Herbicide label
Peak Herbicide Label
Peak (EPA 100-763) is a Group 2 prosulfuron herbicide labeled for 13 crops. The label lists 49 controlled weeds, plus partial-control, suppression, and partner-control categories.
Peak label facts
- Product Peak
- EPA Reg. No. 100-763
- Registrant Syngenta Crop Protection, LLC
- Active ingredient prosulfuron
- MOA group 2
Crops on the Peak label
Peak is labeled for these 13 crops and uses, per the EPA label.
Weeds on the Peak label
The Peak 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 control49- amaranth, palmer
- buffalobur
- buttercup, hairy
- mayweed, chamomile
- cocklebur, common
- eveningprimrose, cutleaf
- fiddleneck
- flixweed
- garlic, wild
- henbit
- kochia
- lambsquarters, common
- prickly lettuce
- mallow, venice
- mustard, blue
- mustard, tumble
- mustard, wild
- pennycress, field
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- radish, wild
- ragweed, common
- shepherd's-purse
- sunflower, annual
- tansymustard
- thistle, russian
- beggarweed, florida
- devil's claw
- horseweed
- jimsonweed
- ladysthumb
- puncturevine
- pusley, florida
- ragweed, giant
- sesbania, hemp
- sicklepod
- smartweed, pennsylvania
- velvetleaf
- waterhemp, common
- burcucumber
- carpetweed
- copperleaf, hophornbeam
- purslane, common
- purslane, horse
- chervil, bur
- miner's lettuce
- pineapple-weed
- wallflower, bushy
Partial control
partial13- bindweed, field
- bindweed, hedge
- buckwheat, wild
- chickweed, common
- mallow, common
- thistle, canada
- sida, prickly
- chickweed, mouseear
- gromwell, corn
- knotweed, prostrate
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, tall
Controls with a tank-mix partner
needs partner2- dogbane, hemp
- nightshades
Peak 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.
Peak FAQ
What weeds does Peak control?
The Peak label names 64 weeds, including palmer amaranth, buffalobur, hairy buttercup, chamomile mayweed, common cocklebur, and cutleaf eveningprimrose. Control varies by crop, rate, and timing.
What crops is Peak labeled for?
Peak is labeled for 13 crops and uses, including field corn, wheat, barley, sorghum, and corn silage.
What is the active ingredient in Peak? Is it a generic?
Peak's active ingredient is prosulfuron (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.