Herbicide label
OxyStar 4L Herbicide Label
OxyStar 4L (EPA 42750-199) is a Group 14 oxyfluorfen herbicide labeled for 6 crops. The label lists 44 controlled weeds, plus partial-control, suppression, and partner-control categories.
“OxyStar® 4L herbicide is a selective herbicide for postemergence and preemergence residual weed control in labeled crops.”
OxyStar 4L label facts
- Product OxyStar 4L
- EPA Reg. No. 42750-199
- Registrant Albaugh, LLC
- Active ingredient oxyfluorfen
- MOA group 14
Crops on the OxyStar 4L label
OxyStar 4L is labeled for these 6 crops and uses, per the EPA label.
Weeds on the OxyStar 4L label
The OxyStar 4L label names 48 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 control44- bedstraw, catchweed
- knotweed, prostrate
- bluegrass, annual
- ryegrass, italian
- mallow
- fiddleneck
- filaree, redstem
- filaree, whitestem
- carolina geranium
- henbit
- rocket, london
- mustard, black
- nettle, burning
- smartweed, ladysthumb
- cocklebur, common
- croton, tropic
- jimsonweed
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, tall
- nightshade, black
- poinsettia, wild
- sesbania, hemp
- smartweed, pennsylvania
- groundcherry
- sida, prickly
- velvetleaf
- groundsel, common
- lambsquarters, common
- nightshade, hairy
- prickly lettuce
- mustard, Jim Hill
- mustard, tumble
- mustard, wild
- pigweed, redroot
- purslane, common
- shepherd's-purse
- sowthistle, annual
- bluegrass, kentucky
- fescue
- orchardgrass
- bentgrass, colonial
- bentgrass, creeping
Partial control
partial1- sicklepod
Suppression
suppression3- bentgrass
- brome, california
- ryegrass, perennial
OxyStar 4L 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.
OxyStar 4L FAQ
What weeds does OxyStar 4L control?
The OxyStar 4L label names 48 weeds, including catchweed bedstraw, prostrate knotweed, annual bluegrass, italian ryegrass, mallow, and fiddleneck. Control varies by crop, rate, and timing.
What crops is OxyStar 4L labeled for?
OxyStar 4L is labeled for 6 crops and uses, including field corn, soybeans, cotton, mint, and fallow.
What is the active ingredient in OxyStar 4L? Is it a generic?
OxyStar 4L's active ingredient is oxyfluorfen (MOA Group 14). 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.