2020 Volume 62 Pages 21-25
Toxicities of 31 insecticides were investigated after dilution to conventional concentrations for tobacco flea beetle adults collected from an eggplant field in Nara prefecture. The results show that the most effective insecticides were acephate, (MEP), permethrin, etofenprox, bifenthrin, imidacloprid, acetamiprid, dinotefuran, clothianidin, sulfoxaflor, spinosad, chlorfenapyr, indoxacarb, metaflumizone, cyantraniliprole, and fluxametamide. In the eggplant field, five peaks of adult occurrence were observed, suggesting four generations of tobacco flea beetles per year. The finding that adult beetles were most frequently observed on bottom leaves suggests the possibility of control by removing lower leaves in conventional cultivation practices.
