Raising pH of Red-Yellow Podsolik Soil by Adding Ashes and its Relation to Nitrogen Fixer Microorganism Acitivities. Biospecies, [S. l.], v. 2, n. 2, 2012. DOI: 10.22437/biospecies.v2i2.251. Disponível em: https://www.online-journal.unja.ac.id/biospecies/article/view/251. Acesso em: 23 apr. 2026.