Indoor Toxicity Determination and Control Effect of 4 Kinds of Insecticides Against Aphrophora intermedia Nympha
In order to effectively control Aphrophora intermedia occurrence,the toxicity and efficacy analysis of 4 pesticides for con-trolling Aphrophora intermedia larvae were tested.The results of indoor toxicity tests indicated that toxicity value(LC50)of 10%Imi-dacloprid WP reached the maximum of 50.31 mg/L,which was a medium-risk agent.and the toxicity value(LC50)of 25g/L cyhalo-thrin EC had the minimum of 16.25 mg/L,indicating high toxicity.Results of field effectiveness tests showed that 25 g/L cyhalothrin EC of 1∶4 000 dilution possessed the best controlling effect with the corrected mortality as high as 94.11%within 24 hour.There-fore,25 g/L cyhalothrin EC could be used as an effectively control method during sudden outbreak of Aphrophora intermedia.
Aphrophora intermediatoxicity determinationpharmacodynamic test
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