“Peranan Pupuk Organik Dan NPK Majemuk Terhadap Pertumbuhan Kelapa Sawit TBM 1 Di Lahan Marginal”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 43, no. 3 (February 23, 2016): 242–249. Accessed December 23, 2025. https://journal.ipb.ac.id/jurnalagronomi/article/view/11251.