SURVEY OF INSECTICIDE RESISTANCE AMONG NORTH-CAROLINA COLORADO POTATO BEETLE (COLEOPTERA, CHRYSOMELIDAE) POPULATIONS

Resistance to fenvalerate was most extensive in Leptinotarsa decemlineata populations from Carteret and Pamlico counties, with considerable levels of resistance also present in Pasquotank and Currituck counties. Azinphosmethyl resistance was most prominent in beetle populations from Carteret and Pasquotank counties, and carbofuran resistance was most extensive in Carteret, Currituck, and Pasquotank counties. Significant levels of variation exist in susceptibitility to these insecticides among counties, among fields within counties, and among beetle populations within fields. -from Authors