Abdulkarim, N. Y., Adnan, A.A., Shittu, E. A., Abdulraham, B. L. Productivity of Maize (Zea mays L.) Varieties in Response to Integrated Coal and Inorganic Fertilizer Applications in Nigeria’s Sudan Savanna. AJASFR [Internet]. 2025 Oct. 8 [cited 2026 Nov. 14];20(1):227-53. Available from: https://afropolitanjournals.com/index.php/ajasfr/article/view/1112