Abstract
Heavy metals contribute to soil contamination and can decrease soil productivity. Compost and Ca(OH)2 can restore heavy metal contaminated soil. The purpose of this study was to examine the effectiveness of compost and Ca(OH)2 in reducing cadmium (Cd) contamination in Inceptisols. The study was carried out between February and April of 2021. The study used a completely randomized design (CRD) with treatments of control (0), Ca(OH)2 at a dose of 1 ton/ha, 2 tons/ha, 3 tons/ha, and compost at a dose of 10 tons/ha, 20 tons/ha and 30 tons/ha. Each treatment was repeated three times. The results showed that the treatment had a significant effect on soil pH, organic C, N-total, and soluble Cd in the soil. The highest dose of compost and Ca(OH)2 is equally effective to lower the concentration of Cd in contaminated Inceptisols. This finding is significant in the restoration of Cd contaminated soils.
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