Tidal swamplands are a potential resource for rice cultivation, but face major constraints in the form of high soil acidity, low base saturation, and dynamic groundwater level fluctuations. This study aims to assess the soil fertility status and determine the Soil Fertility Index (SFI) value in tidal swamplands of typology B and C in Mulya Sari Village, Banyuasin Regency. The research method us…