Akhiruddin Tanjung, Saroha Manurung, and Aulia Juanda Djaingsastro. 2026. “The Relationship Between Soil Conservation Techniques, Topsoil Depth, and Density of Vegetation Growing and Soil Organic C Content in Palm Oil (Elaeis Guineensis Jacq) Plant Areas at Plantation IV Regional II Pabatu North Sumatra Province, Indonesia”. JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) 8 (2), 745 -. https://doi.org/10.36378/juatika.v8i2.5519.