Synergies of Biological Pesticides for Controlling Liriomyza huidobrensis

During the pests happened heavily, field toxicity were experimented to control the larvae of Liriomyza huidobrensis Blanchard with abamectin, veratridine, matrine, pyrethrum+matrine, azadirachtin, chlorpyrifos and imidacloprid. The results showed that azadirachtin 0.3% EC, veratridine 0.5% EC can control L. huidobrensis better than other pesticides. Experiments showed that azadirachtin 0.3% EC with 270 mg/L palmityl alcohol EC given best control effect to inhibit hatching, egg hatchability was 13.45%. The oviposition deterrent effect of palmityl alcohol 27% EC on the adult was significant, and the oviposition amount of adult decreased 72.40% with 135 mg/L 4 d after application. Palmityl alcohol EC had good effect for antifeedant, 4 d after application the adult antifeedant rate was 70.2%. The amount of adult decreased 30.50% using the 150 mg/L, azadirachtin 0.3% EC 5 d after application.