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Optimizing phosphorus fertilization for enhanced growth and yield of cowpea (Vigna unguiculata L. WALP) in Sudan savanna agroecology of Nigeria. Agr. Foo. Nat. Res. J. [Internet]. 2025 Sep. 30 [cited 2026 Jul. 23];4(2):180-5. Available from: https://journals.unizik.edu.ng/afnrj/article/view/7212