@ARTICLE {FROSSARD:2017, title = {The challenge of improving soil fertility in yam cropping systems of west Africa}, author = {Frossard, E. and Aighewi, B. and Ake, S. * and Barjolle, D. and Baumann, P. and Bernet, T. and Dao, D. * and Diby, L. N. * and Floquet, A. * and Hgaza, V. K. * and Ilboudo, L. J. and Kiba, D. I. and Mongbo, R. L. * and Nacro, H. B. * and Nicolay, G. and Oka, E. * and Ouattara, Y. F. * and Pouya, N. * and Senanayake, R. L. and Traore, O. I. *}, journal = {Frontiers in Plant Science}, year = {2017}, volume = {8}, number = {1953}, pages = {1--8}, issn = {1664-462X}, note = {WAHub; RTB; Yam; Published 21 November 2017}, url = {https://doi.org/10.3389/fpls.2017.01953}, doi = {10.3389/fpls.2017.01953}, }