Muktamar, Z.; Lifia, L.; Adiprasetyo, T. Phosphorus Availability As Affected by the Application of Organic Amendments in Ultisols. Sains Tanah J. Soil Sci. Agroclimatology 2020, 17 (1), 16-22. https://doi.org/10.20961/stjssa.v17i1.41284.