Production of Indole Acetic Acid (IAA) Hormone from Fungal Isolates Collected from Rhizosphere of Aromatic Rice in Tana Toraja

South Sulawesi, especially Tana Toraja district is an aromatic rice center area that has potential to be developed. Applied cultivation in this area is still traditionally and based on local wisdom, i.e. no use of fertilizers, pesticides and other chemicals. Based on this fact, it is suggested that there are a high diversity of microorganisms from the rice rhizosphere, especially fungus that produce Indole Acetic Acid (IAA) hormone. A series of dilution method was done for isolation of fungal isolates. Purified isolates were cultivated on Potato Dextrose Agar (PDA) until further use. Measurements of IAA production were performed using standard methods. From rhizosphere of aromatic rice Pare Kaloko, 19 fungal isolates were successfully collected, whereas from 15 isolates were collected from Pare Bau. Average production of IAA was ranged from 0.556-2.190 mg /l among isolates of Pare Kaloko, and 0.048-1.810 mg/l among fungal isolates from Pare Bau