“RESPONSE OF SOME COWPEA VARIETIES (Vigna unguiculata L.) YIELD TO VARIATIONS IN DAYLENGTH IN SUDAN SAVANNA OF NIGERIA” (2023) FUDMA JOURNAL OF SCIENCES, 3(1), pp. 179–188. Available at: http://162.254.38.185/index.php/fjs/article/view/1441 (Accessed: 17 September 2025).