Herbicide label
Steadfast Q Herbicide Label
Steadfast Q (EPA 352-774) is a Group 2 nicosulfuron and rimsulfuron herbicide labeled for 1 crops. The label lists 32 controlled weeds, plus partial-control, suppression, and partner-control categories.
Steadfast Q label facts
- Product Steadfast Q
- EPA Reg. No. 352-774
- Registrant Corteva Agriscience
- Active ingredient nicosulfuron and rimsulfuron
- MOA group 2
Crops on the Steadfast Q label
Steadfast Q is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Steadfast Q label
The Steadfast Q label names 55 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 control32- barnyardgrass, common
- canarygrass
- cereals, volunteer
- crabgrass, large
- cupgrass, woolly
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- johnsongrass, seedling
- rhizome johnsongrass
- millet, wild-proso
- muhly, wirestem
- panicum, fall
- panicum, texas
- quackgrass
- ryegrass, italian
- sandbur, field
- shattercane
- signalgrass, broadleaf
- wild oats
- witchgrass
- amaranth, powell
- burcucumber
- dandelion
- jimsonweed
- morning glory, annual
- mustard, wild
- pigweed, redroot
- pigweed, smooth
- sunflower, annual
Suppression
suppression9- cocklebur, common
- ladysthumb
- lambsquarters, common
- dogbane, hemp
- nutsedge, yellow
- smartweed, pennsylvania
- thistle, canada
- velvetleaf
- waterhemp, common
Controls with a tank-mix partner
needs partner14- nightshade, eastern black
- ragweed, common
- kochia
- ragweed, giant
- nightshade, black
- amaranth, palmer
- mallow, venice
- sicklepod
- sida, prickly
- radish, wild
- eveningprimrose, cutleaf
- pusley, florida
- morningglory, ivyleaf
- crabgrass, smooth
Steadfast Q 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.
Steadfast Q FAQ
What weeds does Steadfast Q control?
The Steadfast Q label names 55 weeds, including common barnyardgrass, canarygrass, volunteer cereals, large crabgrass, woolly cupgrass, and bristly foxtail. Control varies by crop, rate, and timing.
What crops is Steadfast Q labeled for?
Steadfast Q is labeled for 1 crops and uses, including field corn.
What is the active ingredient in Steadfast Q? Is it a generic?
Steadfast Q's active ingredient is nicosulfuron and rimsulfuron (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 2026-09-30.