Italian rvegrass control in winter wheat

摘要

Two studies were established in 'Mel' imidazolinone-tolerant winter wheat planted on October 8, 2005 near Moscow, Idaho to evaluate ACCase-resistant Italian ryegrass and wheat response with fiufenacet/metribuzin combined with mesosulfuron, and pinoxaden combined with broadleaf herbicides. Studies were arranged hi a randomized complete block design with four replications and included an untreated check. AH herbicide treatments were applied using a CO_2 pressurized backpack sprayer calibrated to deliver 10 gpa at 32 psi and 3 mph (Table I). To control broadleaf weeds, the flufenacet/metribuzin study was oversprayed with thifensulfuron/tribenuron at 0.0156 lb ai/A on May 16, 2006. Wheat response and Italian ryegrass control was evaluated visually. Wheat seed was harvested with a small plot combine on August 9, 2006.