@INBOOK {BATIONO:1991, title = {Fertilizer management strategies for legume-based croping systems in the West African semi-arid tropics}, author = {Bationo, A. * and Ndunguru, J. * and Ntare, B. R. and Christianson, C. B. and Mokwunye, A. U. }, year = {1991}, type = {Phosphorus nutrition of grain legumes in the semi-arid tropics, edited by C. Johansen, K.K. Lee and K.L. Sahrawat}, pages = {213--226}, publisher = {ICRISAT}, address = {Patancheru, India}, }