F85

The experiment was designed as a RCB with 4 treatments and 4 replications. Plot size was 20 ft by 4 rows (30 inches between rows). Soybeans were drill-planted 27 May and irrigated as needed. Recommended herbicides were applied preplant. No nitrogen fertilizer was applied, but seed was inoculated with bacteria to promote nodulation. In mid-Sep, Lepidoptera pest populations were observed to be increasing. Thus, treatments were applied 15 Sep using a 2-nozzle hand-held spray rig (no. 2 cone nozzles on 30 inch centers, 20 gpa final spray volume). Soybeans were R6 at this time. Plots were sampled for insects at 1, 5 and 8 DAT with a 15-inch diameter sweep net. Ten consecutive sweeps were taken in each plot on each sample date. The contents of each 10-sweep sample were placed in a plastic bag and frozen for later inspection and enumeration. Insect counts were transformed using square root of (X +1/2). Data were analyzed by ANOVA and means separated by LSD.