Tolerance of imidazolinone-resistant winter and spring wheat to imazamox plus MCPA ester combinations

摘要

Studies were established near Genesee, ID in imidazolinone-resistant winter and spring wheat to evaluate wheat response to imazamox plus MCPA ester combinations. Plots were 8 by 30 ft, arranged in a randomized complete block design with four replications, and included an untreated check. All herbicide treatments were applied using a CO_2 pressurized backpack sprayer calibrated to deliver 10 gpa at 32 psi and 3 mph (Table 1). The winter wheat study was oversprayed with bromoxynil/MCPA at 0.75 lb ai/Ato control broadleaf weeds. Wheat injury was evaluated visually. Wheat seed was harvested from the winter and spring wheat studies with a small plot combine on August 8 and 21, 2006, respectively.