Figure 4. Heat map associations of the TCP solubilization (left) and siderophores production (middle) abilities of bacterial isolates with soil conditions and with each other (right).

Phos  =  TCP solubilization, and Sid  =  siderophores production. 1 =  no halo, 2 =  small or average halo, and 3 =  large halo. The red cells  =  less isolates than expected under those conditions, the green cells  =  excessive number of isolates under those conditions, and the yellow cells  =  no significant differences between the observed and expected values. Percentages and residuals are shown in S2 Fig. Sample sizes and p values are presented on S3 Table.