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Potential of Light Spectra as a Control of Cowpea Weevil, Callosobruchus maculatus, Activity

Kehinde, F. O. and Dedeke, G. A. and Popoola, O.I. and Isibor, Patrick Omoregie (2019) Potential of Light Spectra as a Control of Cowpea Weevil, Callosobruchus maculatus, Activity. In: 8th International Biotechnology Conference, Exhibition and Workshop, 2019, Online.

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Damage of stored cowpea by the weevil, Callosobruchus maculatus, is of great concern in Nigeria. The study investigated the potential of light spectra in the control of the bean weevil; In the first trial, ten individual bean weevils were directly irradiated with green, yellow, red and white and ambient(control) light generated by electric bulbs at 25 Watts. In the second trial, ten individual weevils were housed with 700 bean seeds and exposed to the light spectra. Each light treatment was replicated thrice and weevils were exposed for two hours daily for 10days. Mortality of the bean weevils was monitored daily, and percentage bean damage was determined in 10days. Data obtained were expressed as mean (±��);���� damaged beans were compared by analysis of variance and separated by Duncan multiple range test at p<0.05. Under direct exposure, the highest mortality rate was recorded under blue light in the first five days followed by red light. From day six to nine, the highest mortality was recorded under the white light followed by blue and red. The highest mortality was recorded under white light followed by red and blue light under indirect exposure (with beans). Percentage bean seed damage was significantly (p≤0.05) lower under white (1.38%), blue (1.53, 2.38%) and red (2.48%) lights; a significantly (p<0.05) higher bean damage was recorded under ambient light (17.81%). White, blue and red lights were lethal to beans weevil by killing them and reducing their activities.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Beans, Beans weevils, mortality and light spectra
Subjects: Q Science > QH Natural history
Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 29 Nov 2019 09:01
Last Modified: 29 Nov 2019 09:01

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