Control of the Stink Bug Complex on Georgia Soybeans, 1994

The efficacy of 5 selected insecticides for control of stink bugs and velvetbean caterpillars was evaluated at the University of Georgia Attapulgus Research Center, Attapulgus, GA. The insecticides were foliar-applied on 25 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 4, 7, 14 and 19 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.