Effectiveness of Gaucho 480 Fs in Preventing Seed Predation by Rifa in Corn, Soybean, Sorghum, Peanut, and Sunflower, 1995

Abstract

Seed of corn, soybean, sorghum, peanut, and sunflower were treated with Gaucho 480 at 8 oz (AI)/acre Gaucho per cwt of seed. Test plots were located in a RIFA-infested field in Harrison County, MS, that averaged 46.6 monogynous RIFA colonies per acre. Seed beds 5 ft X 12.5 ft were prepared by multiple disking with a farm tractor. Treated seed of each crop, along with corresponding untreated controls, were planted in a CRD with 5 replicates per crop on Jun 5. Each replicate consisted of 25 seeds which were manually planted at 6-inch spacings in a 0.5 inch deep furrow in each seed bed. Percent seed germination within each test plot was determined when seedlings were at the 4 to 6 true leaf stage. Wet weight standing biomass of each plant at the 4 to 6 true leaf stage was determined by severing the plant at the soil line, and then weighing the above-ground portion of each plant. Treatment means for each crop were statistically analyzed by a t-test.