Abstract
Abstract The efficacy of 9 selected insecticides for control of velvetbean caterpillars, stink bugs and grasshoppers was evaluated at the University of Georgia Coastal Plain Experiment Station, Tifton, GA. The insecticides were foliar-applied on 23 Aug on ‘Thomas’ soybeans planted in early Jun. 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, 14 and 21 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. At 28 DAT, the percent defoliation was visually estimated for all plots. The data were subjected to ANOVA and Duncan’s multiple range test.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
