SALISU, S. G. .; HASSAN, M. R. .; ADAMU, H. Y. .; MUSA, A. .; AHMED, S. A. .; ABDULLAHI, U. .; UMAR, S. J. .; ABDULSALAM, M. .; HARUNA, M. A. .; ABUBAKAR, S. A. . Effect of NPK (20:10:10) Fertilizer Rates and Age of Harvest on Forage Yield and Quality of two Maize (Zea mays L) Varieties in Northern Guinea Savannah. Nigerian Journal of Animal Production, [S. l.], v. 53, n. 2, p. 1–10, 2026. DOI: 10.51791/njap.v53i2.9191. Disponível em: https://njap.org.ng/index.php/njap/article/view/9191. Acesso em: 19 sep. 2026.