Helicoverpa zea (corn earworm/bollworm) adult vial test update for Sep. 24, 2015

We’re not catching many moths in our pheromone traps this time of year, but we are still conducting the adult vial tests on those that we do catch.  We are currently seeing many more dead moths after 24 hours of exposure to the pyrethroid insecticide, cypermethrin, at the 5 microgram per vial rate.  Less than 20% as you can see in the line graph below.  For the season, the average survival rate is 33.4% (bar chart, below).

CEW_AVT_24_Sep_2015_aCEW_AVT_24_Sep_2015_b