Survey on insect pests of brinjal and their natural enemies in Haveri and Dharwad districts of Karnataka

K. S. MANOJ; R. VEERANNA; K. P. GUNDANNAVAR; P. BABU

doi:10.61475/JFS.2024.v37i4.05

K. S. MANOJ Department of Entomology, College of Agriculture, Hanumanamatti University of Agricultural Sciences, Dharwad - 580 005, India
R. VEERANNA Department of Entomology, College of Agriculture, Hanumanamatti University of Agricultural Sciences, Dharwad - 580 005, India
K. P. GUNDANNAVAR Department of Entomology, College of Agriculture, Hanumanamatti University of Agricultural Sciences, Dharwad - 580 005, India
P. BABU Department of Horticulture, College of Agriculture, Hanumanamatti University of Agricultural Sciences, Dharwad - 580 005, India

DOI: https://doi.org/10.61475/JFS.2024.v37i4.05

Keywords: Brinjal, Fruit borer, Insect pests, Natural enemies, Shoot, Survey

Abstract

The extensive roving survey was carried out at monthly intervals during rabi 2022-23 in Haveri and Dharwad districts of Karnataka to know the status of major insect pests and natural enemies occurring in brinjal crop. The results revealed an occurrence of six insect pest species and four natural enemies on brinjal crop. Among the insect pests, shoot and fruit borer, Leucinodes orbonalis Guenee; whitefly, Bemicia tabaci (Gennadius); leafhopper, Amarasca biguttula biguttula (Ishida) and aphid, Aphis gossypii Glover were found major insect pests that inflicted the significant damage to the crop. Among natural enemies, coccinellids (Coccinella transversalis F., Cheilomenes sexmaculata F. and Illeis cincta F.), green lacewing, Chrysoperla zastrowi sillemi and spider fauna (Neoscona theisi Walckenaer and Mecaphesa sp.) and were major predatory fauna and Hymenopteran parasitoids, Tarthala flavoorbitalis (Cameron) and Bracon sp were recorded on brinjal. Amongst the various stages examined, the reproductive stage exhibited the highest incidence of all sucking pests when compared to the vegetative stage and the Dharwad district exhibited a higher prevalence of insect pests (sucking pests and shoot and fruit borer) and predatory population compared to the Haveri district in both vegetative and reproductive stage of the crop.