The production and characterization of bagasse biochar (Saccharum officinarum Linn) in this study was carried out through pyrolysis for 4 hours at a temperature 1100C. purpose research to determine the capacity as an ameliorant improving fertility marginal lands, especially West Kalimantan, namely peatlands. is known based on gravimetric analysis, which has moisture content 0.38%, ash 2.42%, vo...