Vol. 11, Special Issue 11 (2022)

Author(s):
KP Jivrag, BV Patil, SG Pavhane, JL Savalkar and NB Wadhekar

Abstract:
A field experiment was conducted to study the Seasonal incidence of citrus blackfly, citrus whitefly and their natural enemy during Mrig bahar 2020. The study revealed that the populations of Citrus blackfly, whitefly, ladybird beetle and Chrysoperla carnea varied from 15.6 to 26.2 blackfly/ twig, 0.2 to 3 whiteflies/ twig, 0.0 to 1.6 LBB/ twig and 0.0 to 1.2 Chrysopa/ twig respectively. The peak incidence of blackfly (26.2 blackfly/ twig) observed on 41^th SMW and 44^th SMW, whitefly (3 whitefly/twig) observed on 48^th SMW and their natural enemies ladybird beetle (1.6 LBB/ twig) observed on 44^th SMW and Chrysoperla carnea (1.2 Chrysopa/ twig) were observed on 44^th SMW and 47^th SMW. The correlation study revealed that maximum temperature positively correlated with blackfly, whitefly and both predators, while minimum temperature positively correlated with predators but, negatively correlated with both pests. Morning relative humidity and evening relative humidity negatively correlated with both pests and predators, while rainfall positively correlated with predators and negatively correlated with both fly.