SyakurS., ZaitunZ., DarusmanD. and SiagianG.M. 2024. Improving the Physical Properties of Ex-Coal Mining Soil Planted with Sweet Corn (Zea mays saccharata L.) Using Pine Wood and Sawdust Biochar . Media Konservasi. 29, 4 (Nov. 2024), 540. DOI:https://doi.org/10.29244/medkon.29.4.540.