This study aims to determine the effect of dolomite ameliorant dose and spacing on porang plant growth in peat land. The study used a split plot design where there were main plots in the form of spacing and subplots in the form of 4 doses of ameliorant dolomite, namely 1.5 tons/ha, 2 tons/ha, 2.5 tons/ha, and 3 tons/ha. There were 36 plots of plants with 15 porang seeds planted in each plot…