Vol. 12, Special Issue 8 (2023)

Author(s):
Rajkumari, RN Ganguli, Jayalaxmi Ganguli and Savitri

Abstract:
The current investigations were conducted between 2021 and 2023 in the Biological Control laboratory, Department of Entomology, College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya (IGKV), Raipur, Chhattisgarh. Studies on the egg laying preference and emergence pattern of Trichogramma chilonis on different coloured sentinel cards under laboratory conditions revealed that the species revealed varied behavioural pattern of egg laying (parasitization) and emergence on the three distinct colour cards examined under multiple-choice conditions: yellow, pink, and blue. The overall mean parasitization percentage of T. chilonis during the entire experimental period was found highest on yellow card i.e., 80.07% and most preferred card for adult emergence was pink cards with 184.4%. Thus, it can be concluded that T. chilonis preferred yellow cards for maximum parasitization and pink cards for maximum adult emergence.