David, D., Sari, M. K., & Siregar, S. H. (2025). The Analysis of Phosphorus and Potassium As Macronutrients And Zinc As A Micronutrient In Solid Organic Fertilizer Derived From Biowaste As An Applied Science Innovation Supporting SDG 2, 9, And 12. Urecol Journal. Part D: Applied Sciences, 5(2). Retrieved from https://e-journal.urecol.org/index.php/ujas/article/view/274