Isolation and Evaluation of Rock Phosphate Solubilizing Fungi as Potential Biofertilizer

2015 ◽  
Vol 06 (02) ◽  
Author(s):  
S.A Sane ◽  
S.K Mehta
Keyword(s):  
Rock Phosphate ◽  
Phosphate Solubilizing

scholarly journals ROCK PHOSPHATE SOLUBILIZATION AND ENZYMATIC ACTIVITIES FROM INDIGENOUS BACTERIA ON CASSAVA MILL EFFLUENT CONTAMINATED SOIL

2020 ◽  
Vol 1 (2) ◽  
pp. 37-51
Author(s):  
C. E. Oshoma ◽  
S. O. Nwodo ◽  
I. S. Obuekwe
Keyword(s):  
Acid Phosphatase ◽  
Contaminated Soil ◽  
Rock Phosphate ◽  
Phosphate Solubilization ◽  
Enzymatic Activities ◽  
Available Phosphorus ◽  
Phosphate Solubilizing Bacteria ◽  
Indigenous Bacteria ◽  
Rock Phosphate Solubilization ◽  
Phosphate Solubilizing

The processing of cassava into value-added products is associated with discharge of effluents which contain substances that have adverse effect on the environment. Remediative activity of indigenous bacteria can be stimulated by supplementing effluents with phosphorus. Rock phosphate (RP) solubilization and enzymatic activities from bacteria on the cassava mill effluents (CME) contaminated soil was investigated. Soil mixed with varying concentrations of CME (0, 100, 200, 300, 400, 500 and 600 ml) and 10 g of RP were analyzed on days 0 and 16. Parameters analyzed were changes in pH, heterotrophic bacteria load, phosphate-solubilizing bacteria load, available phosphorus, acid phosphatase, cellulase and urease concentrations. The results showed that the medium containing 400 ml CME contaminated soil had the highest phosphate-solubilizing bacteria load (12.60 ± 2.08 x 106 cfu/ml), available phosphorus (126.00 ± 4.08 mg/kg), acid phosphatase (9.54 ± 0.51 mgN/g/min), cellulase (15.24 ± 0.81 mg/g/6h) and urease concentration (2.15±0.22 mg/g/2h). The control had the lowest phosphate-solubilizing bacteria load and enzymatic activity. Biostimulation of indigenous bacteria to enhance the degradation of cassava mill effluent-contaminated soil, using rock phosphate, showed promising results. This implies that rock phosphate solubilization by indigenous bacteria in CME-contaminated soils could be important for the remediation and reclamation of contaminated lands.

scholarly journals In vitro DISSOLUTION OF ACIDULATED ROCK PHOSPHATE BY PHOSPHATE SOLUBILIZING MICROORGANISMS

2014 ◽  
Vol 20 (2) ◽  
Author(s):  
Ángela Patricia Moreno Quevedo ◽  
Nelson Walter Osorio Vega ◽  
Octavio Augusto González Murillo
Keyword(s):  
Rock Phosphate ◽  
In Vitro Dissolution ◽  
Phosphate Solubilizing

Screening for rock phosphate solubilizing Actinomycetes from Moroccan phosphate mines

2008 ◽  
Vol 38 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Hanane Hamdali ◽  
Brahim Bouizgarne ◽  
Mohamed Hafidi ◽  
Ahmed Lebrihi ◽  
Marie J. Virolle ◽  
...  
Keyword(s):  
Rock Phosphate ◽  
Phosphate Mines ◽  
Phosphate Solubilizing

PHOSPHATE-SOLUBILIZING BACTERIA AND FUNGI IN VARIOUS CULTIVATED AND VIRGIN ALBERTA SOILS

1983 ◽  
Vol 63 (4) ◽  
pp. 671-678 ◽  
Author(s):  
R. M. N. KUCEY
Keyword(s):  
Calcium Phosphate ◽  
Rock Phosphate ◽  
Solution Culture ◽  
Phosphate Solubilizing Bacteria ◽  
Southern Alberta ◽  
Fungal Populations ◽  
Phosphate Solubilizing ◽  
Bacteria And Fungi ◽  
Fungi Imperfecti ◽  
Total P

Seventeen sites throughout southern Alberta were sampled in the spring of 1981. Total and NaHCO3-extractable phosphorus and soil texture were determined for each soil sampled. Phosphate-solubilizing and total bacterial and fungal populations were determined by serial dilution and plate counting. Available P constituted an average of 1% of the total P present in the soils. Phosphate-solubilizing bacteria and fungi made up 0.5 and 0.1%, respectively, of the total bacterial and fungal populations. A highly significant correlation was found between the numbers of total and phosphate-solubilizing fungi and the levels of total P in the soil. As a group, the fungi were superior to bacteria in solubilizing both freshly precipitated calcium phosphate and Idaho rock phosphate. Fungi also retained this ability over many subculturing transfers. A high percentage of the bacterial isolates lost their solubilizing ability when subcultured. A significant correlation was found between an organism’s ability to solubilize freshly precipitated calcium phosphate in agar plates and Idaho rock phosphate in solution culture. Key words: Fungi imperfecti, Penicillium sp., phosphate-solubilizing microorganisms

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