Phytohormones (iaa and ga3) produced by rhizosphere mushrooms in shallot (allium ascolonicum l). As a biostimulant

Abstract

Plants that are symbiotic with microbes will produce phytohormones optimally so that it will trigger the level of tolerance of plants to abiotic and biotic stress including plant pathogens, so it is necessary to explore the rhizosphere mushroom of onion plants in Enrekang regency and test the production of phytohormones (IAA and GA3) to see its potential as biostimulan in Shallot. This study used soil samples of rhizosphere soil of shallot taken at the shallot farming center in Enrekang regency, isolation and testing production of hormone was conducted in the laboratory of plant diseases of Hasanuddin University.  The results achieved there are 20 isolates with the production of IAA hormones ranging from 0.125-3,609 mg / L, the largest IAA production is found in isolates number 3 and 7, while the production of GA3 hormones ranges from 0.991-3,440 mg / L, GA3 production is released in isolate Number 8, 17 and 19.  This shows the great potential for rhizosphere mushrooms to become biostimulan.