Abstract:

To study the resistance status of aphid from the Manas River, the resistance of Aphis gossypii collected from five locations of Manas River Basin, including 122 farm, 143 farm, 145 farm,147 farm, Xinhu farm to imidacloprid, pymetrozine, abamectin, beta-cypermethrin, lambda-cyhalothrin were determined for the dipping method recommended by FAO. The results indicated that the resistance of aphid populations from the Manas River basin to beta-cypermethrin was 4.54-9.04 fold, to lambda-cyhalothrin was 8.56-9.07 fold, to imidacloprid was 2.32~3.6 fold, to pymetrozine was1.37-1.57 fold, to abamectin was 1.12-1.31.The use of pyrethroid pesticides to control aphid may accelerate the development of resistance.