Soybean reaction to the utilization of poultry manure and Phosphorus fertilizer in the Sub-humid Savanna of Nigeria. International Journal of Manures and Fertilizers, [S. l.], v. 1, n. 1, p. 43–49, 2012. Disponível em: https://ijpp.org/journal/index.php/ijmf/article/view/266. Acesso em: 23 mar. 2026.