Herbicide label

Harmony Extra SG

Harmony Extra SG (EPA 279-9602) is a Group 2 thifensulfuron and tribenuron-methyl herbicide labeled for 13 crops. The label lists 73 controlled weeds, plus partial-control, suppression, and partner-control categories.

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Official EPA label (PDF)

“HARMONY EXTRA SG herbicide is absorbed primarily through the foliage of plants, rapidly inhibiting the growth of susceptible weeds.”

— Harmony Extra SG EPA label, Reg. No. 279-9602

Harmony Extra SG label facts

Product Harmony Extra SG
EPA Reg. No. 279-9602
Registrant FMC Corporation
Active ingredient thifensulfuron and tribenuron-methyl
MOA group 2

Crops on the Harmony Extra SG label

Harmony Extra SG is labeled for these 13 crops and uses, per the EPA label.

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

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Weeds on the Harmony Extra SG label

The Harmony Extra SG label names 84 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 control73

knawel, annual
chamomile, false
redmaids
sowthistle, annual
mustard, black
chickweed, field
pennycress, field
pigweed, redroot
thistle, russian
mustard, blue
mustard, purple
filaree, redstem
filaree, Texas
chamomile, scentless
mayweed
dock, broadleaf
buttercup, bur
wallflower, bushy
mustard, treacle
pepperweed, clasping
fiddleneck
flixweed
smartweed, green
henbit
hempnettle
kochia
shepherd's-purse
lambsquarters, slimleaf
buttercup, smallflower
falseflax, smallseed
chickweed, stinking
buckwheat, common
ladysthumb
mayweed, stinking
dogfennel
chickweed, common
cocklebur, common
groundsel, common
lambsquarters, common
sage, lanceleaf
rocket, london
marshelder
mayweed, chamomile
swinecress
tansymustard
fiddleneck, tarweed
mustard, tumble
mustard, Jim Hill
radish, common
ragweed, common
sunflower, annual
chamomile, corn
gromwell, corn
spurry, corn
cowcockle
cress, mouse-ear
miner's lettuce
lambsquarters, narrowleaf
catchfly, nightflowering
smartweed, pennsylvania
pineapple-weed
prickly lettuce
knotweed, prostrate
pigweed, prostrate
lentil, volunteer
pea, volunteer
sunflower, volunteer
buckwheat, wild
chamomile, wild
garlic, wild
mustard, wild
radish, wild
dock, curly

Partial control

partial11

thistle, canada
carolina geranium
eveningprimrose, cutleaf
dandelion
nightshade, cutleaf
nightshade, hairy
vetch
vetch, hairy
bedstraw, catchweed
mallow, common
mallow, little

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Harmony Extra 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.

Get the rate for your field: build a program and FieldMarshal cites the exact per-acre rate for your crop to 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 ID, OR, and WA.

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 Extra SG FAQ

What weeds does Harmony Extra SG control?

The Harmony Extra SG label names 84 weeds, including annual knawel, false chamomile, redmaids, annual sowthistle, black mustard, and field chickweed. Control varies by crop, rate, and timing.

What crops is Harmony Extra SG labeled for?

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

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

Harmony Extra SG's active ingredient is thifensulfuron and tribenuron-methyl (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 Extra 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 Extra 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.