@ARTICLE {EWANSIHA:2015, title = {Effect of Tillage on the growth and yield of cowpea varieties in sudan Savanna agroecology of Northern Nigeria}, author = {Ewansiha, S. U. * and Udensi, U. E. * and Kamara, A. }, journal = {Annual Research & Review in Biology}, year = {2015}, volume = {5}, number = {3}, pages = {275--284}, issn = {2347-565X}, note = {WAHub; CRP Grain Legumes; Cowpea}, doi = {10.9734/arrb/2015/11649}, }