Record of Epilachna, leaf hopper, aphid and mealy bug population in different cultivars of brinjal

Abstract

A field experiment was conducted during late Kharif, 2015-2016 at insectary, Department of Entomology, S.V. Agricultural College, Tirupati to record the population of Epilachna, Leaf hopper, Aphid and Mealy bug in eleven commonly grown cultivars of brinjal i.e, 6varieties and 5 hybrids. Relatively higher mean numbers of Epilachna beetle were seen in Arka Neelakanth, Arka Kusumakar, Jyothi, Shyamala and the damage was almost fluctuated throughout the crop. The maximum number of leafhoppers appeared on cultivars was 2-3 per leaf. The mean number of leafhoppers per leaf recorded in 11 brinjal cultivars were statistically insignificant from one another. It ranged from 1.06 to 1.49 per leaf. This may be considered as moderate incidence. Throughout the crop period, the leafhoppers, incidence was almost uniform. The mean number of aphids per leaf in 11 brinjal cultivars were in the range of 8.86 to 23.90. The highest was in Ranjitha hybrid at 100 DAT. Initial mealy bug mean population at 50 DAT ranged from 7.11 to 14.22 per plant. Except Arka Nidhi, comparatively other four Arka varieties were less preferred by mealy bug (11/plant). Hybrids had 12.37 to 14.26 per plant, being PHB-909 as highly preferred line. The mean number of aphids per leaf in 11 brinjal cultivars were in the range of 8.86 to 23.90. The highest was in Ranjitha hybrid at 100DAT.