Vol. 10, Special Issue 11 (2021)

Author(s):
Ajay Gupta, Dr. Gajendra Chandrakar, Ashithosh Mohanan and Rajkumari Sidar

Abstract:
A field experiment was carried out during Kharif 2020-21 at research cum instructional farm, Department of Horticulture, College of Agriculture, Raipur (C.G.) to study the seasonal incidence and impact of weather parameters on population dynamics of brinjal shoot and fruit borer (Leucinodes orbonalis Guenee). The activity of brinjal shoot and fruit borer was observed throughout the crop growth period. The infestation of Leucinodes orbonalis on developing shoots was first observed during fourth week after transplanting (32^nd SMW) and reached its peak activity (9.92% shoot damage) during first week of October (40^th SMW). However, the maximum fruit damage (50.2%) caused by Leucinodes orbonalis was observed during fourth week of October (43^rd SMW). Correlation studies revealed that brinjal shoot borer showed positively significant correlation with minimum temperature, morning and evening relative humidity. While, brinjal fruit borer showed negatively significant correlation with minimum temperature, rainfall, morning and evening relative humidity and wind velocity while, showed positively significant correlation with sunshine hours.