Bioefficacy of Garlic, Allium sativum and Tobacco Nicotiana tabacum on Mortality, Ovipository Inhibition and Adult Emergence of the Cowpea Beetle Callosobruchus maculatus (Fab.) on Cowpea Vigna unguiculata (L.) (Walp.)

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dc.contributor.authorBaidoo, P. K.
dc.contributor.authorMochiah, M. B.
dc.date.accessioned2018-03-01T16:51:48Z
dc.date.accessioned2023-04-19T00:30:20Z
dc.date.available2018-03-01T16:51:48Z
dc.date.available2023-04-19T00:30:20Z
dc.date.issued2016-07-31
dc.descriptionAn article published by American Journal of Experimental Agriculture 13(4): 1-9, 2016, Article no.AJEA.26081; available at 10.9734/AJEA/2016/26081en_US
dc.description.abstractAims: To evaluate the efficacy of aqueous and ethanolic extracts of garlic and tobacco in the management of the cowpea beetle (Callosobruchus maculatus) and how these affect oviposition by adult females, adult emergence and sex ratio. Study Design: The study was conducted in a randomised complete block design consisting of six treatments and three replications. Place and Duration of Study: The experiment was carried out at the Biocontrol Section of CropsResearch Institute, Kwadaso, Kumasi over a four month period. Methodology: Aqueous and ethanolic extracts of garlic and tobacco leaves were prepared; these preparations were compared with a standard chemical insecticide, Betallic and a control. Four kilogrammes of untreated cowpea seeds were sorted to obtain whole uninfested grains. Six hundred of the sorted seeds were placed in 1L Kilner jars. Fifty millilitres of each extract was sprayed onto the seeds in their respective jars and allowed to dry. Ten pairs of adult C. maculatus were introduced into each jar. Similar set-ups were done with the insecticide and control seeds. Mortality was recorded every 6 hours after treatment for 24 hours. Data were also collected on oviposition, adult emergence and sex ratio. Results: Garlic-treated seeds did not record any mortality within the first 18 hours; no mortality was recorded in the control seeds, whereas the insecticide-treated seeds recorded 100 % mortality. Significantly fewer eggs were laid on the treated seeds than the control seeds. Sex ratio of the emerged adults varied within the period of observation. Aqueous extracts of the botanicals performed better in terms of insect control and oviposition inhibition than the ethanolic extracts. Conclusion: Aqueous extracts of both plants produced better results than the ethanolic extracts. Aqueous extract, being cheaper, easier and safer to prepare could be adopted by the average small-scale farmer to manage C. maculatus.en_US
dc.description.sponsorshipKNUSTen_US
dc.identifier.citationAmerican Journal of Experimental Agriculture 13(4): 1-9, 2016, Article no.AJEA.26081en_US
dc.identifier.issn2231-0606
dc.identifier.urihttps://ir.knust.edu.gh/handle/123456789/11094
dc.language.isoenen_US
dc.publisherAmerican Journal of Experimental Agricultureen_US
dc.subjectAllicinen_US
dc.subjectaqueous extracten_US
dc.subjectinsect cultureen_US
dc.subjectInsecticideen_US
dc.subjectovipositionen_US
dc.subjectsex ratioen_US
dc.titleBioefficacy of Garlic, Allium sativum and Tobacco Nicotiana tabacum on Mortality, Ovipository Inhibition and Adult Emergence of the Cowpea Beetle Callosobruchus maculatus (Fab.) on Cowpea Vigna unguiculata (L.) (Walp.)en_US
dc.typeArticleen_US
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Baidoo, P. K. and Mochiah, M. B. (2016). Bioefficacy of garlic Alliun sativum and tobacco Nicotiana tabacum on mortality, ovipository inhibition and adult emergence of the cowpea beetle, Callosobruchus maculatus (Fab.).pdf
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