Herbicide label
Regiment CA Herbicide Label
Regiment CA (EPA 59639-105) is a Group 2 bispyribac herbicide labeled for 1 crops. The label lists 9 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Regiment® CA Herbicide is a selective, postemergence contact herbicide which provides control of many weeds infesting rice.”
Regiment CA label facts
- Product Regiment CA
- EPA Reg. No. 59639-105
- Registrant Valent U. S. A. LLC
- Active ingredient bispyribac
- MOA group 2
Crops on the Regiment CA label
Regiment CA is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Regiment CA label
The Regiment CA label names 12 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 control9- arrowhead, California
- arrowhead, Gregg's
- barnyardgrass, common
- ducksalad
- monochoria
- watergrass
- watergrass, resistant biotypes
- waterhyssop
- waterplantain
Suppression
suppression3- bulrush, ricefield
- ammannia, purple
- umbrellaplant, smallflower
Regiment CA 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.
Regiment CA FAQ
What weeds does Regiment CA control?
The Regiment CA label names 12 weeds, including california arrowhead, gregg's arrowhead, common barnyardgrass, ducksalad, monochoria, and watergrass. Control varies by crop, rate, and timing.
What crops is Regiment CA labeled for?
Regiment CA is labeled for 1 crops and uses, including rice.
What is the active ingredient in Regiment CA? Is it a generic?
Regiment CA's active ingredient is bispyribac (MOA Group 2). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-17.