Herbicide label

Smash

Smash (EPA 83529-338) is a Group 27 topramezone herbicide labeled for 7 crops. The label lists 39 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“Smash is absorbed by leaves, roots, and shoots and translocated to the growing points of sensitive weeds to control emerged weeds. Smash controls weeds by inhibiting carotenoid biosynthesis (HPPD-inhibitor Group 27).”

— Smash EPA label, Reg. No. 83529-338

Smash label facts

Product Smash
EPA Reg. No. 83529-338
Registrant Sharda USA LLC
Active ingredient topramezone
MOA group 27

Crops on the Smash label

Smash is labeled for these 7 crops and uses, per the EPA label.

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Weeds on the Smash label

The Smash label names 51 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 control39

amaranth, palmer
amaranth, powell
barnyardgrass, common
burcucumber
volunteer canola
carpetweed
chickweed, common
cocklebur, common
crabgrass, large
crabgrass, smooth
foxtail, giant
goosegrass
horseweed
jimsonweed
kochia
lambsquarters, common
prickly lettuce
mallow, common
millet, wild-proso
mustard
nightshade, black
nightshade, eastern black
nightshade, hairy
pigweed, prostrate
pigweed, redroot
pigweed, smooth
pigweed, tumble
pusley, florida
ragweed, common
ragweed, giant
shepherd's-purse
sida, prickly
smartweed, ladysthumb
smartweed, pennsylvania
sunflower, volunteer
sunflower, wild
thistle, russian
velvetleaf
waterhemp, common

Partial control

partial4

dandelion
mallow, venice
morningglory
thistle, canada

Suppression

suppression8

bermudagrass, common
cupgrass, woolly
panicum, fall
foxtail, green
foxtail, yellow
johnsongrass, seedling
shattercane
signalgrass, broadleaf

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Smash 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.

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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.

Smash FAQ

What weeds does Smash control?

The Smash label names 51 weeds, including palmer amaranth, powell amaranth, common barnyardgrass, burcucumber, volunteer canola, and carpetweed. Control varies by crop, rate, and timing.

What crops is Smash labeled for?

Smash is labeled for 7 crops and uses, including field corn, corn silage, seed corn, popcorn, and sweet corn.

What is the active ingredient in Smash? Is it a generic?

Smash's active ingredient is topramezone (MOA Group 27). 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 Smash?

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 Smash?

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.