Herbicide label
Harmony GT XP Herbicide Label
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.
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.
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, common
- lentil, volunteer
- miner's lettuce
- mallow, little
- marshelder
- mayweed
- mayweed, stinking
- mustard, black
- mustard, tumble
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- pea, volunteer
- pennycress, field
- radish, wild
- redmaids
- rocket, london
- shepherd's-purse
- smartweed, green
- smartweed, pennsylvania
- sowthistle, annual
- spurry, corn
- sunflower
- swinecress
- wallflower, bushy
- waterhemp, common
- lambsquarters
- mustard, wild
- pigweed
- smartweed, annual
- velvetleaf
- pigweed, other species
- pigweed, redroot
Partial control
partial9- eveningprimrose, cutleaf
- henbit
- prickly lettuce
- mallow, common
- sunflower, annual
- tansymustard
- thistle, russian
- cocklebur, common
- sunflower, wild
Controls with a tank-mix partner
needs partner1- horseweed, ALS-sensitive
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.
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 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.
Sources
Last updated 2026-09-30.