Figure 4.
Relationship between pH (a), organic acid (b) and acid phosphatase (c) of bacterial culture and solubilised P. Each value represents the mean of three replicates with standard deviation shown by error bars.
Relationship between pH (a), organic acid (b) and acid phosphatase (c) of bacterial culture and solubilised P. Each value represents the mean of three replicates with standard deviation shown by error bars.