The Effect of Application Compost and Biochar from Salak Leaf Sheaths on Carbon Status and Growth of Corn Plants (Zea mays L.) in Ultisol Soil. Jurnal Online Pertanian Tropik, [S. l.], v. 11, n. 1, p. 19–28, 2024. DOI: 10.32734/jopt.v11i1.15629. Disponível em: https://idjpcr.usu.ac.id/jpt/article/view/15629. Acesso em: 4 feb. 2026.