Herbicide label
Helmquat 3SL Herbicide Label
Helmquat 3SL (EPA 74530-48) is a Group 22 paraquat herbicide labeled for 28 crops. The label lists 22 controlled weeds, plus partial-control, suppression, and partner-control categories.
“HELMQUAT 3SL is a contact herbicide that desiccates all green plant tissue.”
Helmquat 3SL label facts
- Product Helmquat 3SL
- EPA Reg. No. 74530-48
- Registrant Helm Agro US, Inc.
- Active ingredient paraquat
- MOA group 22
Crops on the Helmquat 3SL label
Helmquat 3SL is labeled for these 28 crops and uses, per the EPA label.
Weeds on the Helmquat 3SL label
The Helmquat 3SL label names 43 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 control22- barley
- pigweed
- rye, volunteer
- witchweed
- bluegrass, annual
- brome, downy
- chickweed
- brome, rescue
- dogfennel
- foxtail
- henbit
- wild oats
- rocket, london
- sowthistle
- tansymustard
- fiddleneck
- maids, red
- spikeweed
- groundsel, common
- ryegrass, italian
- shepherd's-purse
- volunteer wheat
Partial control
partial17- cocklebur, common
- horseweed
- knotweed
- kochia
- lambsquarters
- mallow
- morningglory
- panicum, fall
- ragweed, giant
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed, pennsylvania
- starbur, bristly
- velvetleaf
- prickly lettuce
- barnyardgrass, common
Suppression
suppression4- bindweed, hedge
- dandelion
- thistle, canada
- sedge
Helmquat 3SL 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.
Helmquat 3SL FAQ
What weeds does Helmquat 3SL control?
The Helmquat 3SL label names 43 weeds, including barley, pigweed, volunteer rye, witchweed, annual bluegrass, and downy brome. Control varies by crop, rate, and timing.
What crops is Helmquat 3SL labeled for?
Helmquat 3SL is labeled for 28 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.
What is the active ingredient in Helmquat 3SL? Is it a generic?
Helmquat 3SL's active ingredient is paraquat (MOA Group 22). 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.