Herbicide label
SINISTER INTENT Herbicide Label
SINISTER INTENT (EPA 5905-603) is a Group 14 and 15 fomesafen and metolachlor herbicide labeled for 2 crops. The label lists 31 controlled weeds, plus partial-control, suppression, and partner-control categories.
SINISTER INTENT label facts
- Product SINISTER INTENT
- EPA Reg. No. 5905-603
- Registrant Helena Agri-Enterprises, LLC, d/b/a Helena Chemical Comp
- Active ingredient fomesafen and metolachlor
- MOA group 14 and 15
Crops on the SINISTER INTENT label
SINISTER INTENT is labeled for these 2 crops and uses, per the EPA label.
Weeds on the SINISTER INTENT label
The SINISTER INTENT label names 46 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 control31- barnyardgrass, common
- cupgrass, prairie
- goosegrass
- signalgrass, broadleaf
- crabgrass spp.
- cupgrass, southwestern
- junglerice
- witchgrass
- crowfootgrass
- foxtail spp.
- panicum, fall
- carpetweed
- pennycress, field
- pusley, florida
- spurge, spotted
- ecliptia
- pepperweed, virginia
- ragweed, common
- starbur, bristly
- galinsoga spp.
- pigweed spp.
- redweed
- waterhemp, common
- lambsquarters, common
- poinsettia, wild
- smartweed, ladysthumb
- nightshade, eastern black
- purslane, common
- smartweed, pennsylvania
- sesbania, hemp
- morningglory
Partial control
partial15- johnsongrass, seedling
- panicum, texas
- red rice
- sandbur spp.
- shattercane
- cocklebur, common
- sida, prickly
- horseweed
- nightshade, hairy
- sunflower, annual
- jimsonweed
- ragweed, giant
- velvetleaf
- nutsedge, yellow
- pigweed
SINISTER INTENT 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.
SINISTER INTENT FAQ
What weeds does SINISTER INTENT control?
The SINISTER INTENT label names 46 weeds, including common barnyardgrass, prairie cupgrass, goosegrass, broadleaf signalgrass, crabgrass spp., and southwestern cupgrass. Control varies by crop, rate, and timing.
What crops is SINISTER INTENT labeled for?
SINISTER INTENT is labeled for 2 crops and uses, including soybeans and cotton.
What is the active ingredient in SINISTER INTENT? Is it a generic?
SINISTER INTENT's active ingredient is fomesafen and metolachlor (MOA Group 14 and 15). 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.