@MISC {ASADU:2013, title = {Comparison of cassava yield variations from four-year continuous cultivation under sole and mixed cropping systems in an ultisol of Eastern Nigeria}, author = {Asadu, C. * and Dixon, A. * and Okechukwu, R. }, year = {2013}, howpublished = {Abstract, P. 144 in the book of abstracts and programme of the 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, Alisa Hotel, Accra, Ghana}, note = {In: Competitiveness of Root Crops for Accelerating Africa's Economic Growth, 12th Triennial Symposium of International Society for Tropical Root Crops-Africa Branch (ISTRC-AB), 30 - 5, October, 2013, Alisa Hotel, Accra, Ghana. RTB; Root and Tuber; Cassava}, }