Chidinma S, I., Damian O, A., A. Dada, O., & E. Orji, J. (2020). Response of Cocoyam (Xanthosoma mafafa) Growth, Yield Parameters and Soil Physical Properties of Ultisol at Umudike, Southeastern Nigeria. Asian Soil Research Journal, 2(4), 1-10. https://doi.org/10.9734/asrj/2019/v2i430058