Siahaan, Megawati, Arief Setiawan Sutanto, and Sion Calvin Simanjuntak. “Pengaruh Pemberian Beberapa Sumber Unsur Hara N Terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis Guinensis Jacq) Di Pembibitan Utama”. Jurnal Agro Estate 5, no. 2 (December 31, 2021): 75–81. Accessed November 25, 2024. https://ejurnal.itsi.ac.id/index.php/JAE/article/view/91.