@ARTICLE {CARSKY:1999, title = {Integrated soil management for the dry savanna zone of West Africa: legume rotation and fertilizer N}, author = {Carsky, R. and Oyewole, B. and Tian, G. }, journal = {Nutrient Cycling in Agroecosystems}, year = {1999}, volume = {55}, number = {2}, pages = {95--105}, issn = {1385-1314}, }