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The physical characteristics of ultisols due to the provision of biochar made from palm oil plant residue aims to determine the effect of giving various biochar made from oil palm plant residues on the physical properties of Ultisols. The research design used completely randomized design, consisting of 5 treatments, namely K = without giving biochar, BB = oil palm stem biochar, BP = oil palm frond biochar, BT = oil palm empty bunches biochar and BK = combination of biochar ingredients. Eachdoi:10.25077/jsolum.17.2.21-28.2020 fatcat:pmt2ifeikfbj7apme55ymh4lai