Akademik Veri Yönetim Sistemi
JOURNAL OF SUSTAINABLE AGRICULTURE, cilt.28, sa.3, ss.99-108, 2006 (SCI-Expanded)
In the present study, the capacity of phosphate solubilizing bacterial strain, Bacillus (FS3) and fungal isolates, Aspergillus FS9 and FS11 have been tested in National Botanical Research Institutes Phosphate nutrient medium (NBRIP) broths containing two different phosphate sources, Ca-3(PO4)(2) and rock phosphate (18% of total P2O5 and CaO 42.2%, of which 27 of P was soluble in 2% citric acid) at two different concentrations (10 and 20 g 250 ml(-1)). NBRIP broth without microbial inoculation was used as the control. The phosphorus solubilizing bacteria and fungi inoculation decreased solution pH and increased electrical conductivity, and Ca and P concentrations in solution culture. The largest pH decrease was found with FS9 fungi inoculation at 20 g 250 ml(-1) with three calcium phosphate (TCP) applications when compared to control. Similarly, the highest EC values, Ca and P concentrations were found in NBRIP broth with FS9 inoculation at the concentration of 20 g 250 ml(-1) TCP when compared to control and other treatments. In addition, it was found that the highest Ca uptake was formed in solution culture inoculated with FS3 bacteria at 10 g 250 ml(-1) rock phosphate (RP) application. The result suggested that phosphate solubilizing bacteria FS3 and fungal strain FS9 have great potential for use bio-tertilizer development in agriculture.