Herbicide label
Dimetric EXT Herbicide Label
Dimetric EXT (EPA 1381-197) is a Group 5 metribuzin herbicide labeled for 14 crops. The label lists 134 controlled weeds, plus partial-control, suppression, and partner-control categories.
Dimetric EXT label facts
- Product Dimetric EXT
- EPA Reg. No. 1381-197
- Registrant WinField Solutions, LLC
- Active ingredient metribuzin
- MOA group 5
Crops on the Dimetric EXT label
Dimetric EXT is labeled for these 14 crops and uses, per the EPA label.
Weeds on the Dimetric EXT label
The Dimetric EXT label names 174 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 control134- ageratum
- alexandergrass
- amaranth, spiny
- amaranth, spleen
- anoda, spurred
- barnyardgrass, common
- beggarweed, florida
- bindweed, field
- bittercress
- bluegrass, annual
- brome, downy
- brome, japanese
- bromegrass, smooth
- buckwheat, wild
- buffalobur
- canarygrass, littleseed
- carpetweed
- catchfly, conical
- catchweed
- cheat
- chickweed, common
- chickweed, mouseear
- cockle, white
- cocklebur, common
- copperleaf, hophornbeam
- corncockle
- cowcockle
- crabgrass
- crowfootgrass
- cudweed
- dandelion
- dayflower
- deadnettle, purple
- dogfennel
- euphorbia, wild
- eveningprimrose, cutleaf
- falseflax, smallseed
- fiddleneck
- filaree, redstem
- fireweed
- fleabane, rough
- flixweed
- foxtail barley
- foxtail, bristlegrass
- foxtail, bristly
- foxtail, giant
- foxtail, green
- foxtail, yellow
- fumitory
- galinsoga
- geranium
- goosefoot, nettleleaf
- goosegrass
- gromwell, carolina
- groundsel, cressleaf
- guineagrass
- haole koa
- henbit
- hialoa
- hilahila
- horseweed
- jimsonweed
- johnsongrass, seedling
- junglerice
- knotweed
- knotweed, prostrate
- knotweed, silversheath
- kochia
- ladysthumb
- lambsquarters, common
- miner's lettuce
- prickly lettuce
- barley, little
- mallow, little
- mallow, venice
- mexicanweed
- millet, browntop
- barley, mouse
- mustard, blue
- mustard, indian
- mustard, tansy
- mustard, treacle
- mustard, tumble
- mustard, wild
- wild oats
- oats, winter
- paintbrush, flora's
- panicum, broadleaf
- panicum, fall
- pennycress, field
- pepperweed
- pepperweed, field
- pepperweed, virginia
- pigweed, redroot
- pigweed, smooth
- pigweed
- pineapple-weed
- plushgrass
- polemonium, annual
- purslane, common
- pusley, florida
- radish, wild
- ragweed, common
- rattail fescue
- rattlepod
- redweed
- rescuegrass
- richardia
- ricegrass
- rocket, london
- rocket, yellow
- salsify, meadow
- sandbur, field
- sesbania
- shepherd's-purse
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed, pennsylvania
- sorrel, red
- sowthistle
- sowthistle, spiny
- speedwell
- spurge, garden
- spurge, graceful
- spurge, spotted
- starbur, bristly
- sunflower
- tarweed
- thistle, russian
- toadflax
- turnip, wild
- velvetleaf
- volunteer wheat
Partial control
partial2- dock, curly
- knawel
Suppression
suppression17- barley, hare
- blackgrass
- bluegrass, bulbous
- brome, ripgut
- buttercup
- horsenettle
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, tall
- nightshade, hairy
- nutsedge, yellow
- poinsettia, wild
- ryegrass
- spurry, corn
- vetch, winter
- windgrass, common
Controls with a tank-mix partner
needs partner21- barley
- burcucumber
- nightshade, eastern black
- ragweed, giant
- waterhemp, common
- smartweed, swamp
- thistle, canada
- cupgrass
- nightshade, black
- eclipta
- poorjoe
- groundsel, common
- morningglory, smallflower
- panicum, texas
- red rice
- shattercane
- sorghum, volunteer
- sprangletop
- stinkgrass
- witchgrass
- senna, coffee
Dimetric EXT 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.
Dimetric EXT FAQ
What weeds does Dimetric EXT control?
The Dimetric EXT label names 174 weeds, including ageratum, alexandergrass, spiny amaranth, spleen amaranth, spurred anoda, and common barnyardgrass. Control varies by crop, rate, and timing.
What crops is Dimetric EXT labeled for?
Dimetric EXT is labeled for 14 crops and uses, including field corn, soybeans, wheat, potato, and barley.
What is the active ingredient in Dimetric EXT? Is it a generic?
Dimetric EXT's active ingredient is metribuzin (MOA Group 5). 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.