Pheromone trap data from our cooperators across Virginia are in this Table. Virginia Cooperative Extension Agents Hélène Doughty (Northampton County) and Scott Reiter (Prince George County) reported many corn earworm larvae in soybean fields this week. Scott’s black light trap averaged 9.3 moths per night. With his help, our entomology program put in an insecticide efficacy experiment in Prince George soybean on August 20. The economic threshold calculator for corn earworm larvae in soybean can be found here. Our cypermethrin adult vial tests show 46% dead or down moths after 24 hours exposure time to this pyrethroid insecticide (n = 594 moths tested this season).
