Herbicide label
Authority First DF Herbicide Label
Authority First DF (EPA 279-3246) is a Group 2 and 14 cloransulam-methyl and sulfentrazone herbicide labeled for 1 crops. The label lists 60 controlled weeds, plus partial-control, suppression, and partner-control categories.
Authority First DF label facts
- Product Authority First DF
- EPA Reg. No. 279-3246
- Registrant FMC Corporation
- Active ingredient cloransulam-methyl and sulfentrazone
- MOA group 2 and 14
Crops on the Authority First DF label
Authority First DF is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Authority First DF label
The Authority First DF label names 68 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 control60- amaranth, palmer
- amaranth, spiny
- anoda, spurred
- beggarweed, florida
- carpetweed
- cocklebur, common
- copperleaf, hophornbeam
- crabgrass, large
- crabgrass, smooth
- croton, tropic
- daisy, american
- dayflower, common
- galinsoga, hairy
- goosegrass
- groundcherry, clammy
- groundcherry, cutleaf
- horseweed
- jimsonweed
- kochia
- ladysthumb
- lambsquarters, common
- mallow, venice
- mexicanweed
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, purple
- morningglory, red
- morningglory, smallflower
- morningglory, tall
- mustard, wild
- nightshade, eastern black
- nightshade, hairy
- nightshade, silverleaf
- nutsedge, purple
- nutsedge, yellow
- orchardgrass
- panicum, texas
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- poorjoe
- purslane, common
- pusley, florida
- ragweed, common
- ragweed, giant
- sedge, annual
- senna, coffee
- sicklepod
- signalgrass, broadleaf
- smartweed, pennsylvania
- smellmelon
- spurge, spotted
- starbur, bristly
- sunflower, annual
- sida, prickly
- thistle, russian
- velvetleaf
- waterhemp, common
Partial control
partial8- barnyardgrass, common
- crabgrass, southern
- crowfootgrass
- foxtail, giant
- foxtail, green
- foxtail, yellow
- johnsongrass, seedling
- panicum, fall
Authority First DF 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.
Authority First DF FAQ
What weeds does Authority First DF control?
The Authority First DF label names 68 weeds, including palmer amaranth, spiny amaranth, spurred anoda, florida beggarweed, carpetweed, and common cocklebur. Control varies by crop, rate, and timing.
What crops is Authority First DF labeled for?
Authority First DF is labeled for 1 crops and uses, including soybeans.
What is the active ingredient in Authority First DF? Is it a generic?
Authority First DF's active ingredient is cloransulam-methyl and sulfentrazone (MOA Group 2 and 14). 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.