Formulasi Pupuk NPK Berdasarkan Profil Hara Makro Daun Kelapa Sawit. Jurnal Serambi Engineering, [S. l.], v. 11, n. 3, 2026. Disponível em: https://jse.serambimekkah.id/index.php/jse/article/view/2061. Acesso em: 4 sep. 2026.