2010
DOI: 10.1111/j.1365-2672.2009.04489.x
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Comparing phosphorus mobilization strategies using Aspergillus niger for the mineral dissolution of three phosphate rocks

Abstract: Phosphorus deficiencies are limiting crop production in agricultural soils worldwide. Locally available sources of raw phosphate rock (PR) are being recognized for their potential role in soil fertility improvement. Phosphorus bioavailability is essential for the efficiency of PRs and can be increased by acid treatments. The utilization of organic acid producing micro‐organisms, notably Aspergillus niger, presents a sustainable alternative to the use of strong inorganic acids, but acid production of A. niger s… Show more

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Cited by 62 publications
(44 citation statements)
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References 31 publications
(51 reference statements)
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“…Interestingly, we unexpectedly observed the secretion of a large quantity of tartaric acid during solubilization of RP by A. niger An2, which had not previously been reported in other studies. [34]. Rajput et al reported that oxalic acid was also the major organic acid responsible for solubilization of Ca-P by two strains of Klebsiella (SM6 and SM11) [15].…”
Section: Organic Acids Secreted During Solubilization Of Different Phmentioning
confidence: 97%
“…Interestingly, we unexpectedly observed the secretion of a large quantity of tartaric acid during solubilization of RP by A. niger An2, which had not previously been reported in other studies. [34]. Rajput et al reported that oxalic acid was also the major organic acid responsible for solubilization of Ca-P by two strains of Klebsiella (SM6 and SM11) [15].…”
Section: Organic Acids Secreted During Solubilization Of Different Phmentioning
confidence: 97%
“…Because of the precipitation of oxalic acid by calcium ions (12) during phosphate solubilization, a special sampling procedure was adopted. At the end of incubation, culture flasks were removed from the shaker and the suspended matter in the culture medium was allowed to settle for 2 h. Then, 40 ml of the supernatant was filtered through quantitative filter paper (P free, 15-to 17-m pore size) for the analysis of soluble P, soluble F Ϫ , and pH.…”
Section: Microorganismmentioning
confidence: 99%
“…Sabe-se do trabalho de Schneider et al (2010) que os diferentes tipos de rocha contribuem para o pH e a acidez do meio e que estes parâmetros influenciam na solubilização do fósforo como pode ser visto pelos resultados por eles obtidos: rocha fosfática de Catalão Brasil com valores de P = 281 mg/L, pH = 2,62 e acidez = 3,1 g/L, a rocha de Kapuskasing Canadá obtiveram P = 306 mg/L, pH = 2,57 e acidez = 2,0 g/L e Carolina do Norte USA valores de P = 382 mg/L, pH = 3,28 e acidez = 5,1 g/L.…”
Section: Concentração De Fósforo (Ppm) = 3434(λ) -04464unclassified