Assessment of Soil Degradation under Different Toposequence Units and Cropping Systems in the Southern Guinea Savanna of Nigeria. The NOUN Journal of Agricultural Research and Development (NJARD), [S. l.], v. 2, n. 1, p. 70–82, 2026. Disponível em: http://3.79.110.175/agricjournal/index.php/NJARD/article/view/82. Acesso em: 7 jul. 2026.