Herbicide label
Authority Edge Herbicide Label
Authority Edge (EPA 279-9643) is a Group 14 and 15 pyroxasulfone and sulfentrazone herbicide labeled for 4 crops. The label lists 55 controlled weeds, plus partial-control, suppression, and partner-control categories.
Authority Edge label facts
- Product Authority Edge
- EPA Reg. No. 279-9643
- Registrant FMC Corporation
- Active ingredient pyroxasulfone and sulfentrazone
- MOA group 14 and 15
Crops on the Authority Edge label
Authority Edge is labeled for these 4 crops and uses, per the EPA label.
Weeds on the Authority Edge label
The Authority Edge label names 75 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 control55- amaranth, palmer
- amaranth, powell
- amaranth, spiny
- amaranth, spleen
- barnyardgrass, common
- bluegrass, annual
- canarygrass
- carpetweed
- copperleaf, hophornbeam
- crabgrass
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, robust
- foxtail, yellow
- galinsoga, hairy
- goosegrass
- groundcherry, cutleaf
- jimsonweed
- johnsongrass, seedling
- kochia
- lambsquarters, common
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, purple
- morningglory, red
- morningglory, scarlet
- morningglory, smallflower
- morningglory, tall
- nightshade, black
- nightshade, eastern black
- panicum, fall
- panicum, texas
- pigweed, redroot
- pigweed, smooth
- pigweed, spiny
- pigweed, tumble
- purslane, common
- pusley, florida
- red rice
- ryegrass, italian
- ryegrass, rigid
- sida, prickly
- signalgrass, broadleaf
- smartweed, pennsylvania
- dayflower, benghal
- star of bethlehem
- thistle, russian
- waterhemp, common
- witchgrass
Partial control
partial17- brome, downy
- brome, japanese
- buckwheat, wild
- cheat
- chickweed, common
- cupgrass, woolly
- fleabane, common
- groundsel, common
- henbit
- horseweed
- millet, wild-proso
- wild oats
- orach, spreading
- ragweed, common
- sandbur, longspine
- shattercane
- velvetleaf
Suppression
suppression3- nutsedge, purple
- nutsedge, yellow
- sedge, annual
Authority Edge 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 Edge FAQ
What weeds does Authority Edge control?
The Authority Edge label names 75 weeds, including palmer amaranth, powell amaranth, spiny amaranth, spleen amaranth, common barnyardgrass, and annual bluegrass. Control varies by crop, rate, and timing.
What crops is Authority Edge labeled for?
Authority Edge is labeled for 4 crops and uses, including soybeans, sunflower, field pea, and chickpea.
What is the active ingredient in Authority Edge? Is it a generic?
Authority Edge's active ingredient is pyroxasulfone and sulfentrazone (MOA Group 14 and 15). 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.