Table 4.
Effect of different blue–red light ratios in LED lighting on the macronutrients of kale microgreens, mg g−1 DW.
| Treatment | Phosphorus | Potassium | Calcium | Magnesium | Sulfur |
|---|---|---|---|---|---|
| B0R100 | 7.89 ± 0.17 bc | 23.56 ± 0.36 ab | 14.71 ± 0.12 b | 5.67 ± 0.05 a | 10.3 ± 0.45 e |
| B10R90 | 7.70 ± 0.26 bc | 22.53 ± 0.64 b | 15.53 ± 0.47 ab | 5.57 ± 0.22 a | 10.90 ± 0.06 d |
| B25R75 | 8.56 ± 0.08 a | 23.51 ± 0.26 ab | 16.33 ± 0.09 a | 5.71 ± 0.08 a | 12.30 ± 0.20 c |
| B50R50 | 8.39 ± 0.28 ab | 23.30 ± 0.27 ab | 16.34 ± 0.41 a | 5.61 ± 0.15 a | 13.19 ± 0.23 b |
| B75R25 | 8.51 ± 0.26 a | 23.26 ± 0.43 ab | 15.48 ± 0.39 ab | 5.70 ± 0.14 a | 13.86 ± 0.30 b |
| B100R0 | 8.90 ± 0.17 a | 24.46 ± 0.55 a | 16.20 ± 0.37 a | 5.88 ± 0.14 a | 14.95 ± 0.19 a |
B0R100, B10R90, B25R75, B50R50, B75R25, and B100R0: indicate the percentage of blue (B) and red (R) light; DW: dry weight. All values in the table are expressed as mean ± standard error (n = 3). Means with different letters are significantly different at the p < 0.05 level according to Tukey’s honestly significant difference test.