Influence of pre-harvest insecticide spray on seed quality of pigeonpea
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Authors
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SHIVAGOUDA PATIL
AICRP on Seed Technology, National Seed Project, University of Agricultural Sciences, GKVK, Bangalore - 560 065
Author
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S. RAJENDRA PRASAD
AICRP on Seed Technology, National Seed Project, University of Agricultural Sciences, GKVK, Bangalore - 560 065
Author
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G.T. THIRUMALARAJU
AICRP on Seed Technology, National Seed Project, University of Agricultural Sciences, GKVK, Bangalore - 560 065
Author
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M. BYRE GOWDA
AICRP on Seed Technology, National Seed Project, University of Agricultural Sciences, GKVK, Bangalore - 560 065
Author
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R. SIDDARAJU
AICRP on Seed Technology, National Seed Project, University of Agricultural Sciences, GKVK, Bangalore - 560 065
Author
Keywords:
Pre-harvest, insecticide spray, spinosad, seed quality, insect infestationAbstract
A field experiment was carried out to study the efficacy of various new insecticides viz., emamectin benzoate 5SG, fluebendiamide 480SC, spinosad 45SC and malathion 50EC against pulse beetle (Callosobruchus chinensis) and their effect on seed quality of pigeonpea (Cajanus cajan) cv.BRG-1. Among the insecticides, the pods sprayed with spinosad 45 SC @ 0.4 ml/1 recorded maximum seed qualities viz., germination (83.75 per cent), seedling length (23.01cm), seedling dry weight (36.51mg), seedling vigour index-1 (3012) and vigour index II (1909), pH of seed leachate (6.51), total dehydrogenase activity (2.66), field emergence (79.50 per cent), less pod infestation (23.50 per cent), electrical conductivity of seed leachte (1.027 mS) as compared to control. Spinosad 45SC @ 0.4 ml/1 proved to be best in enhancing seed quality parameters.
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References
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