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Phosphorus And Nitrogen Fertilization Of Soybean In The Nigerian Savanna

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Relation http://oar.icrisat.org/5441/
http://dx.doi.org/10.1017/S0014479711000512
 
Title Phosphorus And Nitrogen Fertilization Of Soybean In The Nigerian Savanna
 
Creator Kamara, Alpha Y.
Ekeleme, Friday
Omoigui, Lucky O.
Aheigbe, Hakeem A.
 
Subject Fertilizer Appications
 
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
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/5441/1/Phosphorus%20and%20nitrogen.pdf
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.