Browsing by Author "Abdulbaki, S. A."

Now showing 1 - 3 of 3
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    Bioproductivity and grain quality of two cowpea varieties in relation to frequency of hand weeding
    (Journal of Applied Sciences and Environmental Management, 2019) Olayinka, B. U.; Lawal, A. R.; Abdulbaki, S. A.; Ayinla, A.; Oladokun, L. T.; Udo, O. F.; Akinwumi, M. A.; Etejere, E. O.
    The concern for human health and safety coupled with the increase in herbicides resistant weeds necessitated the need to investigate the effect of frequency of hand weeding on weed suppression, productivity and grains quality in two varieties of cowpea (Tvx 3236 and Ife brown). Plot layout was a split-plot arrangement in complete randomized block design with three replications. The cowpea lines were subjected to five treatments of frequency of hand weeding. Data on weed and crop were subjected to Analysis of Variance. Means were separated using Duncan Multiple Range Test at 0.05 level of significance. Weed species that were found to be preponderant include Brachiaria deflexa, Euphorbia heterophylla and Commelina benghalensis. The three hand weeding at 3, 6 and 9 weeks after planting (WAP) showed the highest weed control efficiency of 90.48 % followed by those of two hand weeding at 3 and 6 WAP (86.98%) and one hand weeding at 3 WAP (74.68%). The weed free check was the most effective in controlling weeds (93.80%). Growth and productivity of the two cowpea lines were enhanced with increase in frequency of hand weeding when compared with the weedy check. Weeds reduced crop yield by 56.17%. The results of grain quality such as crude protein, lipid content, ash and crude fibre were also enhanced with increase in frequency of hand weeding. Generally, growth and yield were higher in Ife brown than Tvx3236. The research was limited to one cropping season and there is need for reproducibility for consistent of results. The study concluded that weeding twice and three times were found to be feasible since these frequencies of weeding times promoted effective weed reduction, higher growth, and yield and grain quality of the two cowpea varieties studied.
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    Effect of Aflasafe® Application on the Productivity, Grain Quality, and Aflatoxin Reduction in Maize (Zea mays L.)
    (Bima Journal of Science and Technology, 2026) Olayinka, B. U.; Abdulbaki, S. A.; Ogidigada, B.; Ajadi, I.; Olahan, G. S.; Oyebanji, A.; Ahmed, O.
    Aflatoxin contamination remains a major threat to food safety, crop quality, and public health in sub-Saharan Africa. Aflasafe, a biocontrol product containing atoxigenic Aspergillus flavus strains, has proven effective in reducing aflatoxin levels, yet its broader agronomic impacts are less understood. This study evaluated the effects of Aflasafe applied at vegetative and flowering stages on maize growth, yield, nutritional composition, and postharvest quality. Application at the flowering stage led to marked improvements in vegetative growth, including plant height, leaf area, and stem girth. Yield components such as ear number, grain count, and overall yield were also significantly enhanced. Proximate composition analysis indicated elevated levels of crude fat, protein, and carbohydrate contents. In addition, grains treated with Aflasafe showed higher germination rates and seed vigor, together with reduced populations of toxigenic A. flavus and aflatoxin concentrations that remained within internationally accepted safety limits. These results demonstrate Aflasafe’s dual potential as a biocontrol and growth-promoting agent, advancing sustainable maize production, food security, and public health resilience.
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    Enhancing germination and seedling growth in salt stressed maize lines through chemical priming
    (Basrah Journal Agricultural Sciences, 2023) Olayinka, B. U.; Abdulbaki, S. A.; Lawal, A. R.; Alsamadany, H.; AbdulRauf, L. B.; Ayinla, A.; Odudu, U. F.
    This study aimed to investigate the tolerance level and the use of primers (H2O, KNO3, ascorbic acid and salicylic acid), in mitigating stress in maize in the newly released cultivars (SWAN-LSR-Y, BR9928-OMR-SR-Y and OMR-LSR-SY). Activities of SOD, APX, CAT and GSH and lipid peroxidation were investigated, to measure the biochemical response of the primed maize seeds. Maize seeds primed with KNO3 and ascorbic acid improved germination and anti-oxidative potential against ROS in ameliorating the salinity stress, while salicylic acid slowed germination. The same trend was followed in the seed vigour index and radicle length of seeds primed with ascorbic acid, which recorded the highest values. The control was observed to have the highest seed vigour index, while seeds primed with salicylic acid showed the least vigour index in the maize seeds. Increased salinity stress showed adverse effects on all growth parameters. Of the maize cultivars tested, SWAN-LSR-Y showed the most tolerance to salinity stress, in terms of germination. Significant high enzymatic activities and lipid peroxidation were recorded in seeds primed with ascorbic acid and KNO3 show their importance in plant metabolic activities.