Randomized trial evaluated phosphate-solubilizing bacteria's impact on soil P availability in Lixisols, indicating soil properties limit effectiveness.
Key Points
This study aims to evaluate the potential of phosphate-solubilizing bacteria to improve phosphorus availability and plant growth in acidic Lixisols of Burkina Faso.
Six microbial strains assessed for P solubilization traits in vitro using various phosphorus sources.
Pot experiment conducted with cowpea in two Lixisol types amended with Burkina Faso phosphate rock.
Evaluated bacterial effects on soil P availability and plant biomass under greenhouse conditions.
In vitro tests showed phosphate solubilization linked to acidification and presence of specific genes, but limited impact in soil.
Combining bacteria with Burkina Faso phosphate rock did not enhance P availability compared to phosphate rock alone.
Triple superphosphate significantly increased P availability and plant biomass compared to bacterial treatments.