Seasonal incidence of maize aphids and it’s correlation with weather parameters

Abstract

Studies were carried out on seasonal incidence of aphids of maize at the Department of Agricultural Entomology, College of Agriculture, Parbhani during Rabi 2018.Experiment was laid out in unprotected condition with net plot size 10 x 10 m2 in non-replicated and divided in four quadrants. Five plants or 1 m row was randomly selected from each quadrant for recording aphids observations. The population of aphid ranged between 0 – 48.9 per three leaf respectively and first appearance was noticed in 1st SMW whereas reached at its peak at 3rd SMW (15-21 JAN) i.e. 48.9 aphids/3leaf. The analysis brought out correlation with weather parameters of aphid showed non-significant negative correlation with maximum temperature and minimum temperature while morning relative humidity and evening relative humidity showed significant positive correlation with aphid.