Vial and Diet Bioassays to Determine Resistance Levels in Tarnished Plant Bugs

Two laboratory bioassays were used to test field populations of the tarnished plant bug for development of resistance to common insecticides in the Mississippi Delta.  Field populations fro 7 locations in the mid-South were tested in 2016.  The LC50 values were calculated for acephate, permethrin, imidacloprid, thiamethoxam, and sulfoxaflor for vial and diet assay methods.  Results were compared between assays for each chemical among feral populations and a laboratory control.