Browsing by Author "Adebayo Abayomi Olowoake"

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    Comparative Effect of Coated Urea Inhibitor and Poultry Manure on Soil Chemical Properties, Growth and Yield of Jute Mallow Varieties (Corchorus olitorius)
    (2024-12) Adebayo Abayomi Olowoake; Abisoye Oyepero Ojo; Ade Isaac Afe; Mercy Olayinka Afe
    A screen house and field trial was carried out on two varieties of jute mallow (Oniyaya and Amugbadu) at Araromi Ilorin Kwara State and National Centre for Agricultural Mechanization (NCAM) respectively during 2022 cropping season to compare the effect of coated urea inhibitor and poultry manure on soil chemical properties, growth and yield of jute mallow. Five treatments were used for both field and pot experiments. The treatments comprised of control, urea, NPK, urea inhibitor, poultry manure at 45 kg N/ha each replicated three times and fitted into a completely randomized design (CRD). Field experiment was a randomized complete block design with three replicates. All fertilizers used significantly enhanced the growth and dry matter yield of varieties of jute mallow under screen house investigation. In the field study jute mallow yield values of Oniyaya and Amugbadu were 3.8 and 3.6 t ha-1 respectively with poultry manure and these were significantly (p< 0.05) higher than that of urea inhibitor treatment (2.6 and 3.5 t ha-1) after the first cropping. Residual effect of jute mallow yield values obtained from poultry manure was also significantly (p< 0.05) higher than that of urea inhibitor values. Poultry manure at 45 kg N ha-1 had a significant and additive effect on soil nutrients after harvesting of the two varieties of jute mallow when compared with urea inhibitor in first and second cropping. Therefore, it can be deduced that application of poultry manure at 45 kg N ha-1increased soil productivity and led to higher jute mallow varieties yield than using urea inhibitor.
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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.