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2012•Journal of Agricultural CatastrophologyRequires access

Study on Different Dosage of 45% Chlorphrifos EC on Control Effect of Chilo suppressalis Waleker

Shi Yang-juan

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Abstract

[Objective] The aim was to select the optimal dosage of 45% chlorphrifos EC on control effect of Chilo suppressalis Waleker.[Method] The 750、975、1 200 ml/hm2 dosage of 45% chlorphrifos EC were designed as treatments,and water was regarded as normal blank control.The harmfulness condition of rice was investigated,and the control effect was calculated.[Result] The results indicated that the control effect was good when the application dosage of 45% chlorphrifos EC was not less than 975 ml/hm2.[Conclusion] 45% chlorphrifos EC was a good bactericide for control of C.suppressalis Waleker,and its safe to rice and natural enemies.

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What this paper is about

[Objective] The aim was to select the optimal dosage of 45% chlorphrifos EC on control effect of Chilo suppressalis Waleker.[Method] The 750、975、1 200 ml/hm2 dosage of 45% chlorphrifos EC were designed as treatments,and water was regarded as normal blank control.The harmfulness condition of rice was investigated,and the control effect was calculated.[Result] The results indicated that the control effect was good when the application dosage of 45% chlorphrifos EC was not less than 975 ml/hm2.[Conclusion] 45% chlorphrifos EC was a good bactericide for control of C.suppressalis Waleker,and its safe to rice and natural enemies.

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Available abstract

[Objective] The aim was to select the optimal dosage of 45% chlorphrifos EC on control effect of Chilo suppressalis Waleker.[Method] The 750、975、1 200 ml/hm2 dosage of 45% chlorphrifos EC were designed as treatments,and water was regarded as normal blank control.The harmfulness condition of rice was investigated,and the control effect was calculated.[Result] The results indicated that the control effect was good when the application dosage of 45% chlorphrifos EC was not less than 975 ml/hm2.[Conclusion] 45% chlorphrifos EC was a good bactericide for control of C.suppressalis Waleker,and its safe to rice and natural enemies.

Key concepts: Chilo suppressalis, Toxicology, Chemistry, Biology, Botany, Larva

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