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Efficacy of Rubber Seed Oil, Palm Oil and Palm Kernel Oil as Grain Protectants against <I>Sitophilus zeamais </I>(Mots.) (Coleoptera: Curculionidae) in three Maize Varieties

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Author(s): K.E. Law-Ogbomo | D.A. Enobakhare

Journal: Journal of Entomology
ISSN 1812-5670

Volume: 3;
Issue: 1;
Start page: 40;
Date: 2006;
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Keywords: Adult weevil emergence | mortality | protectant | Sitophilus zeamais | viability | vegetable oils | oviposition | weight loss

ABSTRACT
itophilus zeamais was tested on three maize varieties [Uselu local, SUWAN-1 and Oba Super 1 (8321-18) using a 3x5x3 factorial arrangement in a Randomized Complete Block Design. There were four replications of each of the vegetable oils using application levels of 0, 2.5, 5.0, 7.5 and 10.0 mL kg 1 maize grain. All studies were undertaken under laboratory temperature of 283% rh. Fifteen sexed adult insects were used for each replicate. In all the treatments, a range of significant percentage mortality of adult weevils (55-93%) at 21 days after treatment was obtained (p palm oil> palm kernel oil. The "Uselu" local was found to be more resistant to maize weevil infestation than the improved varieties (SUWAN-1) and Oba super 1 (8321-18).]]>
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