YIELD PERFORMANCE OF COWPEA VARIETIES (Vigna unguiculata (L.) Walp) UNDER VARYING PLANT POPULATIONS AND PHOSPHORUS FERTILIZER RATES IN NIGERIAN SAVANNA ZONE. FUDMA Journal of Agriculture and Agricultural Technology, [S. l.], v. 12, n. 1, p. 144–154, 2026. DOI: 10.33003/jaat.2026.1201.17. Disponível em: https://jaat.fudutsinma.edu.ng/index.php/jaat/article/view/529. Acesso em: 13 jun. 2026.