Vol. 11, Issue 12 (2022)

Author(s):
Anjali Manhar, RN Ganguli, Jayalaxmi Ganguli and Rohit Kumar

Abstract:
The present investigation on colour preference for egg laying and emergence of Trichogramma japonicum was conducted at the Biocontrol laboratory, Department of Entomology, IGKV, Raipur (C.G.) during the year 2021-2022. The results revealed that Trichogramma spp. showed different behavioural pattern of egg laying on different colour cards viz., yellow, pink, blue and white under multi-choice conditions. Over all mean percent parasitization revealed that T. japonicum laid more number of eggs on pink card from December to April (mean 58.13), however, when the temperature was low (i.e., during December, January and February) yellow cards were preferred for egg laying and maximum adult emergence percentage was observed in yellow cards i.e., 152% where as white colour cards were recorded with minimum adult emergence, i.e., 104%.