Herbicide label
Priority-S 8E Herbicide Label
Priority-S 8E (EPA 83100-86) is a Group 15 metolachlor herbicide labeled for 17 crops. The label lists 42 controlled weeds, plus partial-control, suppression, and partner-control categories.
Priority-S 8E label facts
- Product Priority-S 8E
- EPA Reg. No. 83100-86
- Registrant Albaugh, LLC
- Active ingredient metolachlor
- MOA group 15
Crops on the Priority-S 8E label
Priority-S 8E is labeled for these 17 crops and uses, per the EPA label.
Weeds on the Priority-S 8E label
The Priority-S 8E 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 control42- amaranth, palmer
- amaranth, powell
- barnyardgrass, common
- bentgrass (volunteer seedling)
- bluegrass, annual
- bluegrass, doughstalk
- bluegrass, kentucky (volunteer seedling)
- brome, california
- brome, downy
- carpetweed
- crabgrass, large
- crabgrass, smooth
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- fescue, fine (volunteer seedling)
- rattail fescue
- fescue, tall (volunteer seedling)
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, millet
- foxtail, yellow
- galinsoga, hairy
- galinsoga, smallflower
- goosegrass
- nightshade, eastern black
- nutsedge, yellow
- orchardgrass (volunteer seedling)
- panicum, fall
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- pusley, florida
- red rice
- ryegrass, italian
- ryegrass, perennial (volunteer seedling)
- signalgrass, broadleaf
- dayflower, benghal
- waterhemp, common
- witchgrass
Partial control
partial12- beggarweed, florida
- cupgrass, woolly
- eclipta
- johnsongrass
- millet, wild-proso
- nightshade, hairy
- panicum, texas
- purslane, common
- sandbur, field
- sandbur, Southern
- shattercane
- sorghum (volunteer)
Priority-S 8E 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.
Priority-S 8E FAQ
What weeds does Priority-S 8E control?
The Priority-S 8E label names 54 weeds, including palmer amaranth, powell amaranth, common barnyardgrass, bentgrass (volunteer seedling), annual bluegrass, and doughstalk bluegrass. Control varies by crop, rate, and timing.
What crops is Priority-S 8E labeled for?
Priority-S 8E is labeled for 17 crops and uses, including field corn, soybeans, cotton, sunflower, and potato.
What is the active ingredient in Priority-S 8E? Is it a generic?
Priority-S 8E's active ingredient is metolachlor (MOA Group 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.