Journal of Entomological Research

SCOPUSWeb of Science
  • Year: 2017
  • Volume: 41
  • Issue: 1

Impact of various insecticides on natural enemies in cowpea ecosystem

  • Author:
  • Gopi Ram Yadav1, Poonam Srivastava1, Vijay Kumar Mishra, Deepika Chauhan1, Rajveer 1
  • Total Page Count: 6
  • Page Number: 57 to 62

1Department of Entomology, College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar-263145, Uttarakhand, India

Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India

Abstract

Studies on the impact of various insecticides on natural enemies in cowpea crop revealed that all the insecticides caused harmful effect on the population of coccinellid beetles and spiders. Bio-rationals, Bacillus thuringiensis var. kurstaki and azadirachtin were found comparatively safe. The population of coccinellid beetles gradually decreased in all treatments whereas untreated check recorded significantly more number of beetles/plant/plot while the population of spiders gradually increased in all treatments.

Keywords

Insecticides, cowpea crop, ecosystem, coccinellid, spider