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"Submissions Open For Vol. 14,Issue 6, May - June, 2026"
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IJAIR NAAS Score : 3.99 (2016 - 2020)
"Submissions Open For Vol. 14,Issue 6, May - June, 2026"
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IJAIR NAAS Score : 3.99 (2016 - 2020)
"Submissions Open For Vol. 14,Issue 6, May - June, 2026"
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Insecticidal Action of Some Plant Powders on Maize Weevil [Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae)] Affecting Stored Maize Grains (Zea mays)
- Longe O. O.
- This study evaluated the insecticidal action of seven (7) botanical plant powders against the bean weevil [Sitophilus zeamais (Motschulsky) (Coleoptera: Bruchidae)] infesting stored maize grains (Zea mays) under ambient laboratory conditions in Ado Ekiti, Nigeria. The research was conducted in two separate experiments. In the first experiment, two grams (2g) of each of the seven botanical powders were separately measured into Petri dishes with three (3) replicates and one control respectively. 20 unsexed S. zeamais adults from the weevil culture were introduced into each of the Petri dishes containing the botanical powders and the control, with no powder in it. The number of dead S. zeamais adult was counted after 24h, 48h and 72h of the insects’ introduction into each of the Petri dishes. In the second experiment, two grams (2g) of each botanical powder was separately measured into Petri dishes containing thirty grams (30g) of Hybrid NS-1 White maize grains. Each treatment was replicated thrice (3ce) with one control respectively. 20 unsexed adults of S. zeamais from the weevil culture were introduced into each of the Petri dishes containing the maize grains with the botanical powders and also into the control with no powder in it. The adult S. zeamais introduced were left for seven (7) days before removal, for the insects to mate and lay eggs in the maize grains. After 45days of infestation / treatment, data were collected on the following parameters: number of holed / damaged seeds, total number of S. zeamais adults that emerged from seeds and final weight of infested seeds. Analysis of variance was carried out on data collected and significant means separated at 5% level of probability, using Duncan's Multiple Range Test (DMRT). Of the seven (7) plant materials tested, only Corymbia citrodora leaf powder exhibited a total control (100%) on S. zeamais in all its developmental stages, followed with a wide margin of 27. 0% adult emergence, 28. 2 number of damaged (holed) maize grains and 33. 3% of dead S. zeamais adults after treatment. The level of reduction in the pestiferous activities of S. zeamais on stored maize grains, was significantly different from the control in all the botanical powders tested except Moringa leaf powder in which the level of reduction, was not significantly different (p
- Select Volume / Issue:
- Year:
- 2016
- Type of Publication:
- Article
- Keywords:
- Insecticidal Action; Plant Powder; Sitophilus Zeamais; Zea Mays
- Journal:
- IJAIR
- Volume:
- 4
- Number:
- 4
- Pages:
- 784-788
- Month:
- January
- ISSN:
- 2319-1473
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