Halotolerant bacterial diversity isolated from sodic soil samples of Allahabad, Uttar Pradesh

Abstract

The present research work was conducted to screen the diversity of salinity tolerant heterotrops, Azotobacters and phosphate solubilizing bacterial isolates to be used as bio-fertilizer. In present study, sodic soil samples were collected from different villages of Allahabad District was analyzed for their physicochemical properties and isolation of halotolerant bacterial diversity. Results of the study showed that out of 10 soil samples, 8 samples were sodic in nature (ESP ≥ 15 & pH ≥ 8.5) and 2 samples were saline sodic (EC ≥ 4.0, ESP ≥ 15 & pH ≥ 8.5). All samples are low in their available phosphate content and most are recorded low level of available nitrogen content. The maximum cfu/g soil was obtained in Village Panwari which was 74.0 cfu x104/g soil in Nutrient agar medium, 8.6 cfu x104/g soil in Ashbey agar medium and 63.0 and cfu x104/g soil in Pikovaskay agar medium and minimum cfu/g soil was recorded from Pawar, 36.0 cfu x104/g soil in Nutrient agar medium, 3.00, cfu x104/g soil in Ashbey agar medium and 29.0 cfu x104/g soil in Pikovaskaya agar medium. From the results of the study it is concluded that microorganisms are cosmopolitan in nature and can be isolated and applicable for their specific use in nature.