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Evaluation of specialized pheromone lures technology for pink bollworm, Pectinophora gossypiella (Saunders) management in Bt cotton
GR BHANDERI, RD PATEL, HR DESAI and MC PATEL
Abstract:
Field experiment was carried out under large plot techniques with three modules, viz., SPLAT module, insecticidal control module and IPM module in comparison to untreated control by keeping 100 m isolation distance during Kharif seasons of 2021 to 2023 at Main Cotton Research Station, Navsari Agricultural University, Surat Gujarat state. The SPLAT module included ready-to-use gossyplure 4% as mating disruption technology, whereas the insecticidal module was comprised of ETL based application of label claimed insecticides and IPM module was developed and validated by ICAR-CICR, Nagpur and SAUs which included eco-friendly window-based strategies for pink bollworm management. The effectiveness of each module was judged by trapping moth activity through installing a pheromone sensor TM-SP trap with lure and the fruiting body damages in each module. The SPLAT technology module was found effective in confusing male population, recorded significantly least male moth catches (mean 4.49 male moth/ trap/SMW) and reduced damage to flowers (5.46%), green bolls (4.83%), locules in green bolls (2.79%), open bolls (7.15%) and locules (3.66%) with less PBW larvae (1.11/20 green bolls), which resulted in to highest seed cotton yield of 22.58 q/ha as against 14.17 q/ha in control showing 59.35% yield increase over control. The SPLAT module was found economical highest benefit over control (IRs. 53206/-). The IPM module was found second best module for the management of pink bollworm. The SPLAT technology where the application of ready-to-use gossyplure 4% as small dollops at plant surface in the field @ 200-250 g/ha thrice at 45, 75 and 105 DAS (at 30 days’ intervals) was found effective and economical for management of pink bollworm.
Keywords: SPLAT, Bt cotton, IPM management, P. gossypiella
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