Green Global
Foundation Journal
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INSECTICIDAL ACTIVITY OF ACACIA CATECHU BARK EXTRACT AGAINST FOUR STORED PRODUCT PESTS (Pages : 1 - 5)
M. KHATUN, D. TALUKDER AND A. HYELaboratories experiment were carried out to determine the efficacy of (+)Catechin based insecticidal product against four stored product pests viz. Tribolium castaneum (Herbst), Tribolium confusum Duval, Callosobruchus chinensis L. and Sitophilus oryzae L. Catechu was extracted from Acacia catechu Willd. (Leguminosae) bark then was processed to prepare (+)Catechin. Finally (+)Catechin based insecticidal product was prepared by treating with HCl and sodium bicarbonate. Results demonstrate that (+)Catechin based insecticidal product was effective against the insect species at all the duration but it did not produce any effect on S. oryzae at 24 hours interval. The susceptibility of the insect species was in the following order. T. confusum > T. castaneum > C. chinensis > S. oryzae; T. confusum > T. castaneum > C. chinensis > S. oryzae; T. confusum > C. chinensis > T. castaneum > S. oryzae and T. confusum > C. chinensis > S. oryzae > T. castaneum at 24, 48, 72 and 96 hours intervals respectively. It is striking to note that at all the duration lowest LD50 values were observed for T. confusum adults. Download