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Chemical control of rice stem borer, Scirpophaga incertulas Walker and leaf folder, Cnaphalocrocis medinalis Guenee on basmati



Chemical control of rice stem borer, Scirpophaga incertulas Walker and leaf folder, Cnaphalocrocis medinalis Guenee on basmati



Journal of Insect Science 8(2): 225-226



Seven insecticides, viz. MIPC 50 WP @ 0.5, 0.75, 1.0 and 1.5 kg a.i./ha, phosphamidon 85 WSC, monocrotophos 36 SL, endosulfan 35 EC, formothion 25 EC, methyl parathion 50 EC and quinalphos 25 EC 0.5 kg a.i./ha were evaluated at 60 and 80 days after transplanting (DAT) against stem borer, Scirpophaga incertulas Walker and at 57 and 77 DAT against leaf folder, Cnaphalocrocis medinalis Guen. Methyl parathion, monocrotophos, phosphamidon and endosulfan were found superior over other insecticides (8.4 to 9.5% dead hearts -DH and 8.2 to 9.4% white earheads-WE) as compared to untreated control (22.64% DH and 25.79% WE) against the stem borer. The above treatments also resulted in significant reduction of damaged leaves due to leaf folder (6.6 to 12.4% folded leaves) at 57 DAT and 3.4 to 10 per cent folded leaves at 77 DAT as compared to 25.8 to 28.5 per cent folded leaves in the untreated plots.

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Accession: 002776954

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