Herbicide label
Kerb 50-W
Kerb 50-W (EPA 62719-397) is a Group 23 propyzamide herbicide labeled for 3 crops. The label lists 51 controlled weeds, plus partial-control, suppression, and partner-control categories.
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“Kerb 50-W is a selective herbicide for the control of susceptible weeds in either established (ratoon) or transplanted globe artichokes.”
Kerb 50-W label facts
- Product Kerb 50-W
- EPA Reg. No. 62719-397
- Registrant Corteva Agriscience
- Active ingredient propyzamide
- MOA group 23
Crops on the Kerb 50-W label
Kerb 50-W is labeled for these 3 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 Kerb 50-W label
The Kerb 50-W label names 51 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 control51- foxtail barley
- barley
- barnyardgrass, common
- bentgrass
- bluegrass, annual
- bluegrass, bulbous
- bluegrass, kentucky
- brome, downy
- canarygrass
- carpetweed
- chickweed
- chickweed, common
- chickweed, mouse-ear
- crabgrass
- crabgrass, large
- dodder
- dodder, field
- fescue, tall
- foxtail, yellow
- goatgrass, jointed
- goosefoot, nettleleaf
- goosegrass
- grain, volunteer
- henbit
- knotweed
- knotweed, prostrate
- lambsquarters, common
- lovegrass species
- mallow, little
- morning glory, annual
- mustard, wild
- nettle, burning
- nightshade, black
- nightshade, hairy
- oat, volunteer
- wild oats
- orchardgrass
- panicum, fall
- purslane, common
- quackgrass
- radish, wild
- rocket, london
- rye, volunteer
- ryegrass, italian
- ryegrass, perennial
- shepherd's-purse
- smartweed, pale
- sorrel, red
- tomato, volunteer
- velvetgrass
- volunteer wheat
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Kerb 50-W 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 CA, ID, NV, OR, UT, 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.
Kerb 50-W FAQ
What weeds does Kerb 50-W control?
The Kerb 50-W label names 51 weeds, including foxtail barley, barley, common barnyardgrass, bentgrass, annual bluegrass, and bulbous bluegrass. Control varies by crop, rate, and timing.
What crops is Kerb 50-W labeled for?
Kerb 50-W is labeled for 3 crops and uses, including alfalfa, clover, and field pea.
What is the active ingredient in Kerb 50-W? Is it a generic?
Kerb 50-W's active ingredient is propyzamide (MOA Group 23). 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 Kerb 50-W?
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 Kerb 50-W?
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 Kerb 50-W and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
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Sources
Last updated 2026-07-14.