Item | Summer | Winter | Pvalue | ||||
---|---|---|---|---|---|---|---|
 | Outdoor | Indoor | Outdoor | Indoor | Production system, P | Season, S | P × S |
I (μg/L) | 20.11 ± 2.16 | 329.27 ± 27.78 | 15.00 ± 1.67 | 254.18 ± 11.26 | < 0.001 | 0.024 | 0.055 |
Zn (μmol/L) | 13.85 ± 0.79 | 14.33 ± 0.82 | 15.38 ± 0.91 | 18.24 ± 0.69 | 0.135 | < 0.001 | 0.011 |
Cu (μmol/L) | 3.64 ± 0.68 | 13.47 ± 0.64 | 1.55 ± 0.44 | 15.71 ± 0.69 | < 0.001 | 0.512 | < 0.001 |