Ebsan Marihot Sianipar, Sumihar Hutapea, and Siti Mardiana. “Effects of Oil Palm Trunk Biochar on Nutrient Uptake and Growth Performance of Oil Palm Seedlings in Pre-Nursery ”. JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA), Vol. 7, no. 1, Jan. 2025, pp. 281 -, doi:10.36378/juatika.v7i1.4131.