Journal of Entomological Research

SCOPUSWeb of Science
  • Year: 2017
  • Volume: 41
  • Issue: 4

Field evaluation of bio-pesticides and insecticides against sucking insect pests of Bt-cotton under rainfed condition

1AICRP on Forage Crops, V.C. Farm Mandya, UAS, Bengaluru-560 065, Karnataka, India

2AICRP on Sorghum, KVK, Chamarajanagara, UAS, Bengaluru-560 065, Karnataka, India

All India Coordinated Research Project on Cotton, Krishi Vigyan Kendra, Chamarajanagar, University of Agricultural Sciences, Bengaluru-560 065, Karnataka, India

*Corresponding author's E-mail: ambi.s.gowda@gmail.com

Online published on 9 January, 2018.

Abstract

A field experiment was conducted with 4 insecticides, 2 bio-pesticides and 1 botonical (NSKE) along with control, at different dosages. Four sprays were undertaken at 30, 60, 90 and 120 days after sowing of Bt-cotton using manually hand operated knapsack sprayer. Results indicated that application of flonicamid 50 WG @ 100 g ai/ha recorded lower number of thrips per leaf (0.9), Leaf hopper (1.0) and white flies (1.8), while untreated control recorded higher number of thrips (4.5), leaf hopper (6.2) and whiteflies (31.0)per leaf

Keywords

Cotton, pesticides, sucking pests