Abstract
No treatment with less than 1.5 lb/a atrazine provided commercially acceptable Palmer amaranth control. The best level of Palmer amaranth control was produced by treatments that had good preemergence control augmented by a postemergence application with two or more modes of action that contained 0.5 lb/a atrazine. All treatments provided excellent kochia control. The best Russian thistle treatments provided from 77 to 88% control. The best foxtail or crabgrass treatments provided from 91 to 94% control. Combinations of preemergence treatments followed by a postemergence treatment achieved excellent shattercane control.
Highlights
IntroductionRimsulfuron is a postemergence herbicide that has been used in corn for more than 25 years
The best level of Palmer amaranth control was produced by treatments that had good preemergence control augmented by a postemergence application with two or more modes of action that contained 0.5 lb/a atrazine
Combinations of preemergence treatments followed by a postemergence treatment achieved excellent shattercane control
Summary
Rimsulfuron is a postemergence herbicide that has been used in corn for more than 25 years. It has a limited degree of preemergence activity and provides excellent postemergence control of sorghum species weeds. It provides good control of several other grassy weeds, control is limited if they exceed certain size limits. Because rimsulfuron is inexpensive to manufacture, it adds a great deal of value to tank mixes of other herbicides. The objective of this study was to explore tank mix partners to augment rimsulfuron’s weed control
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