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Irrigation water salinity ratings based on electrical conductivity (Source: [20]).
| EC (dS/m) | <0.65 | 0.65–1.3 | 1.3–2.9 | 2.9–5.2 | 5.2–8.1 | >8.1 |
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| Water salinity rating | Very low | Low | Medium | High | Very high | Extreme |
| Plant suitability | Sensitive crops | Moderately sensitive crops | Moderately tolerant crops | Tolerant crops | Very tolerant crops | Generally too saline |
