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Evalution of Methyl Parathion·Phoxim EC on Laboratory Toxicity of Hcliothis armigera

SHAN Wen-rong et al (Hebei University of Engineering,Handan,Hebei 056038)  
[Objective]The purpose of this research was to evaluate laboratory toxicity of Hcliothis armigera under the effect of methyl parathion·phoxim EC.[Method]The topical application method was used to determine contact toxicity of 50% methyl parathion,40% phoxim and 26% methyl parathion·phoxim EC on Hcliothis armigera.[Result]The results indicated that 26% methyl parathion·phoxim EC had stronger contact toxicity than other two singles,LC50 was 115.38 mg/kg,and CTC was 198.27.[Conclusion]This research will provide the theoretical reference for efficient utilization of methyl parathion·phoxim EC.
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