Browsing by Author "James Adebayo Ojo"

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    Effects of sources of nitrogen fertilizers on soil chemical properties, growth and dry matter yield of maize varieties
    (Direct Research Journals, 2024-06-20) Adebayo Abayomi Olowoake; James Adebayo Ojo; Ade Isaac Afe
    A pot experiment was conducted in the screen house of Kwara State University, Malete, Nigeria to compare the effect of sources of nitrogen fertilizers on soil chemical properties on two maize varieties (SUSWAM and LNTP-Y), growth and dry matter yield as well as its residual effect. The treatments comprised of control, poultry manure, granular urea, prilled urea and neem coated urea at 100 and 110 kg N/ha respectively, each replicated three times and fitted into a completely randomized design (CRD). Growth and yield parameters taken were; plant height, number of leaves, stem girth and dry matter yield. Moreover, the results showed that application of neem coated urea and poultry manure at 100 and 110 kg N/ha respectively significantly (p< 0.05) increased the growth and yield parameters of the both maize varieties when compared with other fertilizer treatments at first and second planting. Application of poultry manure at 110 kg N/ha had a significant and additive effect on soil nutrients after harvesting of SUSWAM and LNTP-Y maize varieties at first and residual planting followed by neem coated urea at 100 kg N/ha. Therefore, neem coated urea at 100 kg N/ha and poultry manure at 110 kg N/ha could serve as a fertilizer for the production of maize variety and soil amendment.
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    Integrating Insecticide Spray Time and Weeding Regime to Manage Insect Pests and Yield of Cowpea in the Southern Guinea Savanna of Nigeria
    (Entomological Society of Nigeria, 2023-10-27) James Adebayo Ojo; Florence Bukky Aina1; Emmanuel Oyamedan Imoloame1; Abdulwasiu Ibrahim2
    Insecticide treatments are recommended for the control of insect pests in cowpea (Vigna (L) Walp) in Sub-Saharan Africa. Nonetheless, these have unfavorable effects on man and the environment, in addition to being costly for smallholder farmers. The goal of this study was to find the optimum insecticide spray time and weeding to manage insect pests and increase yield of cowpea. The experiment was designed as a randomized complete block in a split-plot arrangement with three replications. The main plots consisting of spray time of insecticide application while the sub-plots consisting of weeding regimes. Data collected includes insect pest’s abundance, damage assessment and yield. The major insect pests observed were the cowpea aphids, thrips, maruca and pod suckingbugs. Insecticide sprays applied twice at 50 percent flowering and 50 percent podding, as well as a weeding regime applied either thrice or twice – at 3, 6, and 9 or at 3 and 6 weeks after sowing –effectively reduced insect population and damage, and increased yield of cowpea This recommendation can be incorporated into cowpea integrated pest management strategies among farmers in the study location.
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    Integrating Insecticide Spray Time and Weeding Regime to Manage Insect Pests and Yield of Cowpea in the Southern Guinea Savanna of Nigeria
    (Entomological Society of Nigeria, 2023-10-27) James Adebayo Ojo; Florence Bukky Aina; Emmanuel Oyamedan Imoloame; Abdulwasiu Ibrahim2
    Insecticide treatments are recommended for the control of insect pests in cowpea (Vigna unguiculata (L) Walp) in Sub-Saharan Africa. Nonetheless, these have unfavorable effects on man and the environment, in addition to being costly for smallholder farmers. The goal of this study was to find theoptimum insecticide spray time and weeding to manage insect pests and increase yield of cowpea. The experiment was designed as a randomized complete block in a split-plot arrangement with threereplications. The main plots consisting of spray time of insecticide application while the sub-plots consisting of weeding regimes. Data collected includes insect pest’s abundance, damage assessment and yield. The major insect pests observed were the cowpea aphids, thrips, maruca and pod suckingbugs. Insecticide sprays applied twice at 50 percent flowering and 50 percent podding, as well as a weeding regime applied either thrice or twice – at 3, 6, and 9 or at 3 and 6 weeks after sowing –effectively reduced insect population and damage, and increased yield of cowpea This recommendation can be incorporated into cowpea integrated pest management strategies among farmers in the study location.