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2020•Journal of Entomology and Zoology StudiesOpen access

Bio efficacy of different novel insecticides against aphid, A. gossypii in transgenic cotton

Ramalakshmi, Lipsa Dash, Deepayan Padhy

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Abstract

Field efficacy of some new insecticides were assessed against cotton aphid, A. gossypii during kharif 2011-12 at Regional Agricultural Research Station, Lam, Guntur. Bt cotton hybrid RCH-2 was selected for this experiment. A total of 9 insecticides were tried against the aphid population. Out of all the insecticides tried after three sprays, imidacloprid 70%WG showed the best result with 69.4% mortality followed by diafenthiuron 50%WP and fipronil 80%WG with 66.2% 60.1% mortality respectively and buprofezin 25%SC worked least with 44.7% mortality. However out of all the insecticides treated plots, fipronil 5% SC treated plot gave highest yield with 13.5q/ha followed by fipronil 80%WG with 13.4q/ha and diafenthiuron 50%WP 12.7q/ha.

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What this paper is about

Field efficacy of some new insecticides were assessed against cotton aphid, A. gossypii during kharif 2011-12 at Regional Agricultural Research Station, Lam, Guntur. Bt cotton hybrid RCH-2 was selected for this experiment. A total of 9 insecticides were tried against the aphid population. Out of all the insecticides tried after three sprays, imidacloprid 70%WG showed the best result with 69.4% mortality followed by diafenthiuron 50%WP and fipronil 80%WG with 66.2% 60.1% mortality respectively and buprofezin 25%SC worked least with 44.7% mortality. However out of all the insecticides treated plots, fipronil 5% SC treated plot gave highest yield with 13.5q/ha followed by fipronil 80%WG with 13.4q/ha and diafenthiuron 50%WP 12.7q/ha.

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Available abstract

Field efficacy of some new insecticides were assessed against cotton aphid, A. gossypii during kharif 2011-12 at Regional Agricultural Research Station, Lam, Guntur. Bt cotton hybrid RCH-2 was selected for this experiment. A total of 9 insecticides were tried against the aphid population. Out of all the insecticides tried after three sprays, imidacloprid 70%WG showed the best result with 69.4% mortality followed by diafenthiuron 50%WP and fipronil 80%WG with 66.2% 60.1% mortality respectively and buprofezin 25%SC worked least with 44.7% mortality. However out of all the insecticides treated plots, fipronil 5% SC treated plot gave highest yield with 13.5q/ha followed by fipronil 80%WG with 13.4q/ha and diafenthiuron 50%WP 12.7q/ha.

Key concepts: Fipronil, Kharif crop, Aphid, Imidacloprid, Aphis gossypii, Bt cotton, Biology, Toxicology

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