Herbicide label

Assure II

Assure II (EPA 352-541) is a Group 1 quizalofop-p-ethyl herbicide labeled for 16 crops. The label lists 36 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Assure II label facts

Product Assure II
EPA Reg. No. 352-541
Registrant Corteva Agriscience
Active ingredient quizalofop-p-ethyl
MOA group 1

Crops on the Assure II label

Assure II is labeled for these 16 crops and uses, per the EPA label.

soybean
cotton
sunflower
sugar beet
canola
alfalfa
chickpea
dry edible bean
fallow
field pea
flax
lentil
mint
rapeseed
radish
spinach

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Weeds on the Assure II label

The Assure II label names 42 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 control36

barley
barnyardgrass, common
bermudagrass
brome, downy
corn, volunteer
crabgrass
crabgrass, large
crabgrass, smooth
crowfootgrass
cupgrass, woolly
foxtail, bristly
foxtail, giant
foxtail, green
foxtail, yellow
goatgrass, jointed
goosegrass
rhizome johnsongrass
johnsongrass, seedling
junglerice
millet, wild-proso
muhly, wirestem
oats
wild oats
panicum, fall
panicum, texas
quackgrass
red rice
rye, volunteer
ryegrass, italian
sandbur, field
shattercane
signalgrass, broadleaf
sprangletop
volunteer wheat
windgrass, common
witchgrass

Partial control

partial6

crabgrass
grass, molasses
grass, sour
guineagrass
redtop, natal
torpedograss

Suppression

suppression1

quackgrass

Controls with a tank-mix partner

needs partner1

corn, volunteer glyphosate-resistant

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Assure II 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, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, FL, GA, ID, LA, MD, MS, MT, OR, TN, VA, WA, WV, and WY.

Get the interval for your rotation: build a program and FieldMarshal cites the exact plant-back for your rotational crop to the label line.

Assure II FAQ

What weeds does Assure II control?

The Assure II label names 42 weeds, including barley, common barnyardgrass, bermudagrass, downy brome, volunteer corn, and crabgrass. Control varies by crop, rate, and timing.

What crops is Assure II labeled for?

Assure II is labeled for 16 crops and uses, including soybeans, cotton, sunflower, sugar beet, and canola.

What is the active ingredient in Assure II? Is it a generic?

Assure II's active ingredient is quizalofop-p-ethyl (MOA Group 1). 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 Assure II?

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.

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Can I tank-mix Assure II?

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.