Registered until
Registration number
Active materials

CHISUM is recommerided for use on land primarily dedicated to the production of pasture, rangeland, or established grasses in the Conservation Reserve Program (CRP). This product may also be used on selected uncultivated areas (fence rows, farmyards, and rights-of-way) directly adjacent to, or which transect or pass through, treated pastures, rangeland, or CRP, where grazing or harvesting for animal feed of those uncultivated areas may occur. CHISUM is a dispersible granule that controls or suppresses broad leaf weeds and brush in pasture, rangeland and CRP. CHISUM is mixed in water or can be preslurried in water and added to liquid nitrogen carrier solutions and applied as a uniform broadcast spray. A spray adjuvant must be used in the spray mix unless otherwise specified on this label. CHISUM is a broad-spectrum herbicide recommended for use on pastures, rangeland or CRP in most states. Check with your state extension or Department of Agriculture before use to be certain CHISUM is registered in your state. Do not use CHISUM in the following counties of Colorado: Alamosa, Conejos,Costilla, Rio Grande, and Saquache.
CHISUM controls weeds by preemergence and postemergence activity. For best results, apply
CHISUM to young, actively growing weeds. Weeds hardened off by cold weather or drought stress may not be controlled. The use rate depends upon the weed spectrum and size of weeds at application. The degree and duration of control may depend on the following factors:
• weed spectrum and infestation intensity
• weed size at application
• environmental conditions at and following treatment
It is permissible to apply CHISUM to floodplains where surface water is not present, terrestrial areas of deltas, and low lying areas where water is drained but may be isolated in pockets due to uneven or unlevel conditions.


Registered for cultures
Spring barley
Winter barley