Table 1.
Plant growth promoting activities of cypermethrin degrading strains in presence and absence of chlorpyrifos.
| Bacterial strains | Trp (μg mL−1) | IAA (μg mL−1) | CP conc. (mg L−1) | IAA (μg mL−1) | Phosphate solubilization |
NH3 production | |
|---|---|---|---|---|---|---|---|
| Zone size (mm) | SI | ||||||
|
Achromobacter xylosoxidans JCp4 |
50 | 15.6 ± 0.4a | Control | 18.8 ± 0.04e | 17 ± 0.57e | 4.2e | +++ |
| 100 | 18.8 ± 0.26c | 100 | 18.3 ± 0.14d | 16 ± 0.5d | 4.0d | +++ | |
| 150 | 23.3 ± 0.3e | 200 | 16.8 ± 0.24b | 11 ± 1.0c | 3.6b | ++ | |
| Ochrobactrum sp. FCp1 | 50 | 15.8 ± 0.34b | Control | 18.3 ± 0.015d | 11 ± 1.0c | 3.8c | +++ |
| 100 | 19.3 ± 0.41d | 100 | 17.5 ± 0.02c | 10.5 ± 0.5b | 3.6b | +++ | |
| 150 | 25.0 ± 0.5f | 200 | 16.6 ± 0.014a | 10 ± 0.0a | 3.3a | ++ | |
Trp = tryptophan; IAA = indole acetic acid; SI = solubilization index.
The values indicate the mean ± SD of three replicates.
+++ = large amount of ammonia; ++ = moderate amount of ammonia.
Means in the same column followed by the different letters are significantly different at p > 0.05.