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2003•Tianjin Agricultural SciencesRequires access

Comparative Toxicity of Two Pesticides Against the Susceptible Cotton Bollworm

Wei Zhang

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Abstract

The responses to toxicity of the beta-cypermethrin4.5EC and th e parathion-methyl·phox-im-methyl·beta-cypermethrin40EC were compared by bioassay method on the susceptible of cotton bollworm Helicoverpa armigera.The results showed that the values of LC 50 of two pesticides were18.5643and11.6494mg/kg,the contrastive value of LC 50 of two pesticides was1.594,which agreed with that the former was remar kly best to the later in the toxicity of the susceptible cotton bollworm.

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What this paper is about

The responses to toxicity of the beta-cypermethrin4.5EC and th e parathion-methyl·phox-im-methyl·beta-cypermethrin40EC were compared by bioassay method on the susceptible of cotton bollworm Helicoverpa armigera.The results showed that the values of LC 50 of two pesticides were18.5643and11.6494mg/kg,the contrastive value of LC 50 of two pesticides was1.594,which agreed with that the former was remar kly best to the later in the toxicity of the susceptible cotton bollworm.

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Available abstract

The responses to toxicity of the beta-cypermethrin4.5EC and th e parathion-methyl·phox-im-methyl·beta-cypermethrin40EC were compared by bioassay method on the susceptible of cotton bollworm Helicoverpa armigera.The results showed that the values of LC 50 of two pesticides were18.5643and11.6494mg/kg,the contrastive value of LC 50 of two pesticides was1.594,which agreed with that the former was remar kly best to the later in the toxicity of the susceptible cotton bollworm.

Key concepts: Helicoverpa armigera, Parathion methyl, Pesticide, Bioassay, Toxicity, Toxicology, Bollworm, Biology

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