Nitrogen and Phosphorus Dynamics in a Legume Based Integrated Nutrient Management System
1 Department of Agricultural Production and Management Science, Tai Solarin University of Education, Ijebu-Ode, Nigeria.
2 Department of Soil Science and Land Management, University of Agriculture, Abeokuta, Nigeria
3 Department of Soil Science and Land Management,Federal University of Agriculture, Abeokuta
* Corresponding author: amusanao@oou.edu.ng
2 Department of Soil Science and Land Management, University of Agriculture, Abeokuta, Nigeria
3 Department of Soil Science and Land Management,Federal University of Agriculture, Abeokuta
* Corresponding author: amusanao@oou.edu.ng
Abstract
This study was carried out on a tropical alfisol for two consecutive years to investigate the effect of a legume based integrated nutrient management system on the soil status of nitrogen and phosphorus. The treatments consisted of two rates of poultry manure (0 and 5 t ha-1 ), three rates of N fertilizer (0, 50 and 100 kg N ha-1 applied as urea), three rates of P fertilizer (0, 30 and 60 kg P ha-1 applied as single superphosphate) and two soybean treatments (with or without legume residue) arranged as a factorial experiment using Randomized Complete Block Design (RCBD) with three replicates. Soil samples were collected, processed and analyzed before planting and after harvests each year for N and P and other soil properties. Results show that the impact of legume on Soil P was the least as it accounted for mere 4.0% and 0.8% increase in Soil P in 2004 and 2005 respectively. Manure x P fertilizer interactions produced the most significant effect on Soil P as it accounted for 47.2% increase in Soil P at 5 t ha-1 M and 60 kg P ha-1 level of combination over control. Of all the interactions studied on Soil N, only the LxMxN and MxN interactions were significant. In 2005, MxN interaction increased Soil N by 110.5% while LxMxN interaction increased Soil N in 2004 by 166%. Manure, fertilizer N and fertilizer P were found to be controlling factors in Soil N and soil P. Soybean on its own had little or no effect on Soil N and P.
Keywords
phosphorus
integrated
management
nitrogen
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How to Cite
O, A. A., T, A. M., & Azeez, J. O. (2011). Nitrogen and Phosphorus Dynamics in a Legume Based Integrated Nutrient Management System. Nigerian Journal of Soil Science, 21(2), 13-23. https://doi.org/10.67042/njss.2011.v5zlzmfc
A. A. O, A. M. T, and J. O. Azeez, "Nitrogen and Phosphorus Dynamics in a Legume Based Integrated Nutrient Management System," Nigerian Journal of Soil Science, vol. 21, no. 2, pp. 13-23, August 2011. doi: 10.67042/njss.2011.v5zlzmfc