Journal of FARM SCIENCES, Vol 6, No 2 (1993)

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Chemical Control of Rhizopertha dominica Fabricius (Bostry-chide : Coleoptera) Infesting Sorghum Grains in Storage

H.N. Sattigi, K.A. Kulkarni, S. Lingappa

Abstract


Studies were conducted to determine the efficiency of four insecticides, viz., satisfer, malathion, fenitrothion and carbaryl against Rhizopertha dominica Fabricius infesting the sorghum grain in storage. The grains were treated with two concentrations (5 and 8 ppm) each of satisfer and fenitrothion and three concentrations (5, 6 and 16 ppm) each of malathion and carbaryl. Among the four insecticides tested at different levels, satisfer at 5 and 8 ppm was most effective upto 135 days after treatment with 63.33 and 76.66 percent mortality, respectively, followed by carbaryl 16 ppm upto 120 DAT with 80.00 per cent mortality. Further, the effectiveness of fenitrothion was good as compared to malathion and carbaryl. Fenitrothion at 5 and 8 ppm was effective upto 45 and 75 DAT, respectively. Malathion at 8 ppm was effective upto 45 DAT with 56.66 per cent mortality. The effectiveness of carbaryl was very low, only upto 45 DAT with 50.00 per cent mortality in 8 ppm.

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