@ARTICLE {KAMARA:2011c, title = {Phosphorus and nitrogen fertilization of soybean in the Nigerian savanna}, author = {Kamara, A. and Ekeleme, F. * and Omoigui, L. * and Ajeigbe, H. }, journal = {Experimental Agriculture}, year = {2011}, month = {August}, pages = {1--10}, issn = {0014-4797}, note = {First published online}, doi = {10.1017/s0014479711000512}, }