Effect of Rust (Uromyces Phaseoli Var. Vignae) Infection on Photosynthetic Efficiency, Growth and Yield Potentials of Cowpea (Vigna Unguiculata L. Walp) in an Open Field System. GJSFR [Internet]. 2020 Mar. 16 [cited 2026 Aug. 6];20(C2):49-61. Available from: https://journalofscience.org/index.php/GJSFR/article/view/2614