Field Efficacy of Selected Insecticides against Empoasca terminalis (Homoptera: Cicadellidae) on Soybean

摘要

Empoasca (Distantasca) terminalis Distant is a newly emerging soybean pest inudSouth Sulawesi, Indonesia, causing severe hopperburn and substantial yield loss to theudcrop. The main purpose of the study was to determine the efficacy of four commercialudinsecticide formulations in suppressing the leafhopper population and protecting plant fromudhopperburn injury and yield loss. The results showed that all insecticide treatmentsudsignificantly reduced the leafhopper population and hopperburn rate and substantiallyudincreased yield on the treated plants compared to the untreated ones. Lambda cyhalothrinudand deltamethrin were the most effective among the treatments with the lowest numbers ofudleafhoppers per eight leaves and the lowest plant injury rate. The highest yield was alsoudobtained from the plants treated with -cyhalothrin and deltamethrin.