Abstract

Twelve salt tolerant yeasts were isolated from various salted soils from Thanlyin Township, Yangon Region. The salt tolerant activity was determined by plate screening in different salt concentrations. Among them, four yeast isolates which have the highest salt tolerance activity (3-14%) were selected for further study. These four isolates grow well in temperature from 15 °C to 45 °C and pH range 3-9. The fertilizing activities of yeast isolates such as nitrogen fixing activity was measured by Indophenol method, phosphorus solubilizing activity and potassium decomposing activity were determined by spectrometry and Flame Photometry respectively. Among four isolates, the best two isolates were chosen and used as biofertilizer for rice cultivation in salted soil.

Keywords:Salt tolerant yeasts; Nitrogen fixation; Phosphate solubilization; Potassium decomposition; Rice cultivation