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Mean concentration of sodium (Na) and macronutrients (N, P and K) in raw sewage, in addition to the amounts applied via fertigation and conventional mineral fertilization during 3-years of experimental period.
| Parameters | Average concentration (mg L−1)* | Fertigation | Mineral fertilization |
|---|---|---|---|
| Input (kg ha−1 year−1) | |||
| Na | 71.4 (± 21) | 300 | – |
| N | 148.9 (± 33) | 647 | 300 |
| P | 17.8 (± 6) | 86 | 70 |
| K | 38.5 (± 11) | 176 | 300 |
* n = 130; values in parenthesis are the standard deviations.
