Herbicide label
Shredder MCPA Herbicide Label
Shredder MCPA (EPA 1381-104) is a Group 4 mcpa herbicide labeled for 11 crops. The label lists 56 controlled weeds, plus partial-control, suppression, and partner-control categories.
Shredder MCPA label facts
- Product Shredder MCPA
- EPA Reg. No. 1381-104
- Registrant WinField Solutions, LLC
- Active ingredient mcpa
- MOA group 4
Crops on the Shredder MCPA label
Shredder MCPA is labeled for these 11 crops and uses, per the EPA label.
Weeds on the Shredder MCPA label
The Shredder MCPA label names 56 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 control56- arrowhead
- bindweed, field
- bindweed, hedge
- bulrush
- buttercup, corn
- buttercup, creeping
- buttercup, hairy
- dandelion
- garlic, wild
- honeysuckle
- indigo, curly
- dragonhead mint
- onion, wild
- plantain
- water plantain
- rocket, yellow
- rush, soft
- sage, wild
- smartweed
- whitebrush
- beggarticks
- burdock
- burhead
- carrot, wild
- cocklebur, common
- goatsbeard
- poison hemlock
- hempnettle
- jimsonweed
- kochia
- ladysthumb
- lambsquarters, common
- prickly lettuce
- mallow, venice
- marshelder
- mustards
- pennycress, field
- pepperweed, field
- pigweed, prostrate
- pigweed, smooth
- pigweed, tumble
- puncturevine
- radish, wild
- ragweed, common
- ragweed, giant
- ammannia, purple
- shepherd's-purse
- sicklepod
- stinkweed
- sunflower
- thistle, bull
- velvetleaf
- witchweed
- blueweed, texas
- hoary cress
- thistle, canada
Shredder MCPA 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.
Shredder MCPA FAQ
What weeds does Shredder MCPA control?
The Shredder MCPA label names 56 weeds, including arrowhead, field bindweed, hedge bindweed, bulrush, corn buttercup, and creeping buttercup. Control varies by crop, rate, and timing.
What crops is Shredder MCPA labeled for?
Shredder MCPA is labeled for 11 crops and uses, including wheat, barley, alfalfa, oats, and cereal rye.
What is the active ingredient in Shredder MCPA? Is it a generic?
Shredder MCPA's active ingredient is mcpa (MOA Group 4). 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.