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Articles by Sule Hassan
Total Records ( 2 ) for Sule Hassan
  Peter Emmanuel and Sule Hassan
  Background and Objective: Cowpea bruchid Callosobruchus maculatus is one of the most destructive pests of cowpea seed either on the field or in storage and a major constraint to cowpea storage in Nigeria and other Nations. The objective of the study was to evaluate the efficacy of solar heat against C. maculatus infestation. Materials and Methods: Polypropylene sheets (black, blue, yellow, green and transparent) containing 100 g cowpea seeds were infested with C. maculatus and four exposure periods (2, 4, 6 and 8 h) with control (unexposed) were laid out in a completely randomized design and replicated four times. Data was collected on adult mortality, oviposition, egg hatchability, seed germination, weight loss and damage and subjected to two-way analysis of variance (ANOVA) using JMP 13 Computer Software. Results: Findings of this study show that solar heat had effect on C. maculatus causing significant (P0.05) mortality at different exposure periods. Solar treated grains recorded 100% mortality of adult C. maculatus when compared to the control. The resulting effect of solar heat led to significant reduction in oviposition and inhibit progeny emergence to an appreciable level in treated seeds (4.7%) when compared to the control (94.7%) and had no significant effect on germination of the seeds. Also no seed damage and weight loss was observed in cowpea seeds stored for 3 months after exposure to solar heat for 6 and 8 h. Conclusion: It is concluded that, exposing cowpea in transparent polypropylene sheets to solar heat for 2 h can be used to effectively manage the cowpea bruchid.
  Peter Emmanuel and Sule Hassan
  Background and Objective: Post-harvest losses and damage caused by Callosobruchus maculatus in storage serves as a constraint to cowpea production in most developing Nations. The objective of the study was to evaluate the potentials of polypropylene sheets in trapping solar heat for the management of the cowpea bruchid. Materials and Methods: Polypropylene sheets (black, blue, yellow, green and transparent) containing 100 g of cowpea seeds with control (open seeds) was exposed to solar radiation for 2, 4, 6 and 8 h. Temperature inside the sheets was measured and recorded at 30 min’ intervals for each treatments and replicates. Consequently, further experiment was conducted to investigate the effects of solar heat trapped by the polypropylene sheets against the cowpea bruchid. Data was collected on adult mortality and subjected to a two-way analysis of variance using JMP 13 Computer Software. Results: Findings of the study revealed significant difference in the temperature trapped by the varying coloured sheets at different exposure periods. Black and transparent polypropylene sheets recorded the highest amount of temperature trapped (52.88°C) among the colours evaluated. Furthermore, the results of the study showed that solar heat had significant (P0.05) effect on C. maculatus causing mortality at different exposure periods. Conclusion: The technique had great potential in managing C. maculatus, since the highest amount of heat trapped in the polypropylene sheets is sufficiently lethal to all developmental stages stored insect pest.
 
 
 
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