%0 Journal Article %T Effect of Inter-row and Intra-row Spacing on Phenological Characters of Cowpea (Vigna unguiculata L. Walp) Varieties in Semi-arid Region of North-Western Nigeria %A A. J. Augustine %J New name: ISSN: Past name: ISSN: Frequency: Journal DOI: Peer-review model: NAAS Score (2017): Digital Archiving: Disclaimer: %D 2018 %R 10.9734/JEAI/2018/13986 %X (1) Mukhtar Musa, Usmanu Danfodiyo University, Nigeria. %U http://www.sciencedomain.org/abstract/27379