Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2023
  • Volume: 85
  • Issue: 1

Evaluation of insecticides against lepidopteran pests of okra

  • Author:
  • M M Patel, R K Sharma, J R Patel1, Manishkumar J Joshi2,*
  • Total Page Count: 4
  • Published Online: May 17, 2023
  • Page Number: 245 to 248

1Polytechnic in Agriculture, S D Agricultural University, Khedbrahma, 383275, Gujarat, India

2Department of Agricultural Entomology, S D Agricultural University, Sardarkrushinagar, 385506, Gujarat, India

Agricultural Research Station, S D Agricultural University, Ladol, 382840, Gujarat, India

*Email: mj1107006@gmail.com (corresponding author)

Online Published on 17 May, 2023.

Abstract

Field experiment for the evaluation of insecticides was conducted at the Agricultural Research Station, S D Agricultural University, Ladol during kharif 2018-2020. Results revealed that least fruit damage caused by Earias vitella F (9.84%) and Helicoverpa armigera Hübner (12.86%) was observed with emamectin benzoate 5SG at 0.0025%. Emamectin benzoate 5SG at 0.0025% gave maximum fruit yield and incremental cost benefit ratio. The pesticide residue analysis with emamectin benzoate 5SG at 0.0025% showed that the residues were below limit at 5 days after the spray. Also, only below MRL residue (0.223 ppm) of spinosad 45SC at 0.0169% was observed.

Keywords

Okra, Pests, Helicoverpa armigera, Earias vitelli, Emamectin benzoate, Spinosad, Yield, Pesticide residue analysis, MRL, Yield, Cost benefits