Amri, Ulil, Fitra Syawal Harahap, Novilda Elizabeth Mustamu, and Luthfi Fadillah Zamzami. “Evaluation of Soil Nutrition Content of Phosphore (P) and Organic-C in Thre Locations of Intensive Rice Field in Balige District”. International Journal of Science and Environment (IJSE) 4, no. 1 (February 29, 2024): 23–27. Accessed July 28, 2025. https://www.ijsenet.com/index.php/IJSE/article/view/93.