Abstract:

The banana flower thrips Thrips hamaiiensis (Morgan) occurred commonly in the banana gardens and caused damage to banana production. In order to select more effective insecticides and guide insecticide application in field, Toxicities of 6 kinds of insecticides to adults and nymph of Thrips hamaiiensis were determined by residual film with filter paper method. The results showed that, after the treatment of 24 h, the LC50 of chlorpyrifos, imidacloprid, abamectin, emamectin benzoate, beta-cypermethrin, and Acetamiprid on adults was 0.57 mg/L , 0.86 mg/L, 0.98 mg/L, 1.57 mg/L, 1.66 mg/L, 13.48 mg/L, respectively, while on nymph was 0.57 mg/L, 0.81 mg/L, 1.03 mg/L, 1.79 mg/L, 1.96 mg/L, 33.45 mg/L, respectively. Therefore, chlorpyrifos, imidacloprid and abamectin of 6 kinds of insecticides on the Thrips hamaiiensis had a better control effect.