Control of Stink Bugs on Georgia Soybeans, 1994

The efficacy of 5 selected insecticides for control of stink bugs, velvetbean caterpillars, and soybean loopers was evaluated at the University of Georgia Attapulgus Research Center, Attapulgus, GA. The insecticides were foliarapplied on 30 Aug on ‘Essex’ soybeans planted in late May. Individual plots were 4 rows wide × 50 ft long with alleys 6 ft wide on each end and 2 border rows on each side, arranged in a RCBD with 4 replications. Each spray concentrate was applied with a CO2-powered backpack sprayer with 4, TX-12 nozzles on a 6 ft boom (2 nozzles per row) at 40 psi that delivered 17.6 gal/acre. Each plot was sampled prior to treatment and on 3, 7, and 14 DAT, by taking a 20-sweep sample (15-inch diam net) from a single row. Soybeans were in the R5 growth stage (pods filling with seeds) during the testing period. The data were subjected to ANOVA and Duncan’s multiple range test.