@INBOOK {EKANAYAKE:2001c, title = {Cassava-based farming systems in the semiarid zone: need for a change in agronomic practices}, author = {Ekanayake, I. J. and Okarter, U. }, year = {2001}, type = {Root crops in the 21st century: proceedings of the Seventh Triennial Symposium of the International Society for Tropical Root Crops (ISTRC) - Africa Branch, Oct 1998}, pages = {241--245}, publisher = {Government of Benin}, note = {RTB; Root and Tuber; Cassava}, }