DJUNIWATI, S.; NUGROHO, B.; PULUNGGONO, H. B. The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock. JOURNAL OF TROPICAL SOILS, [S. l.], v. 17, n. 3, p. 203–210, 2013. DOI: 10.5400/jts.2012.v17i3.203-210. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/153. Acesso em: 19 jul. 2025.