Fitria, Ai, et al. “Pengaruh Jenis Biochar Dan Jarak Tanam Terhadap Pertumbuhan Dan Hasil Padi Gogo (Oryza Sativa L.): Effect of Biochar Types and Plant Spacing on The Growth and Yield of Upland Rice (Oryza Sativa L.)”. Gontor Agrotech Science Journal, vol. 10, no. 01, May 2024, pp. 25-35, https://agrotech.journal.unida.gontor.ac.id/index.php/gasj/article/view/60.