WILUJENG, E. D. I.; NINGTYAS, W.; NURAINI, Y. Combined applications of biochar and legume residues to improve growth and yield of sweet potato in a dry land area of East Java. Journal of Degraded and Mining Lands Management, Malang, Indonesia, v. 2, n. 4, p. 377–382, 2015. DOI: 10.15243/jdmlm.2015.024.377. Disponível em: https://www.jdmlm.ub.ac.id/index.php/jdmlm/article/view/128. Acesso em: 19 may. 2024.