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Articles by M.M. Biswas
Total Records ( 1 ) for M.M. Biswas
  M.A. Rahman , M.A. Taleb and M.M. Biswas
  The present study was carried out to evaluate the botanical products viz. leaf powder and extract of Nishinda (Vitex negunda Linn.), eucalyptus (Eucalyptus macrorhyncha F.muell.), Bankalmi (Ipomoea sp.), ash of babla wood (Acacia arabica Willd), oil of neem (Azadirachta indica A. Juss.), sesame (Sesamum indicum) and safflower (Carthmus tinctorius) against the attack of grain weevil (Sitophilus granarious) on wheat. The results showed that the higher concentration of oil (0.25-1.0%) indicated the lower infestation, less emergence of adults, less seed damage, less weight loss and higher inhibition rate. Neem oil was most effective in checking the insect infestation and allowing the least number of F1 adults emerged from the seed. The wood ash was found highly effective in prohibiting the adult emergence (F1) with higher inhibition rate and showed reduction in seed damage and weight loss(%) over other treatment. It was concluded that botanical product acted as insect antifeedant and the order of toxicity of three plant leaf extracts on grain weevil were : nishinda> eucalyptus> bankalmi.
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