Herbicide label
Shredder MCPA
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.
Build the herbicide program for your field
Tell FieldMarshal your crop, weeds, and rotation. Get back a complete program, products, rates, plant-back, and tank-mix, with every line checked against the label so you can verify it yourself.
Built from 1,700+ EPA herbicide labels and 49 state weed-control guides. Made for crop advisors and growers.
Free to create your account. Every line references the label, so you can check it against the source.
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.
Need the rate or timing for one of these? Filter every label by your crop, free.
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
- beggarticks
- bindweed, field
- bindweed, hedge
- blueweed, texas
- bulrush
- burdock
- burhead
- buttercup, corn
- buttercup, creeping
- buttercup, hairy
- carrot, wild
- cocklebur, common
- hoary cress
- dandelion
- garlic, wild
- goatsbeard
- poison hemlock
- hempnettle
- honeysuckle
- indigo, curly
- jimsonweed
- kochia
- ladysthumb
- lambsquarters, common
- prickly lettuce
- mallow, venice
- marshelder
- dragonhead mint
- mustards
- onion, wild
- pennycress, field
- pepperweed, field
- pigweed, prostrate
- pigweed, smooth
- pigweed, tumble
- plantain
- water plantain
- puncturevine
- radish, wild
- ragweed, common
- ragweed, giant
- ammannia, purple
- rocket, yellow
- rush, soft
- sage, wild
- shepherd's-purse
- sicklepod
- smartweed
- stinkweed
- sunflower
- thistle, bull
- thistle, canada
- velvetleaf
- whitebrush
- witchweed
Suppression
suppression24- arrowhead
- bindweed, field
- bindweed, hedge
- blueweed, texas
- bulrush
- buttercup, corn
- buttercup, creeping
- buttercup, hairy
- hoary cress
- dandelion
- garlic, wild
- hempnettle
- honeysuckle
- indigo, curly
- dragonhead mint
- onion, wild
- plantain
- water plantain
- rocket, yellow
- rush, soft
- sage, wild
- smartweed
- thistle, canada
- whitebrush
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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, the rotational crop, and your state, region, and rainfall — some intervals differ in ID, OR, and WA.
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, beggarticks, field bindweed, hedge bindweed, texas blueweed, and bulrush. 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.
What's the plant-back interval after Shredder MCPA?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix Shredder MCPA?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with Shredder MCPA and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.