Herbicide label
Medal EC Herbicide Label
Medal EC (EPA 100-816) is a Group 15 metolachlor herbicide labeled for 19 crops. The label lists 42 controlled weeds, plus partial-control, suppression, and partner-control categories.
Medal EC label facts
- Product Medal EC
- EPA Reg. No. 100-816
- Registrant Syngenta Crop Protection, LLC
- Active ingredient metolachlor
- MOA group 15
Crops on the Medal EC label
Medal EC is labeled for these 19 crops and uses, per the EPA label.
Weeds on the Medal EC label
The Medal EC label names 54 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 control42- barnyardgrass, common
- crabgrass, large
- crabgrass, smooth
- crowfootgrass
- cupgrass, prairie
- cupgrass, southwestern
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, millet
- foxtail, yellow
- goosegrass
- panicum, fall
- red rice
- ryegrass, italian
- signalgrass, broadleaf
- witchgrass
- amaranth, palmer
- amaranth, powell
- carpetweed
- galinsoga, hairy
- galinsoga, smallflower
- nightshade, eastern black
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- pusley, florida
- dayflower, benghal
- waterhemp, common
- nutsedge, yellow
- bentgrass, volunteer seedlings
- fescue, fine, volunteer seedlings
- bluegrass, kentucky, volunteer seedlings
- orchardgrass, volunteer seedlings
- ryegrass, perennial, volunteer seedlings
- fescue, tall, volunteer seedlings
- bluegrass, annual
- brome, california
- bluegrass, roughstalk
- brome, downy
- rattail fescue
Partial control
partial12- cupgrass, woolly
- johnsongrass, seedling
- millet, wild-proso
- panicum, texas
- sandbur, field
- sandbur, southern
- shattercane
- sorghum, volunteer
- beggarweed, florida
- eclipta
- nightshade, hairy
- purslane, common
Medal EC 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.
Medal EC FAQ
What weeds does Medal EC control?
The Medal EC label names 54 weeds, including common barnyardgrass, large crabgrass, smooth crabgrass, crowfootgrass, prairie cupgrass, and southwestern cupgrass. Control varies by crop, rate, and timing.
What crops is Medal EC labeled for?
Medal EC is labeled for 19 crops and uses, including field corn, soybeans, cotton, sunflower, and potato.
What is the active ingredient in Medal EC? Is it a generic?
Medal EC's active ingredient is metolachlor (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.