Herbicide label

Treaty Extra Herbicide Label

Treaty Extra (EPA 71368-76) is a Group 2 thifensulfuron and tribenuron-methyl herbicide labeled for 13 crops. The label lists 66 controlled weeds, plus partial-control, suppression, and partner-control categories.

“This product is absorbed primarily through the foliage of plants, rapidly inhibiting the growth of susceptible weeds.”

— Treaty Extra EPA label, Reg. No. 71368-76

Treaty Extra label facts

Crops on the Treaty Extra label

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

Weeds on the Treaty Extra label

The Treaty Extra label names 77 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 control66
  • buckwheat, common
  • buckwheat, wild
  • buttercup, bur
  • buttercup, smallflower
  • catchfly, nightflowering
  • chamomile, corn
  • chamomile, false
  • mayweed, chamomile
  • chamomile, scentless
  • chamomile, wild
  • chickweed, common
  • chickweed, field
  • chickweed, stinking
  • cowcockle
  • cress, mouse-ear
  • dock, broadleaf
  • dock, curly
  • falseflax, smallseed
  • fiddleneck
  • fiddleneck, tarweed
  • filaree, redstem
  • filaree, texas
  • flixweed
  • garlic, wild
  • gromwell, corn
  • groundsel, common
  • knawel, annual
  • kochia
  • knotweed, prostrate
  • ladysthumb
  • lambsquarters, common
  • lambsquarters, narrowleaf
  • lambsquarters, slimleaf
  • lentil, volunteer
  • miner's lettuce
  • prickly lettuce
  • marshelder
  • mayweed, stinking
  • mustard, black
  • mustard, blue
  • mustard, tumble
  • mustard, wild
  • pea, volunteer
  • pennycress, field
  • pepperweed, clasping
  • pigweed, prostrate
  • pigweed, redroot
  • pineapple-weed
  • radish, common
  • radish, wild
  • redmaids
  • rocket, london
  • shepherd's-purse
  • smartweed, green
  • smartweed, pennsylvania
  • sowthistle, annual
  • spurry, corn
  • sunflower, annual
  • sunflower
  • swinecress
  • tansymustard
  • thistle, canada
  • thistle, russian
  • vetch
  • vetch, hairy
  • wallflower, bushy

Partial control

partial7
  • bedstraw, catchweed
  • eveningprimrose, cutleaf
  • carolina geranium
  • mallow, common
  • mallow, little
  • nightshade, cutleaf
  • nightshade, hairy

Controls with a tank-mix partner

needs partner4
  • cocklebur, common
  • ragweed, common
  • sage, lanceleaf
  • wild oats

Treaty Extra 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.

Treaty Extra FAQ

What weeds does Treaty Extra control?

The Treaty Extra label names 77 weeds, including common buckwheat, wild buckwheat, bur buttercup, smallflower buttercup, nightflowering catchfly, and corn chamomile. Control varies by crop, rate, and timing.

What crops is Treaty Extra labeled for?

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

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

Treaty Extra'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.