A Controlling Effectiveness Experiment of Mixed Pesticides Application on Diamondback Moth (Plutella xylostella)

Diamondback moth(Plutella xylostella L) is one of the major insects for cruciferous vegetables,easily developing resistance to single chemical.Study on the control effects of four single chemicals(1.8%AiFuDing Ec,2.5% Cyhalothrin EW,10%Chlorfenapyr SC and 15% Indoxacarb SC) and which combined of two against diamondback moth respectively.The results showed that 10% Chlorfenapyr SC had the best effect in four single chemicals,and 10% Chlorfenapyr SC combined 15% Indoxacarb SC had the best effect in mixture chemicals.