Suntoro, S. et al. 2024. Nutrient status and soil fertility index as a basis for sustainable rice field management in Madiun Regency, Indonesia. SAINS TANAH - Journal of Soil Science and Agroclimatology. 21, 1 (Jun. 2024), 22–31. DOI:https://doi.org/10.20961/stjssa.v21i1.73845.