FERNANDO SITORUS, A.; BAGUS PULUNGGONO, H.; ANWAR, S.; NUGROHO, B. Diagnosis of Macronutrients in Oil Palm (Elaeis guineensis Jacq.) Using DOP and DRIS Methods. Jurnal Penelitian Kelapa Sawit, v. 32, n. 2, p. 83-94, 13 Aug. 2024.