Auliadesti V. Pengaruh Penambahan Biochar Kulit Kopi dan Abu Valkanis dalam Memperbaiki Sifat Kimia Ultisol. Jasita [Internet]. 2025 Feb. 7 [cited 2025 Jul. 5];2(1):1-13. Available from: https://ejournal.arunasita.com/jasita/article/view/7