Herbicide label
METRICOR 4F Herbicide Label
METRICOR 4F (EPA 70506-68) is a Group 5 metribuzin herbicide labeled for 13 crops. The label lists 125 controlled weeds, plus partial-control, suppression, and partner-control categories.
METRICOR 4F label facts
- Product METRICOR 4F
- EPA Reg. No. 70506-68
- Registrant UPL NA, Inc.
- Active ingredient metribuzin
- MOA group 5
Crops on the METRICOR 4F label
METRICOR 4F is labeled for these 13 crops and uses, per the EPA label.
Weeds on the METRICOR 4F label
The METRICOR 4F label names 164 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 control125- ageratum
- alexandergrass
- amaranth, spiny
- amaranth, spleen
- crotalaria, showy
- cudweed
- euphorbia, wild
- fireweed
- flora's paintbrush
- foxtail, bristly
- groundsel, cressleaf
- guineagrass
- haole koa
- hialoa
- hilahila
- oats, winter
- panicum, broadleaf
- plushgrass
- richardia
- ricegrass
- rocket, london
- spurge, garden
- spurge, graceful
- tarweed
- anoda, spurred
- beggarweed, florida
- copperleaf, hophornbeam
- crowfootgrass
- dayflower
- galinsoga
- junglerice
- mexicanweed
- millet, browntop
- redweed
- sesbania, hemp
- smartweed
- spurge, spotted
- starbur, bristly
- barley, little
- brome, japanese
- pepperweed, virginia
- rescuegrass
- barnyardgrass, common
- ragweed, common
- bindweed, field
- bittercress
- catchfly, conical
- catchweed
- corncockle
- eveningprimrose, cutleaf
- falseflax, smallseed
- fiddleneck
- filaree, redstem
- carolina geranium
- gromwell
- miner's lettuce
- polemonium, annual
- radish, wild
- speedwell
- turnip, wild
- bluegrass, annual
- brome, downy
- cheat
- mustard, blue
- mustard, hill
- wild oats
- bromegrass, smooth
- cockle, white
- deadnettle, purple
- fleabane, rough
- flixweed
- foxtail barley
- rocket, yellow
- salsify, meadow
- buckwheat, wild
- buffalobur
- ladysthumb
- mallow, venice
- sandbur, field
- sida, prickly
- velvetleaf
- carpetweed
- sicklepod
- chickweed, common
- chickweed, mouseear
- cocklebur, common
- jimsonweed
- panicum, fall
- cowcockle
- crabgrass
- crabgrass, large
- crabgrass, smooth
- mustard, indian
- dandelion
- dogfennel
- foxtail
- foxtail, giant
- foxtail, yellow
- foxtail, green
- goosegrass
- henbit
- horseweed
- johnsongrass, seedling
- knotweed
- pusley, florida
- knotweed, prostrate
- pineapple-weed
- kochia
- lambsquarters, common
- mustard, tansy
- mustard, tumble
- mustard, wild
- pennycress, field
- pigweed
- pigweed, redroot
- pigweed, smooth
- prickly lettuce
- purslane, common
- shepherd's-purse
- signalgrass, broadleaf
- smartweed, pennsylvania
- sowthistle
- sunflower
- thistle, russian
- volunteer wheat
Partial control
partial2- knawel
- dock, curly
Suppression
suppression15- horsenettle
- poinsettia, wild
- barley, hare
- blackgrass
- bluegrass, bulbous
- brome, ripgut
- buttercup
- vetch, winter
- windgrass, common
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, tall
- nightshade, hairy
- nutsedge, yellow
- spurry, corn
Controls with a tank-mix partner
needs partner22- amaranth, palmer
- burcucumber
- nightshade, eastern black
- smartweed, swamp
- thistle, canada
- barley
- eclipta
- poorjoe
- foxtail, robust purple
- groundsel, common
- ryegrass
- morningglory, smallflower
- panicum, texas
- sorghum, volunteer
- sprangletop
- stinkgrass
- nightshade, black
- ragweed, giant
- red rice
- shattercane
- waterhemp, common
- witchgrass
METRICOR 4F 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.
METRICOR 4F FAQ
What weeds does METRICOR 4F control?
The METRICOR 4F label names 164 weeds, including ageratum, alexandergrass, spiny amaranth, spleen amaranth, showy crotalaria, and cudweed. Control varies by crop, rate, and timing.
What crops is METRICOR 4F labeled for?
METRICOR 4F is labeled for 13 crops and uses, including field corn, soybeans, potato, barley, and alfalfa.
What is the active ingredient in METRICOR 4F? Is it a generic?
METRICOR 4F'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.