Herbicide label

Harmony GT XP

Harmony GT XP (EPA 279-9577) is a Group 2 thifensulfuron herbicide labeled for 13 crops. The label lists 54 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Harmony GT XP label facts

Product Harmony GT XP
EPA Reg. No. 279-9577
Registrant FMC Corporation
Active ingredient thifensulfuron
MOA group 2

Crops on the Harmony GT XP label

Harmony GT XP is labeled for these 13 crops and uses, per the EPA label.

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Weeds on the Harmony GT XP label

The Harmony GT XP label names 64 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 control54

buckwheat, common
buckwheat, wild
buttercup, smallflower
canola, volunteer Roundup Ready
chamomile, corn
chamomile, false
chamomile, scentless
chamomile, wild
chickweed, common
chickweed, mouseear
dock, curly
fiddleneck
fiddleneck, tarweed
flixweed
garlic, wild
carolina geranium
groundsel, common
knawel, annual
kochia
knotweed, prostrate
ladysthumb
lambsquarters
lambsquarters, common
lentil, volunteer
miner's lettuce
mallow, little
marshelder
mayweed
mayweed, stinking
mustard, black
mustard, tumble
mustard, wild
nightshade, black
nightshade, eastern black
nightshade, hairy
pea, volunteer
pennycress, field
pigweed
pigweed, other species
pigweed, redroot
radish, wild
redmaids
rocket, london
shepherd's-purse
smartweed, annual
smartweed, green
smartweed, pennsylvania
sowthistle, annual
spurry, corn
sunflower, volunteer
swinecress
velvetleaf
wallflower, bushy
waterhemp, common

Partial control

partial10

cocklebur, common
eveningprimrose, cutleaf
henbit
prickly lettuce
mallow, common
radish, wild
sunflower, annual
sunflower, wild
tansymustard
thistle, russian

Controls with a tank-mix partner

needs partner1

horseweed, ALS-sensitive

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Harmony GT XP 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.

Harmony GT XP FAQ

What weeds does Harmony GT XP control?

The Harmony GT XP label names 64 weeds, including common buckwheat, wild buckwheat, smallflower buttercup, volunteer roundup ready canola, corn chamomile, and false chamomile. Control varies by crop, rate, and timing.

What crops is Harmony GT XP labeled for?

Harmony GT XP is labeled for 13 crops and uses, including field corn, soybeans, wheat, cotton, and sugar beet.

What is the active ingredient in Harmony GT XP? Is it a generic?

Harmony GT XP's active ingredient is thifensulfuron (MOA Group 2). 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 Harmony GT XP?

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 Harmony GT XP?

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.