Waraningtyas I, Iskandar, Anwar S. Phosphorus and Potassium Availability in Soil Ameliorated by Different Quality Organic Materials Enriched with Humic Substances. J. Il. Tan. Lingk. [Internet]. 2026 Apr. 1 [cited 2026 Jun. 21];28(1):20-7. Available from: https://journal.ipb.ac.id/jtanah/article/view/49320