Browsing by Author "Olanipekun, S. O."

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    Effect of varying rates of commercially produced organic fertilizer on the growth and fibre yield of kenaf (Hibiscus cannabinus L.).
    (African Journals OnLine (AJOL) platform, 2016) Olanipekun, S. O.; Togun, A. O.; Adejumo, S. A.; Adeniyan, O. N.
    Hibiscus cannabinus L. or kenaf is a fast growing and multipurpose annual crop planted for its horticultural and economie importance. Little is known about its response to different rates of organic fertilizer in Nigeria. The objective of thè study was therefore to evaluate thè effeets of different rates of commercially produced organic fertilizer (Aleshinloye organic fertilizer to be precise) on crop growth rate, vegetative growth and biomass accumulation in kenaf Five different rates of organic fertilizer equivalent to: 0, 70, 100, 130 and 160 kg N ha'1 replicated three times were used in a randomized complete block design (RCBD). There were contrasting results on thè effects of fertilizer rates on growth and physiology of kenaf. Significant effects were observed for some agronomie parameters such as plant height, stem diameter and fibre yield. The application of organic fertilizer at varying rates increased thè bast fibre yield of thè Ifeken 400 variety of kenaf troni 67.29 g/m2 (control) to 98.70, 147.88 and 157.40 g/ni2, in those grown on soil amended with 70, 100 and 130 kg N ha'1 of organic fertilizer respectively. Organic fertilizer could be utilized for thè cultivation of kenaf in Nigeria but thè rate to apply depends on thè nutrient content of thè organic fertilizer.
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    Influence of different fertilizer application rates on growth and yield components of two maize varieties in a forest-savannah-transition agro - ecology zone
    (Faculty of Agriculture, University of Port Harcourt, Rivers State, Nigeria., 2018) Anjorin, F. B.; Adejumo, S. A.; Adediran, J. A.; Adebayo, A. K.; Ogunniyan, D. J.; Olanipekun, S. O.
    Field study on the influence of fertilizer application on growth and yield components of maize was carried out in 2015 and 2016 at the Institute of Agricultural Research and Training (I.A.R&T), Ibadan Station. Two maize varieties (ILE-1-OB and TZPBSR-W) were evaluated under three rates of NPK 20-10-10: 0, 50 and 100 kg N ha-1, one rate of Tithonia compost; 10 t ha-1 (representing 10.7 kg N ha-1) and two rates of NPK and Tithonia compost combinations (50 kg N ha-1+10 t ha-1 and 100 kg N ha-1+10 t ha-1) using randomized complete block design (r=3) arrangement. Selected maize plants were assessed for plant height (cm), leaf area (cm2), stem diameter (cm), number of ears per plant, number of rows per cob, number of kernels per row, number of kernels per cob, 1000-kernel weights and grain yield. Various growth and yield components evaluated increased significantly with increased fertilizer application. Combinations of 50 kg N ha-1+ 10 t ha-1 and 100 kg N ha-1+10 t ha-1 enhanced growth and yield performances of maize better than sole applications of 50 or 100 kg N ha-1. Highest grain yield was obtained under 50 kg N ha-1 +10 t ha-1 (5.26, 5.82 t ha-1) and 100 kg N ha-1 + 10 t ha-1 (5.78, 5.91 t ha-1) in 2015 and 2016 respectively. The use of 50 kg N ha-1 inorganic fertilizer in combination with 10 t ha-1 (10.7 kg N ha-1) Tithonia compost adequately enhanced growth and yield performance of maize in the Forest-Savannah-Transition agro - ecology zone of Nigeria.