Evaluation of oat tolerance to herbicides

摘要

Plots were established at the Northeast South Dakota ResearchFarm near Watertown, South Dakota in 2003. The site had a Kranzburg silt loam soil with 3.0% organicmatter and a pH of 6.1. The seedbed was prepared in soybean stubble using a fall chisel operation and afield cultivator prior to planting. Loyal oat was seeded May 12, 2003 using 100 lb/A seed with a press drillhaving 6 inch row spacings. Herbicide treatments were arranged in a randomized complete block designwith four replications of plots 10 x 50 feet. Postemergence treatments were applied with a bicycle plotsprayer using compressed air equipped with 8002 flat fan nozzles spaced 20 inches set at 40 psi todeliver 20 gpa. Plots were visually evaluated for crop response. Yields were determined by harvesting a5 by 45 foot area from the center of each plot using a plot combine. Application information and weatherdata are presented below.