Jamidi1, D. . Irawan, and M. Y. P. Purba. “The Effect of Covering Media Composition and Fertilizer Cow Manage on The Growth of Palm Oil (Elaeis Guineensis J.) Seeds in Pre-Nursery”. Jurnal Pertanian Tropik , vol. 8, no. 3, Dec, Feb. 2022, pp. 175-8, doi:10.32734/jpt.v8i3, Dec.8094.