Table of Contents
International Scholarly Research Notices
Volume 2015 (2015), Article ID 616213, 8 pages
Research Article

Soil Fertility, Phosphorus Fractions, and Maize Yield as Affected by Poultry Manure and Single Superphosphate

1Institute of Agricultural Research and Training, Obafemi Awolowo University, P.M.B 5029, Moor Plantation, Ibadan, Oyo State, Nigeria
2Federal University of Agriculture, Abeokuta, Nigeria

Received 8 May 2014; Revised 13 August 2014; Accepted 19 August 2014

Academic Editor: Othmane Merah

Copyright © 2015 A. O. Ojo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A field experiment was conducted in 2007 and 2008 on a slightly acidic alfisol. Poultry manure (PM) was applied at 0, 5 t ha−1, 10 t ha−1, 15 t ha−1, and 20 t ha−1 in combination with SSP at 0, 15 kg P ha−1, 30 kg P ha−1, 45 kg P ha−1, and 60 kg P ha−1, which was replicated three times. The pH and organic C were significantly increased by the application of PM alone while available P was highly increased by the sole application of SSP. Plant tissue P was significantly increased with the application of 30 kg P ha−1 while the largest grain yield was obtained when PM at 20 t ha−1 was combined with SSP at 60 kg P ha−1. The buildup of organic P was observed when PM was applied at 15 t ha−1 while the combination of the two treatments increased residual P and Fe-P. However, P occlusion was effectively reduced with the sole application of PM. Organic P and residual P however had a strong positive relationship with the grain yield. Comparing the sole and combined application of the treatments, the combined application was more effective for most of the parameters observed.