Herbicide label

Harmony SG

Harmony SG (EPA 352-633) is a Group 2 thifensulfuron herbicide labeled for 14 crops. The label lists 47 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

Harmony SG label facts

Product Harmony SG
EPA Reg. No. 352-633
Registrant Corteva Agriscience
Active ingredient thifensulfuron
MOA group 2

Crops on the Harmony SG label

Harmony SG is labeled for these 14 crops and uses, per the EPA label.

field corn
soybean
wheat
cotton
sugar beet
canola
barley
sorghum
rice
durum wheat
oats
triticale
safflower
fallow

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Weeds on the Harmony SG label

The Harmony SG label names 68 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 control47

buckwheat, common
buckwheat, wild
buttercup, smallflower
chamomile, corn
chamomile, false
chamomile, scentless
chamomile, wild
chickweed, common
chickweed, mouseear
cress, mouse-ear
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, stinking
mustard, black
mustard, tumble
mustard, wild
pea, volunteer
pennycress, field
pigweed
pigweed, redroot
redmaids
rocket, london
shepherd's-purse
smartweed, annual
smartweed, green
smartweed, pennsylvania
sowthistle, annual
spurry, corn
sunflower, volunteer
swinecress
thistle, russian
velvetleaf
wallflower, bushy

Partial control

partial11

cocklebur, common
deadnettle, purple
eveningprimrose, cutleaf
henbit
jimsonweed
prickly lettuce
mallow, common
radish, wild
sunflower, annual
sunflower, wild
tansymustard

Controls with a tank-mix partner

needs partner14

canola, volunteer Roundup Ready
buckwheat, wild
horseweed, ALS-sensitive
kochia
cocklebur, common
jimsonweed
horseweed
nutsedge, yellow
ragweed, common
nightshade, black
corn, volunteer
shattercane
wild oats
ryegrass, annual

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Harmony SG 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, the rotational crop, and your state, region, and rainfall — some intervals differ in MT, ND, NE, SD, 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.

Harmony SG FAQ

What weeds does Harmony SG control?

The Harmony SG label names 68 weeds, including common buckwheat, wild buckwheat, smallflower buttercup, corn chamomile, false chamomile, and scentless chamomile. Control varies by crop, rate, and timing.

What crops is Harmony SG labeled for?

Harmony SG is labeled for 14 crops and uses, including field corn, soybeans, wheat, cotton, and sugar beet.

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

Harmony SG'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 SG?

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 Harmony SG?

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.