Herbicide label

Priority-S 8E

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.

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Official EPA label (PDF)

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.

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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
spiderwort, tropical
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)

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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 and your soil texture.

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Plant-back and rotation

Your interval depends on your application rate, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, AZ, CA, CO, FL, GA, IA, ID, IL, KS, LA, MN, MO, MS, NC, ND, NE, NM, OK, OR, SC, SD, TN, TX, VA, WA, and WI.

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.

What's the plant-back interval after Priority-S 8E?

It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.

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Can I tank-mix Priority-S 8E?

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 gives the condition on each, so you can verify it.