ISKANDAR, Iskandar; IRWANTI, Indah. Use of Volcanic Sand as a Natural Fertilizer: Increasing Release of NutrientsUse of Volcanic Sand as a Natural Fertilizer: Increasing Release of Nutrients. Jurnal Ilmu Tanah dan Lingkungan, [S. l.], v. 5, n. 1, p. 23–28, 2003. DOI: 10.29244/jitl.5.1.23-28. Disponível em: https://journal.ipb.ac.id/jtanah/article/view/2332. Acesso em: 24 dec. 2025.