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Full Length Research Paper
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An assessment of
two plant product efficacy for the control of the maize
weevil (Sitophilus zeamais Motschulsky) in stored
maize
O. I. Mbah1 and M. O.
Okoronkwo2
1Department
of Pest Management Technology, Federal College of
Agriculture, P. M. B. 7008, Ishiagu, Ebonyi State, Nigeria.
2Department
of Agricultural Extension and Management, Federal College of
Agriculture, P. M. B. 7008, Ishiagu, Ebonyi State, Nigeria.
*Corresponding author. E-mail:
oibomusmba@yahoo.com
Accepted 3 July, 2008 |
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Abstract |
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Both Chromolaena odorata and Citrus limon
are common in tropical areas as an important weed and fruit
crop respectively. Dried and pulverized leaves of C.
odorata and fruit peels of C. limon were
evaluated at the rate of 15, 10 and 5 g per 100g of maize
grain variety JZSR. C. odorata proved to be
efficacious in the control of the maize weevil (Sitophilus
zeamais) at the three concentrations with percentage
mortalities of 75, 70 and 63.75, respectively, while C.
limon was less effective providing insect mortalities of
60, 50 and 47.50%, respectively. Only C. odorata
showed comparable results to that of Actellic dust
(75.25%, used as a check) conferring with C. odorata
leaf powder at 15 and 10 g, as the Actellic dust, a
better protection against S. zeamais. Although the
rest of treatments were not that protective, they achieved
better protection than the untreated control. On progeny
emergence, there were no significant differences among
treatments. The overall attractiveness of stored grains was
affected by the greenish brown colour of C. odorata
leaf powder.
Key words:
Plant product powder, maize weevil (Sitophilus zeamais
Motschulsky), maize.
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