STUDIES ON THE LABORATORY DEVELOPMENT OF RESISTANCE AND CROSS-RESISTANCE OF COTTON BOLLWORM TO DELTAMETHRIN, CYHALOTHRIN AND A MIXTURE CONTAINED CYHALOTHRIN
Abstract:Systematic screenings were carried out under 70% selective pressure in labo-ratory for the resistant populations of cotton bollworm (CBM) Helicoverpa armigera (Hubner) separately to deltamethrin, cyhalothrin and Kaiming 2 (a mixture contained cyhalothrin