Bioproductivity of two contrasting watershed management system were evaluated in pot and field experiment to ascertain the effect of management and slope on the productivity of okra. The field studies were conducted on four slope gradients of watershed in an experiment arranged in a randomized complete block design (RCBD). The pot experiments were carried out on the soils of the two management practices (managed and unmanaged) and were arranged in a complete randomized design (CRD) with three replicates. NPK fertilizer 15:15:15 at the rate of 150kg/ha was applied as blanket treatment and okra used as test crop. The experiment was carried out on a sandy loam typic paleudult in Amawbia Anambra state southeast Nigerian. The data generated from the study were subjected to analysis of variance and significant mean differences were separated using least significant difference (LSD). The result of the study showed that natural environments of the four slopes in managed plots significantly increased the growth and yield parameters of okra than the unmanaged plots. Slope 4 (plain) of the managed watershed recorded statistically similar productivity with the unmanaged plots by virtue of their non-significant difference (P < 0.05) exhibited in most of the parameters assessed. The NPK fertilizer result indicated that the treatment boasted the productivity of both managed and unmanaged watershed ecosystem.
Enhancing the Productivity of Moringa Oleifera Lam. For Sustainable Development in Agroforestry (Published)
The study evaluated the effectiveness of NPK (15:15:15), poultry manure, cow dung and green manure of Tithonia diversifolia and Chromolaena odorata leaves on the growth of Moringa oleifera. The experiment was laid out in a Completely Randomized Design (CRD) with 11 treatments replicated 5 times. Data were collected for the growth parameters (height, number of leaves and stem diameter) of the M. oleifera seedlings. It was observed that Moringa seedlings grown on soil treated with 20g of T. diversifolia had significantly (P<0.05) higher plant growth parameters than those on soil with the other treatments including the control. Those treated with NPK had similar higher growth parameters comparable to those plants treated with 10g of T. diversifolia and both 10 and 20g of C. odorata. There were also significant differences in the quantities of the manure and NPK applied on the M. oleifera seedlings. This study shows the effectiveness of T. diversifolia and C. odorata as organic manure for improving and enhancing the growth of M. oleifera. Utilization of such weed species component as green manure, compost material or in improved fallow system will help the poor resource farmer to create more sustainable and productive crop yield.
Effect of Organic and Inorganic Fertilizers on Yield and Economic Return of Acha (Digitaria Spp) Varieties in Lafia, Nigeria (Published)
These studies were conducted at the Teaching and Research farm, College of Agriculture, Lafia, Nasarawa State, Nigeria during the wet seasons of 2013 and 2014. To determine the effect of poultry manure and NPK fertilizer on growth and grain yield of Acha varieties and profit margin for using these inputs in Lafia, Nasarawa state, Nigeria. The experiment was carried out in a randomized complete block design, replicated three times. The results showed that application of poultry and NPK fertilizer rates significantly enhance growth parameters in both two seasons. 10/ha of poultry manure and 120kg/ha of NPK produced plants with highest number of tillers (12.93 and 13.24); whil D. eburua variety produced the tallest plant (14.78 and 16.24) in both years. Application of 10t/ha of poultry manure produced the highest grain weight of 0.98t/ha and 1.27t/ha; while NPK fertilizer rate at 120kg/ha also produced the highest grain weight of 1t/ha and 1.21t/ha in both years. All these grain weight are statistically at par with application of 5t/ha of poultry manure and 60kg/ha of NPK fertilizer, but lower than the control in both years. Varieties also had a significant effect on the grain yield of Acha. Digitaria exilis proved its superiority agains D. eburua by producing the highest grain weight of 1.31t/ha and 1.52t/ha in both years. Interaction between poultry manure and NPK did not produce ant significant effect on the grain weight of acha in both years. The total revenue (TR) under organic manure was N54,775.00 and N54,950.00 under inorganic (NPK) fertilizer. The gross margin (GM) was estimated to be N27,575 and N25,900.00 under organic manure and inorganic fertilizer respectively. Various ratios calculated gave a positive value which shows that Acha production in the area is viable and profitable.