Siregar H, Rizal K, Ayu Putri Septyani I, Walida H. Identification of Available Nutrients NPK of Oil Palm Soil (Elaeis guineensis Jacq) in the Phase of Immature Plants. JUATIKA [Internet]. 2024May31 [cited 2025Jul.9];6(2):629–634. Available from: http://ejournal.uniks.ac.id/index.php/JUATIKA/article/view/3662