Corn earworm (bollworm) pyrethroid resistance monitoring update: Aug. 4, 2016

With the assistance of Johnny Parker and two growers near the town of Franklin, VA, in the past week our Entomology crew was able to capture (via pheromone traps) and test 312 corn earworm (bollworm) moths in our adult vial tests.  41.4% of moths from Franklin survived the 24-hour exposure to the pyrethroid insecticide, cypermethrin.  These results are similar to what we are seeing in Suffolk, with a seasonal average of 39.7% of moths surviving the vial test (42.9% surviving in the last week alone).  The following line graph shows the Suffolk results in more detail. AVT_4_Aug_16