Vol. 8, Special Issue 12, Part R (2024)

Sulphur is one of the basic building blocks in microorganisms, plants and animals and hence it is considered to be vital for life. In the present study, a total 36 isolates which were able to oxidize sulphur through the production of sulphate were obtained from the samples of selected places of Maharashtra. Out of thirty-six isolates, seventeen isolates were selected based on the maximum pH reduction test. In this experiment, Sulphur oxidizing bacterial isolates SOB-3, SOB-8 and SOB-13 which was found efficient under in vitro study. The highly efficient three sulphur oxidizing bacterial isolates were selected for the development of consortium as delivery in the form of liquid-based bio formulation in onion field.