Volume : III, Issue : IV, April - 2014

Isolation and Screening of Efficient Phosphate Solubilizing Microorganisms From Different Soils

G. L. Bhoosreddy

Abstract :

Present investigation compares the phosphate solubilizing potential of fungi (PSF) and bacteria (PSB), isolated from different soil rhizosphere. Most phosphate solubilizing capacity was observed in case of A. niger and B. subtilis than Penicillium sp., and P. aeruginosa. The phosphate solubilizing efficiency of four isolates revealed, maximum reduction at pH at 6.0 on second day of incubation with Bacillus and Pseudomonas sp and on third day at pH 5, with Aspergillus niger & Penicillium. B. subtilis showed maximum phosphate solubilizing capacity (90%) and, A. niger found to be more efficient in solubilization (100%). A pot trial experiment was carried out using tomato plant seedlings. Two growth parameters % germination and height of seedlings over control after 30 days of sowing were studied. Maximum % germination and height of seedling was recorded in A. niger i.e. 100 % and 13 cm. followed by B. subtilis 90 % and 11 cm respectively. Control trials were found to be less as compared to all the tests is 60% and 5cm. Data from the present study support the hypothesis that liberation of organic acids is more with fungi than bacteria.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

G. L. Bhoosreddy Isolation and Screening of Efficient Phosphate Solubilizing Microorganisms From Different Soils International Journal of Scientific Research, Vol.III, Issue. IV Apr 2014

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