression
suppression9- foxtail barley
- canarygrass, hood
- canarygrass, littleseed
- foxtail, green
- quackgrass
- rescuegrass
- buckwheat, wild
- coreopsis, plains
- evening-primrose, cutleaf
Controls with a tank-mix partner
needs partner2- lambsquarters, common over 2 inches tall
- thistle, Russian over 2 inches tall
DuPont GR1 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.
DuPont GR1 FAQ
What weeds does DuPont GR1 control?
The DuPont GR1 label names 54 weeds, including common barnyardgrass, blackgrass, bulbous bluegrass, downy brome, japanese brome, and ripgut brome. Control varies by crop, rate, and timing.
What crops is DuPont GR1 labeled for?
DuPont GR1 is labeled for 2 crops and uses, including winter wheat and triticale.
What is the active ingredient in DuPont GR1? Is it a generic?
DuPont GR1's active ingredient is pyroxsulam (MOA Group 2). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-17.