Entomotoxicity of Six Indegenous Plants Extracts in Controlling Callosobrochus Maculatus (Fabricius) (Coleoptera: Chrysomelidae) Infestation in Stored Vigna Unguiculata L.Walp
Journal Title: IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) - Year 2016, Vol 11, Issue 6
Abstract
Biological investigations were conducted to assess the insecticidal activities of n-hexane leaf extract of Solanum tuberosum, Annona muricata, Cymbopogon citrates, Vernonia amygddalina, Caesalpinia pulcherima and Lantana camara individually against the cowpea weevil Callosobruchus maculatus. The six plants leaf extracts showed significant (p≤0.05) insecticidal activities relative to control by increasing repellant and mortality rate, inhibiting oviposition and first filial generation progeny emergence and reducing seed damage. 100% mortality was accomplished by Lantana camara (at 5%) and Annona muricata (at 5%) in 72 hours, and both plant extracts at (3%) in 96 hours. Lowest significant (p≤0.05) oviposition first filial progeny emergence and seed damage were all obtained in Lantana camara extract at 5% concentration while the control gave the highest value for the three parameters (oviposition = 355.0, F1 progeny emergence = 88, seed damage = 100). Repellant class varied between II and V; with Lantana camara and A. muricata having a comparable and significant (P≤0.05) value of 84.42 and 80.88 respectively at 5% concentration. All test plant extracts at high concentrations of (3 and 5%) caused significant increase in repellant and mortality but a significant reduction (P≤0.05) in oviposition, fecundity, progeny emergence and seed damage relative to control.
Authors and Affiliations
Mofunanya A. A. J, Nta, A. I2
Keywords
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- EP ID EP387159
- DOI 10.9790/3008-1106064549
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