Herbicide label

Clean Slate

Clean Slate (EPA 228-491) is a Group 4 clopyralid herbicide labeled for 14 crops. The label lists 53 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Clean Slate label facts

Product Clean Slate
EPA Reg. No. 228-491
Registrant Nufarm Americas, Inc.
Active ingredient clopyralid
MOA group 4

Crops on the Clean Slate label

Clean Slate is labeled for these 14 crops and uses, per the EPA label.

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Weeds on the Clean Slate label

The Clean Slate label names 58 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 control53

alfalfa
jerusalem artichoke
beans, volunteer
buckwheat, wild
burdock
chamomile, false
mayweed, chamomile
clover, black medic
clover, hop
clover, red
sweetclover
clover, white
cocklebur, common
coffeeweed
cornflower
daisy, oxeye
dandelion
dock, curly
galinsoga
groundsel, common
hawksbeard, narrowleaf
hawkweed, orange
hawkweed, yellow
horseweed
jimsonweed
knapweed, diffuse
knapweed, spotted
lentils, volunteer
prickly lettuce
locoweed, lambert
locoweed, white
marshelder
nightshade, black
nightshade, cutleaf
nightshade, eastern black
nightshade, hairy
peas, volunteer
pineapple-weed
ragweed, common
ragweed, giant
salsify, meadow
sicklepod
sorrel, red
sowthistle, annual
volunteer soybean
starthistle, yellow
sunflower
teasel, common
thistle, bull
thistle, canada
thistle, musk
vetch
wormwood, biennial

Suppression

suppression5

buffalobur
knapweed, russian
ladysthumb
smartweed, green
sowthistle, perennial

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Clean Slate 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, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, AZ, CA, FL, GA, IA, LA, MS, NC, NM, NY, OK, SC, TN, TX, and VA.

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.

Clean Slate FAQ

What weeds does Clean Slate control?

The Clean Slate label names 58 weeds, including alfalfa, jerusalem artichoke, volunteer beans, wild buckwheat, burdock, and false chamomile. Control varies by crop, rate, and timing.

What crops is Clean Slate labeled for?

Clean Slate is labeled for 14 crops and uses, including field corn, wheat, sugar beet, canola, and barley.

What is the active ingredient in Clean Slate? Is it a generic?

Clean Slate's active ingredient is clopyralid (MOA Group 4). 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 Clean Slate?

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 Clean Slate?

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.