Habibi, M., Saroha Manurung and Aulia Juanda Djaingsastro 2026. The Relationship between Soil Conservation Techniques, Topsoil Depth and Vegetation Density in Oil Palm (Elaeis guineensis Jacq.) Plantation Areas at Nusantara IV Plantation Regional II Adolina . JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA). 8, 3 (Sep. 2026), 912 -. DOI:https://doi.org/10.36378/juatika.v8i3.5785.