Synergistic effect and efficacy of compositon of meperfluthrin and acetamiprid on Culex pipienspallens
[Aims]The synergistic effect and control efficacy of compositons of meperfluthrin and acetamiprid on Culex pipienspallens were studied.[Methods]The bioactivity and synergistic effect of meperfluthrin and acetamiprid to C.pipienspallens was determined in laboratory,and the control efficacy was tested.[Results]When the ratio between meperfluthrin and acetamiprid was 1∶4,1∶5,1∶6 and 1∶7,all compositions showed synergistic effect,and the optimal ratio was 1∶5 with the co-toxicity cocfficient(CTC)reaching 146.25.The efficacy test showed that the mortality rate of meperfluthrin and acetamiprid(1∶5)against C.pipienspallens was up to 100.00％,which was significantly improved compared witn the control agents.[Conclusions]The composition of meperfluthrin and acetamiprid has obvious synergistic effect and better efficacy.
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