1Department of Entomology, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad - 500 030, Telangana, India
College of Horticulture, Sri Konda Laxman Telangana State Horticultural University, Mojerla, Wanaparthy - 509 382, Telangana, India
*Corresponding authors’ E-mail : shahanaz_ento@yahoo.co.in
Online Published on 06 December, 2023.
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.
Indoxacarb, Insecticides, LC50, Relative toxicity, Spinosad, Trichogramma
