Herbicide label
TopNotch Herbicide Label
TopNotch (EPA 62719-369) is a Group 15 acetochlor herbicide labeled for 5 crops. The label lists 34 controlled weeds, plus partial-control, suppression, and partner-control categories.
“TopNotch is a preemergence herbicide for which adjuvants have little or no influence on performance.”
TopNotch label facts
- Product TopNotch
- EPA Reg. No. 62719-369
- Registrant Corteva Agriscience
- Active ingredient acetochlor
- MOA group 15
Crops on the TopNotch label
TopNotch is labeled for these 5 crops and uses, per the EPA label.
Weeds on the TopNotch label
The TopNotch label names 60 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 control34- barnyardgrass, common
- beggarweed, florida
- carpetweed
- crabgrass spp.
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, robust (purple, white)
- foxtail, yellow
- galinsoga
- goosegrass
- lambsquarters, common
- foxtail, millet
- nightshade, black
- nightshade, hairy
- nutsedge, yellow
- panicum, browntop
- panicum, fall
- panicum, texas
- pigweed
- purslane, common
- pusley, florida
- ragweed, common
- red rice
- sandbur, southern
- sida, prickly
- signalgrass, broadleaf
- smartweed
- sprangletop, red
- waterhemp, common
- witchgrass
Partial control
partial6- cupgrass, woolly
- johnsongrass, seedling
- kochia
- millet, wild-proso
- sandbur, field
- shattercane
Controls with a tank-mix partner
needs partner20- cocklebur, common
- groundcherry spp.
- jimsonweed
- morningglory
- mustards
- ragweed, giant
- sicklepod
- velvetleaf
- lambsquarters
- triazine resistant velvetleaf
- triazine resistant lambsquarters
- triazine resistant pigweed species
- triazine resistant waterhemp
- sunflower, annual
- annuals
- perennials
- crabgrass
- emerged weeds
- emerged broadleaf weeds
- broadleaf weeds
TopNotch 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.
TopNotch FAQ
What weeds does TopNotch control?
The TopNotch label names 60 weeds, including common barnyardgrass, florida beggarweed, carpetweed, crabgrass spp., crowfootgrass, and prairie cupgrass. Control varies by crop, rate, and timing.
What crops is TopNotch labeled for?
TopNotch is labeled for 5 crops and uses, including field corn, seed corn, corn silage, sweet corn, and popcorn.
What is the active ingredient in TopNotch? Is it a generic?
TopNotch's active ingredient is acetochlor (MOA Group 15). 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.