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Journal of Entomology

Year: 2007 | Volume: 4 | Issue: 3 | Page No.: 258-262
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Authors

L.S. Mulungu

G. Lupenza

S.O.W.M. Reuben

R.N. Misangu

Keywords

Research Article

Evaluation of Botanical Products as Stored Grain Protectant Against Maize Weevil, Sitophilus zeamays (L.) on Maize

L.S. Mulungu, G. Lupenza, S.O.W.M. Reuben and R.N. Misangu
This study was conducted in order to evaluate leaf powder botanical products of Eucalyptus (Eucalyptus macrorhyncha F. Muell), pawpaw (Carica papaya L.), neem (Azadirachta indica A. Juss) and lantana (Lantana camara L.) against the infestation of maize weevil, Sitophilus zeamays (L.) on stored maize grains. These botanicals were compared with synthetic chemical (Actellic Super Dust) and without insecticides application as controls. All tested plant products performed well in the reduction of live insects during maize storage as compared to the no insecticide application. However, pawpaw leaf powder was the most effective in reducing the number of live insects. Similarly, number of damaged maize seeds was relatively less in grains treated with pawpaw leaf powder. This also reflects on the weight loss where the maize grains treated with pawpaw leaf powder were lowest. The weight loss was also less in grains treated with neem and eucalyptus leaf powders. This study suggests that pawpaw, neem and eucalyptus leaf powders can be used as good alternatives to synthetic pesticides against S. zeamays.
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