Herbicide label
Steadfast Q
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.
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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.
- field corn
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Steadfast Q label
The Steadfast Q label names 53 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- amaranth, powell
- barnyardgrass, common
- burcucumber
- canarygrass
- cereals, volunteer
- crabgrass, large
- cupgrass, woolly
- dandelion
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- jimsonweed
- rhizome johnsongrass
- johnsongrass, seedling
- millet, wild-proso
- morning glory, annual
- muhly, wirestem
- mustard, wild
- wild oats
- panicum, fall
- panicum, texas
- pigweed, redroot
- pigweed, smooth
- quackgrass
- ryegrass, italian
- sandbur, field
- shattercane
- signalgrass, broadleaf
- sunflower, annual
- witchgrass
Suppression
suppression9- cocklebur, common
- dogbane, hemp
- ladysthumb
- lambsquarters, common
- nutsedge, yellow
- smartweed, pennsylvania
- thistle, canada
- velvetleaf
- waterhemp, common
Controls with a tank-mix partner
needs partner17- eveningprimrose, cutleaf
- pusley, florida
- radish, wild
- sicklepod
- sida, prickly
- cocklebur, common
- kochia
- lambsquarters, common
- nightshade, black
- nightshade, eastern black
- amaranth, palmer
- pigweed, redroot
- ragweed, common
- ragweed, giant
- smartweed, ladysthumb
- smartweed, pennsylvania
- waterhemp, common
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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 cites the exact per-acre rate for your crop to 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 cites the exact plant-back for your rotational crop to the label line.
Steadfast Q FAQ
What weeds does Steadfast Q control?
The Steadfast Q label names 53 weeds, including powell amaranth, common barnyardgrass, burcucumber, canarygrass, volunteer cereals, and large crabgrass. 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.
What's the plant-back interval after Steadfast Q?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal cites the exact interval for your rotation to the label line, so you can verify it.
Build a program →Can I tank-mix Steadfast Q?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and cites the condition on each, so you can verify it.
Build a program →Plan in minutes, not evenings.
Start with Steadfast Q and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and cited.
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Sources
Last updated 2026-07-10.