Effect of Insecticides on Sucking Pests and Arthropod Predators in Rainfed Bt Cotton


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Authors

  • H. MEGHANA M. Sc. (Agri.) Scholar, Department of Agricultural Entomology, College of Agriculture, Vijayapur-584 101, Karnataka
  • S. B. JAGGINAVAR Professor, Department of Agricultural Entomology, College of Agriculture, Vijayapur-584 101, Karnataka
  • N. D. SUNITHA Associate Professor, Department of Agricultural Entomology, College of Agriculture, Vijayapur-584 101, Karnataka

Keywords:

Bt. Cotton, Sucking Pests, Mirids, Predators

Abstract

A study was conducted to know the bioefficacy of different insecticides on sucking pests of Bt cotton under rainfed situation at College of Agriculture, Vijayapur. Flonicamid 50 WG was highly effective in minimizing thrips followed by Fipronil 5 SC. Biopesticide Lecanicilium lacanii recorded minimum thrips population. Similar effect was there also on aphids and leafhoppers. Thiamethoxam 25 WG was observed as safest insecticide followed by Diafenthiuron 50WP, Fipronil 5SC and Acetamiprid 20 SP to the lady bird beetles and green lace wings, however Diafenthiuron 50WP was safer to spidrs followed by Thiamethoxam 25 WG, Fipronil 5SC and Acetamiprid 20 SP. Significantly highest seed cotton yield was harvested from Flonicamid 50 WG treatment (25.13 q/ha) followed by Fipronil 5 SC (23.95 q/ha), Dinotefuran 20 SG (23.36 q/ha) and Acetamiprid 20 SP (23.05 q/ha) and these are at par with each other. L. lecanii treatment yielded 15.52 q/ha. Cost economics of different treatments revealed that among the chemical treatments, highest benefit cost ratio was obtained in Fipronil 5 SC followed by Acetamiprid 20 SP and Flonicamid 50 WG.

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Submitted

2021-08-16

Published

2021-08-16

How to Cite

MEGHANA, H., JAGGINAVAR, S. B., & SUNITHA, N. D. (2021). Effect of Insecticides on Sucking Pests and Arthropod Predators in Rainfed Bt Cotton. Cotton Research Journal, 10(1). Retrieved from https://epubs.icar.org.in/index.php/CoRJ/article/view/114033

Issue

Vol. 10 No. 1 (2019): Vol 10 Issue 1

Section

Articles

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Copyright in respect of material published in the journal vests with ISCI. Requests for permission to reproduce matter/figures, etc. from the printed articles should be addressed to Chief Editor, Editorial Board, Indian Society for Cotton Improvement. However, the authors are free to reproduce part or whole of the papers, including data and figures, in their teaching notes, books etc.