Abstract:

The toxicity bioassay of 11 common acaricides to the adult females of carmine spider mites, Tetranychus cinnabarinus, in vegetables in Beijing area was carried out using slide-dip method in the laboratory. The results showed that abamectin had the highest toxicity with the LC50 value of 0.0007mg/L. Emamectin benzoate and Oxymatrine?Prosuler also showed higher toxicity to the mites, with the LC50 of 0.0130mg/L and 0.1461mg/L, respectively. Chlorantraniliprole, Pyridaben and Chlorfenapyr exhibited a little of lower toxicity, having the LC50 of 21.3122mg/L and 34.8519mg/L, respectively. The other acaricides had low toxicity, and Envidor, Chlorantraniliprole and Hexythiazox showed the lowest toxicity to the adult females of spider mites.