International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 5 8 2016 08 10 Screening of Some Microbial Isolates from Soil Samples for Solubilization of Inorganic Phosphate 1 6 EN E. A. Ekundayo 1 Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria T. A. Ogunnusi 2 Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria O. O. Ogunmefun 3 Department of Biological Sciences, Afe Babalola University, Ado-Ekiti,Nigeria M. O. Alegbe 4 Department of Biological Sciences, Afe Babalola University, Ado-Ekiti, Nigeria A. O. Oso 5 Department of Chemical Sciences, Afe Babalola University, Ado-Ekiti, Nigeria > Research Paper 2015 8 3 2016 08 10 Thirty two bacterial and six fungal strains isolated from different soil samples collected from the Federal University of Technology, Akure and Afe Babalola University, Ado Ekiti, Nigeria were qualitatively and quantitatively screened for phosphate solubilization ability using National Botanical Research Institute phosphate agar and broth containing tricalcium phosphate as the single source of phosphorus. The result of the qualitative screening showed that none of the isolates formed any halo zone which was indicative of phosphate solubilization. However, in liquid medium, fifteen bacterial isolates showed phosphate solubilization which was evident by decrease of pH in National Botanical Research Institute phosphate broth after 24, 48, 72, 96 and 120 hours. All the fungal isolates showed more efficiency in solubilization of phosphate with Aspergillus parasiticus solubilizing most of the phosphate in the medium. Copyright@ International Science Community Association