Harahap, Fitra Syawal Harahap, Hilwa Walida, Dahrul Aman Harahap, Roswita Oesman, and Wizni Fadhillah. “Response of Growth and Production of Corn (Zea Mays L) With Liquid Fertilizer in Labuhan Batu Regency”. Jurnal Pertanian Tropik 6, no. 3 (December 1, 2019): 363- 370. Accessed March 29, 2024. https://talenta.usu.ac.id/jpt/article/view/3166.