IDRIS, S.; ADAMU, M.; MAIYAKI, M. M.; MAHMUD, A. T.; HARUNA, M. A. ASSESSMENT OF PRODUCTIVITY STATUS OF VERTISOLS IN SUDAN SAVANNA ZONE OF NIGERIA. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 3, n. 4, p. 553–561, 2023. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1685. Acesso em: 20 oct. 2025.