relation: http://oar.icrisat.org/5441/
title: Phosphorus And Nitrogen Fertilization Of Soybean In The Nigerian Savanna
creator: Kamara, Alpha Y.
creator: Ekeleme, Friday
creator: Omoigui, Lucky O.
creator: Aheigbe, Hakeem A.
subject: Fertilizer Applications
description: Soybean (Glycine max) is a major cash crop in the savannas of Nigeria although productivity is typically  constrained by poor soil fertility. The objective of this research was to determine the interactive effect  of N and P on soybean productivity in the northern Guinea and Sudan savannas of northeast Nigeria.  Experiments were conducted using locally adapted early and late maturing cultivars. Two rates of N and  three rates of P fertilizer were also compared at both sites over two years. At both sites, pods plant−1 and  seed yield were higher in 2006 than in 2007, possibly due to better rainfall distribution in 2006. Nitrogen  fertilizer had no significant effect on seed yield or pods plant−1. Application of P fertilizer increased pods  plant−1 by 40–66%. Averaged across site and year, seed yield with no P was 1057.2 kg ha−1 while yield  with 20 and 40 kg ha−1 P were 1941.0 kg ha−1 and 2371.5 kg ha−1, respectively. No significant interaction  effect between N and P fertilizer on seed yield and pods plant−1 was observed. The late maturing cultivar  yielded less than the earlier maturity group cultivar in 2007 likely due to moisture stress. For optimum  seed yield 40 kg of P fertilizer ha−1 is recommended for soybean production in both locations. Our results  suggest that N fertilizer is not critical for soybean production in this area.
publisher: Cambridge University Press
date: 2011
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/5441/1/Phosphorus%20and%20nitrogen.pdf
identifier:   Kamara, Alpha Y. and Ekeleme, Friday and Omoigui, Lucky O. and Aheigbe, Hakeem A.  (2011) Phosphorus And Nitrogen Fertilization Of Soybean In The Nigerian Savanna.  Experimental Agriculture.  pp. 1-10.      
relation: http://dx.doi.org/10.1017/S0014479711000512