Rusdi, Tutik Nugrahini, and Purwati. 2013. “Dose Effect of NPK Mutiara and Dolomite At Plant Nursery Oil Palm (Elaeis Quineensis Jacq) In Main Nursery: Pengaruh Dosis Pupuk NPK Mutiara Dan Dolomit Pada Pembibitan Tanaman Kelapa Sawit (Elaeis Quineensis Jacq) Di Main Nursery”. Agrifarm: Jurnal Ilmu Pertanian 2 (2):36-43. https://journal.uwgm.ac.id/agrifarm/article/view/1253.