Herbicide label
Harmony Extra SG Herbicide Label
Harmony Extra SG (EPA 352-714) is a Group 2 thifensulfuron and tribenuron-methyl herbicide labeled for 9 crops. The label lists 75 controlled weeds, plus partial-control, suppression, and partner-control categories.
“HARMONY® EXTRA SG is absorbed primarily through the foliage of plants, rapidly inhibiting the growth of susceptible weeds.”
Harmony Extra SG label facts
- Product Harmony Extra SG
- EPA Reg. No. 352-714
- Registrant Corteva Agriscience
- Active ingredient thifensulfuron and tribenuron-methyl
- MOA group 2
Crops on the Harmony Extra SG label
Harmony Extra SG is labeled for these 9 crops and uses, per the EPA label.
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 control75- knawel, annual
- sowthistle, annual
- mustard, black
- mustard, blue
- mustard, purple
- dock, broadleaf
- buttercup, bur
- wallflower, bushy
- mustard, treacle
- pepperweed, clasping
- fiddleneck
- buckwheat, common
- chickweed, common
- cocklebur, common
- groundsel, common
- lambsquarters, common
- radish, common
- ragweed, common
- sunflower, annual
- chamomile, corn
- gromwell, corn
- spurry, corn
- cowcockle
- cress, mouse-ear
- dock, curly
- chamomile, false
- chickweed, field
- pennycress, field
- filaree, redstem
- filaree, Texas
- flixweed
- smartweed, green
- henbit
- hempnettle
- kochia
- ladysthumb
- rocket, london
- marshelder
- mayweed, chamomile
- miner's lettuce
- lambsquarters, narrowleaf
- catchfly, nightflowering
- smartweed, pennsylvania
- pineapple-weed
- prickly lettuce
- knotweed, prostrate
- pigweed, prostrate
- redmaids
- pigweed, redroot
- thistle, russian
- chamomile, scentless
- mayweed
- shepherd's-purse
- lambsquarters, slimleaf
- buttercup, smallflower
- falseflax, smallseed
- chickweed, stinking
- mayweed, stinking
- dogfennel
- swinecress
- tansymustard
- fiddleneck, tarweed
- mustard, tumble
- mustard, Jim Hill
- lentil, volunteer
- pea, volunteer
- sunflower
- buckwheat, wild
- chamomile, wild
- garlic, wild
- mustard, wild
- radish, wild
- thistle, canada
- vetch
- vetch, hairy
Suppression
suppression8- carolina geranium
- bedstraw, catchweed
- eveningprimrose, cutleaf
- dandelion
- mallow, common
- mallow, little
- nightshade, cutleaf
- nightshade, hairy
Controls with a tank-mix partner
needs partner1- sage, lanceleaf
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 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 Extra SG FAQ
What weeds does Harmony Extra SG control?
The Harmony Extra SG label names 84 weeds, including annual knawel, annual sowthistle, black mustard, blue mustard, purple mustard, and broadleaf dock. Control varies by crop, rate, and timing.
What crops is Harmony Extra SG labeled for?
Harmony Extra SG is labeled for 9 crops and uses, including field corn, soybeans, wheat, cotton, and barley.
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.
Sources
Last updated 2026-09-30.