Exploring the Triad: pH, Nitrogen, and Phosphorus Characteristics of Peat Soils in Humbang Hasundutan RegencySarah Patumona Manalu, T. Sabrina and Yasmine Anggia SariE3S Web Conf., 519 (2024) 03009DOI: https://doi.org/10.1051/e3sconf/202451903009