Table 3. Endospore forming bacterial phosphorus solubilization.
| Isolate1 | Solubilization index2 | pH change3 |
| P. polymyxa SFS (15) | 3±0.5*a | 4.1±0.5a |
| P. polymyxa NFS (1) | 1.5±0.3b | 5.5±0.4b |
| B. megaterium SFS (10) | 4±0.3a | 4.2±0.4a |
| B. megaterium NFS (15) | 1±0.2b | 5.6±0.6b |
| B. cereus SFS (5) | 4.5±0.5a | 4.0±0.5a |
| B. cereus NFS (10) | 1.5±0.3b | 5.7±0.5b |
| B. pumilus SFS (5) | 3.5±0.4a | 4.3±0.4a |
| B. pumilus NFS (6) | 0.5±0.2b | 5.8±0.5b |
1
Endospore forming bacterial isolates as shown in Table 2. Solubilization index and pH change was studied of each isolate in three independent experiments.
2
Bacterial phosphorus solubilization index was determined after bacterial growth in NBRIP agar plates for 7 days at 30C (See Material and Methods).
3
Change of pH by the bacteria was determined after 7 days of incubation in NBRIP broth (See Material and Methods).
*P. polymyxa, B. megaterium, B. cereus and B. pumilus SFS and NFS isolate values (mean value±SE) were compared. Numbers followed by different letter are significantly different (P<0.05) according to Fisher's least significance difference test.