Herbicide label
Kerb 50-W Herbicide Label
Kerb 50-W (EPA 62719-397) is a Group 23 propyzamide herbicide labeled for 3 crops. The label lists 23 controlled weeds, plus partial-control, suppression, and partner-control categories.
“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.
Weeds on the Kerb 50-W label
The Kerb 50-W label names 23 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 control23- foxtail barley
- bluegrass, annual
- bluegrass, kentucky
- chickweed
- grain, volunteer
- mustard, wild
- orchardgrass
- quackgrass
- radish, wild
- rocket, london
- ryegrass, perennial
- shepherd's-purse
- sorrel, red
- barley
- chickweed, common
- chickweed, mouseear
- henbit
- oat, volunteer
- volunteer wheat
- brome, downy
- wild oats
- ryegrass, italian
- dodder
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 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.
Kerb 50-W FAQ
What weeds does Kerb 50-W control?
The Kerb 50-W label names 23 weeds, including foxtail barley, annual bluegrass, kentucky bluegrass, chickweed, volunteer grain, and wild mustard. 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.
Sources
Last updated 2026-09-30.