Herbicide label
DuPont BL4 Herbicide Label
DuPont BL4 (EPA 352-842) is a Group 27 mesotrione herbicide labeled for 5 crops. The label lists 42 controlled weeds, plus partial-control, suppression, and partner-control categories.
“BL4 is a systemic preemergence and postemergence herbicide for the selective contact and residual control of broadleaf weeds in field corn, production seed field corn, field corn grown for silage, yellow popcorn, sweet corn, and other listed crops.”
DuPont BL4 label facts
- Product DuPont BL4
- EPA Reg. No. 352-842
- Registrant Corteva Agriscience
- Active ingredient mesotrione
- MOA group 27
Crops on the DuPont BL4 label
DuPont BL4 is labeled for these 5 crops and uses, per the EPA label.
Weeds on the DuPont BL4 label
The DuPont BL4 label names 49 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 control42- amaranth, palmer
- amaranth, powell
- amaranth, spiny
- atriplex
- buffalobur
- burcucumber
- carpetweed
- carrot, wild
- chickweed, common
- cocklebur, common
- crabgrass, large
- galinsoga
- hemp
- horsenettle
- horseweed
- jimsonweed
- kochia
- lambsquarters, common
- mallow, venice
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- pigweed, redroot
- pigweed, smooth
- pigweed, tumble
- potatoes, volunteer
- pusley, florida
- ragweed, common
- ragweed, giant
- sesbania, hemp
- sida, prickly
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, pale
- smartweed, pennsylvania
- sunflower, annual
- velvetleaf
- waterhemp, common
Partial control
partial7- buckwheat, wild
- dandelion
- dock, curly
- knotweed, prostrate
- nutsedge, yellow
- pokeweed, common
- thistle, canada
DuPont BL4 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.
DuPont BL4 FAQ
What weeds does DuPont BL4 control?
The DuPont BL4 label names 49 weeds, including palmer amaranth, powell amaranth, spiny amaranth, atriplex, buffalobur, and burcucumber. Control varies by crop, rate, and timing.
What crops is DuPont BL4 labeled for?
DuPont BL4 is labeled for 5 crops and uses, including field corn, corn silage, seed corn, popcorn, and sweet corn.
What is the active ingredient in DuPont BL4? Is it a generic?
DuPont BL4's active ingredient is mesotrione (MOA Group 27). 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.