Akinola, J. O., A. A. Addo, and K. C. Olufokunbi. “Improvement of Annual Forage and Seed Production in the Sub-Humid Zone of Nigeria through Supplement Irrigation”. Agricultural and Food Science 62, no. 1 (January 1, 1990): 63–75. Accessed June 26, 2024. https://journal.fi/afs/article/view/72925.