Improvement of Soil Chemical Properties and Growth of Maize due to Biochar Application on Ultisol. JOURNAL OF TROPICAL SOILS, [S. l.], v. 24, n. 3, p. 101–107, 2019. DOI: 10.5400/jts.2019.v24i3.101-107. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/393. Acesso em: 21 nov. 2025.