STUDIES ON SEASONAL INCIDENCE OF MAJOR PESTS OF CAPSICUM (Capsicum annum L.) AND DEVELOPMENT OF IPM MODULES FOR THRIPS, MITES AND FRUIT BORERS
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Date
2018-07
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University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE, BANGALURU)
Abstract
The studies were conducted at Horticulture Research and Extension Centre, Hogalgere, Srinivaspura (Tq.), Kolar (Dt.), Karnataka. During the study, thrips (Scirtothrips dorsalis Hood) and mite (Polyphagotarsonemus latus Banks) were prevalent throughout the cropping season reaching peak population at 75 DAT (3.75/leaf and 3.42/leaf, respectively) and damage at 120 DAT (3.44). Aphids and whitefly were rarely encountered during the study period. Fruit damage by gall midge (14.40 to 25.01%) and fruit borers (10.67 to 21.10%) was recorded from 45 DAT onwards. Natural enemies recorded during the study period were coccinellids (Coccinella septumpunctata (Linnaeus), Coccinella transversalis Fabricius, Cheilomenes sexmaculata (Fabricius) and Illeis cincta Fabricius), Chrysopid (Chrysoperla zastrowi (Sillemi)), Reduviid bug (Rhynocoris fuscipes Fabricius), Pentatomid bug (Eocanthecina furcellata (Wolff)) and unidentified spiders. Among five modules tested against thrips, mites and fruit borers, Module-2 which comprised of neem cake (250 kg/ha), vermicompost (2.5 t/ha), seedling drenching with thiamethoxam 25 WDG (0.3 g/l); marigold trap crop (1:16); two rows of maize border crop; yellow and blue sticky traps (120/ha); fipronil 5 SC (1.5 ml/l) at 15 DAT; fenazaquin 10 EC (2 ml/l) at 25 DAT; spinosad 45 SC (0.2 ml/l) and Helicoverpa armigera and Spodoptera litura pheromone traps (10 each /ha) at 35 DAT; chlorfenapyr 5 EC (1 ml/l) and IIHR vegetable special (5 g/l) at 45 DAT; indoxacarb 15.8 EC (0.5 ml/l) at 55 DAT; IIHR vegetable special (5 g/l) at 60 DAT; thiamethoxam 25 WDG (0.3 g/l) at 65 DAT; emamectin benzoate 5 SG (0.1 g/l) and IIHR vegetable special (5 g/l) at 75 DAT; diafenthiuron 50 WP (1.0 g/l) at 85 DAT and NSKE (5%) at 95 DAT has recorded lowest thrips, mites, gall midge and fruit yield (20.67 t/ha) next only to farmers practice (Module-5 -21.31 t/ha) and registered highest BC ratio (3.61) among the five modules developed.