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Comparative Efficacy of Cymbopogon citratus and Psidium guajava Powders as Poison against Sitophilus zeamais (Motschulsky) in Stored Maize Grains
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Volume 2, 2015
Issue 4 (July)
Pages: 41-44   |   Vol. 2, No. 4, July 2015   |   Follow on         
Paper in PDF Downloads: 28   Since Aug. 28, 2015 Views: 1858   Since Aug. 28, 2015
Chidi Emmanuel Akunne, Faculty of Biosciences, Department of Zoology, Nnamdi Azikiwe University Awka, Anambra State, Nigeria.
Gladys Nneka Chima, Faculty of Biosciences, Department of Zoology, Nnamdi Azikiwe University Awka, Anambra State, Nigeria.
Benjamin Uzonna Ononye, Faculty of Biosciences, Department of Zoology, Nnamdi Azikiwe University Awka, Anambra State, Nigeria.
Kasarachi Patricia Okafor, Faculty of Biosciences, Department of Zoology, Nnamdi Azikiwe University Awka, Anambra State, Nigeria.
The study was carried out to evaluate the insecticidal actions of two common plant powders on maize weevil, Sitophilus zeamais on maize grains. The plant species studied were Psidium guajava (guava) and Cymbopogon citratus (lemon grass). The test powders were applied separately on maize grains at various concentrations of control, 2 g, 4 g and 6 g. All powders concentrations test caused higher mortality than control group. The insecticidal effect of the test powders was found to be dose dependent. The mortality of adult S. zeamais in maize grains treated with these common plant powders was higher than the control group. The results showed that there was significant difference only in the highest concentration (6 g) of C. citratus and the control (P<0.05). The two test powders are both cheap and safer for human consumption hence is recommended to be used as maize protectants in storage. Further studies on the packaging and sales of these plant powders for easy accessibility to farmers and consumers of maize is also suggested.
Effects, Poison, Guava, Lemon Grass, Zea mays
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