@ARTICLE {ASADU:1999, title = {Impact of agroecology on soil fertility status and cassava yield in Nigeria: II: contributions of soil properties to cassava yield variations}, author = {Asadu, C. * and Nweke, F. }, journal = {African Journal of Root and Tuber Crops}, year = {1999}, volume = {4}, number = {1}, pages = {20--24}, note = {RTB; Root and Tuber; Cassava}, }