Bala, A. G.; Hassan, M. R.; Tanko, R. J.; Amodu, J. T.; Bature, M. S.; Hassan, A. H.; Alhabib, I. K. Forage Potentials of Two Cowpea (Vigna Unguiculata L. Walp) Varieties As Influenced by Varying Irrigation Frequencies and Phosphorus Application Rates in Zaria. NJAP 2020, 47, 269-277.