Herbicide label
Dimetric EXT
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.
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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.
- field corn
- soybean
- wheat
- potato
- barley
- alfalfa
- sweet corn
- grass seed
- chickpea
- lentil
- field pea
- sugarcane
- winter wheat
- fallow
Need the rate or timing for one of these? Filter every label by your crop, free.
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
- brome, 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
- mouse barley
- 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
- pigweeds
- 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
- cupgrass
- eclipta
- groundsel, common
- morningglory, smallflower
- nightshade, black
- nightshade, eastern black
- panicum, texas
- poorjoe
- ragweed, giant
- red rice
- senna, coffee
- shattercane
- smartweed, swamp
- sorghum, volunteer
- sprangletop
- stinkgrass
- thistle, canada
- waterhemp, common
- witchgrass
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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 and your soil texture.
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, the rotational crop, and your state, region, and rainfall — some intervals differ in AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, and WY.
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.
What's the plant-back interval after Dimetric EXT?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix Dimetric EXT?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with Dimetric EXT and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.