ABSTRACT

Bollworm (Heliverpa zea) moths were collected from twenty six sites throughout five mid-atlantic states including Virginia, Maryland, Delaware, Pennsylvania and New Jersey and evaluated for resistance to the pyrethroid insecticide, cypermethrin. One third of the sites evaluated had moths that survived the 10 µg cypermethrin/vial rate. Two thirds of the sites evaluated had moths that survived the and 5 µg cypermethrin/vial rate.