Herbicide label
TRICOR 4F Herbicide Label
TRICOR 4F (EPA 70506-68) is a Group 5 metribuzin herbicide labeled for 12 crops. The label lists 117 controlled weeds, plus partial-control, suppression, and partner-control categories.
TRICOR 4F label facts
- Product TRICOR 4F
- EPA Reg. No. 70506-68
- Registrant UPL NA, Inc.
- Active ingredient metribuzin
- MOA group 5
Crops on the TRICOR 4F label
TRICOR 4F is labeled for these 12 crops and uses, per the EPA label.
Weeds on the TRICOR 4F label
The TRICOR 4F label names 134 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 control117- amaranth, palmer
- mustard, winter annual
- velvetleaf
- anoda, spurred
- beggarweed, florida
- buffalobur
- copperleaf, hophornbeam
- crowfootgrass
- cupgrass
- dayflower
- galinsoga
- junglerice
- knotweed
- mallow, venice
- mexicanweed
- millet, browntop
- nightshade, black
- panicum, texas
- pusley, florida
- redweed
- red rice
- sandbur
- sesbania
- shattercane
- sida, prickly
- smartweed
- sorghum, volunteer
- sprangletop
- spurge, spotted
- starbur, bristly
- stinkgrass
- witchgrass
- foxtail barley
- bromegrass, smooth
- cockle, white
- fleabane, rough
- flixweed
- pepperweed
- salsify, meadow
- barley, little
- brome, japanese
- buckwheat, wild
- chickweed, mouseear
- pepperweed, virginia
- rescuegrass
- barnyardgrass, common
- bittercress
- bluegrass, annual
- bluegrass, bulbous
- 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, roughstalk
- brome, downy
- cheat
- mustard, blue
- wild oats
- carpetweed
- cocklebur, common
- jimsonweed
- nutsedge, yellow
- panicum, fall
- sicklepod
- chickweed, common
- henbit
- cowcockle
- crabgrass
- goosegrass
- purslane
- crabgrass, large
- purslane, common
- crabgrass, smooth
- foxtail, giant
- foxtail, yellow
- mustard, indian
- pigweed, smooth
- dandelion
- deadnettle, purple
- rocket, yellow
- dogfennel
- foxtail
- foxtail, green
- horseweed
- johnsongrass, seedling
- signalgrass, broadleaf
- knotweed, prostrate
- pineapple-weed
- kochia
- ladysthumb
- waterhemp, common
- lambsquarters
- lambsquarters, common
- prickly lettuce
- mustard, tansy
- mustard, tumble
- mustard, treacle
- volunteer wheat
- mustard, wild
- pennycress, field
- pigweed
- pigweed, redroot
- ragweed, common
- shepherd's-purse
- smartweed, pennsylvania
- sunflower
- thistle, russian
Partial control
partial2- dock, curly
- knawel
Suppression
suppression15- horsenettle
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, smallflower
- morningglory, tall
- poinsettia, wild
- barley, hare
- blackgrass
- brome, ripgut
- buttercup
- vetch
- whitlowgrass
- windgrass, common
- nightshade, hairy
- spurry, corn
TRICOR 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.
TRICOR 4F FAQ
What weeds does TRICOR 4F control?
The TRICOR 4F label names 134 weeds, including palmer amaranth, winter annual mustard, velvetleaf, spurred anoda, florida beggarweed, and buffalobur. Control varies by crop, rate, and timing.
What crops is TRICOR 4F labeled for?
TRICOR 4F is labeled for 12 crops and uses, including field corn, soybeans, wheat, potato, and barley.
What is the active ingredient in TRICOR 4F? Is it a generic?
TRICOR 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.