Journal of Entomological Research

SCOPUSWeb of Science
  • Year: 2023
  • Volume: 47
  • Issue: 4

Relative toxicity of commonly used insecticides against egg parasitoid, Trichogramma chilonis Ishii

College of Horticulture, Sri Konda Laxman Telangana State Horticultural University, Mojerla, Wanaparthy - 509 382, Telangana, India

1Department of Entomology, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad - 500 030, Telangana, India

Abstract

Relative toxicity of four commonly used insecticides viz., indoxacarb, thiodicarb and spinosad was determined by using filter paper impregnation method against Trichogramma chilonis Ishii. Based on the bioassay studies conducted, spinosad was found to be highly toxic to both T. chilonis adults and also to the eggs parasitized by them with least LC50 and LC90 values. The order of toxicity was spinosad > indoxacarb > thiodicarb. Spinosad was 750 folds and 1834.86 folds more toxic than thiodicarb to the adults and parasitized eggs, respectively.

Keywords

Indoxacarb, Insecticides, LC50, Relative toxicity, Spinosad, Trichogramma