Identification of phosphate solubilizing fungi under Scaphium macropadum stands in Gunung Leuser National Park, North Sumatra

Scaphium macropadum is a wild tree species producing important timber and medicinal fruits. As result of overexploitation, this has decreased its population in the although categorized as least concern based on IUCN red list threatened species. Phosphate solubilizing fungi (PSF) are group soil microorganisms that can increase availability uptake phosphorus (P) by plants. This study aims to isolate phosphate from under stands following morphological identification Soil sampling was carried out randomly, with depth 0–20 cm 12 Gunung Leuser National Park, North Sumatra. Isolation PSF using Pikovskaya medium tricalcium (Ca3(PO4)2) source inorganic P then solubilization activity expressed index (SI). The isolates obtained were identified morphologically genus level. results 15 SI ranging 0.96 1.16. Based identification, all members Aspergillus.