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The electrical conductivity and osmotic potential of hydroponic solutions used in Experiment 2
| Treatment | Solution EC (dS m−1) | Osmotic potential (MPa) |
| Control | 1.5 | –0.05 |
| NaCl | 11.5 | –0.85 |
| NaCl+DIDS | 11.4 | –0.84 |
| Na+-gluconate | 9.8 | –0.84 |
| Na+-dominant Hoagland | 11.4 | –0.84 |
| Cl–-dominant Hoagland | 11.8 | –0.86 |
