Goji, Shangkum Yildun, Susinya Habila, Japhet Joel Gongden, Stephen John Dache, John Stephen Gushit, and Dauda Kankemwa. 2026. “Design, Formulation, and Kinetic Evaluation of a Slow-Release NPK Fertilizer Derived from Engineered Biochar and Sewage Sludge”. Journal of Science Research and Reviews 3 (5): 134-48. https://doi.org/10.70882/josrar.2026.v3i5.237.