STUDIES ON SEASONAL INCIDENCE, BIOLOGY AND MANAGEMENT OF GALL MIDGE, Asphondylia capparis RUBSAAMEN (DIPTERA: CECIDOMYIIDAE) ON CAPSICUM
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Date
2019-08
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University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru).
Abstract
Studies on seasonal incidence, biology and management of gall midge, Asphondylia capparis Rubsaamen (Diptera: Cecidomyiidae) on capsicum were carried out during rabi 2018 at Horticulture Research and Extension Centre, Hogalagere, Srinivaspura (Tq.), Kolar (Dt.) of Karnataka. The incidence of gall midge was prevalent throughout the cropping season and severe damage on flowers and fruits were recorded during 1st Standard Meteorological Week (80 DAT). The gall midge damage on capsicum flowers and fruits recorded was 15 to 36 per cent and 12 to 30 per cent, respectively. During the course of investigation two gall formers and three natural enemies were recorded namelygall midge,Asphondyliacapparisand gall wasp,GoethellaasulcataGirault and natural enemies like Bracon sp. (larval parasitoid), Eurytoma sp. (larval-pupal parasitoid) and Psyllaephagus sp. (Encyrtid wasp). The study on biology of gall formers revealed that the total life cycle of A. capparis was 14.3 days and that of G. asulcata was 7.22 days.Among different insecticides evaluated, cyantraniliprole 10.26% OD @ 1.5 ml/l was found to be superior in controlling gall midge damage on both flowers and fruits, with lowest per cent damage of 2.55 and highest yield of 24.80 t/ha. The next best treatments were flubendiamide 39.35% SC @ 0.3 ml/l and chlorantraniliprole 18.5% SC @ 0.3 ml/l which recorded 5.52 and 6.57 per cent damage and yielded 21.49 t/ha and 20.65 t/ha, respectively. The highest B:C ratio was recorded in cyantraniliprole 10.26% OD (4.2) followed by flubendiamide 39.35% SC (3.6) and chlorantraniliprole 18.5% SC (3.4).