Table 5.

Effect of different blue–red light ratios in LED lighting on the micronutrients of kale microgreens, mg g⁻¹ DW.

Treatment	Manganese	Iron	Zinc	Copper	Boron
B0R100	0.056 ± 0.000 b	0.082 ± 0.001 c	0.051 ± 0.001 b	0.0052 ± 0.0001 b	0.018 ± 0.001 a
B10R90	0.054 ± 0.001 c	0.090 ± 0.003 bc	0.052 ± 0.002 b	0.0056 ± 0.0002 b	0.022 ± 0.005 a
B25R75	0.056 ± 0.000 b	0.083 ± 0.001 c	0.053 ± 0.001 b	0.0059 ± 0.0001 b	0.018 ± 0.003 a
B50R50	0.055 ± 0.001 bc	0.084 ± 0.004 c	0.055 ± 0.005 ab	0.0076 ± 0.0001 a	0.021 ± 0.002 a
B75R25	0.055 ± 0.001 bc	0.103 ± 0.004 a	0.060 ± 0.001 a	0.0079 ± 0.0011 a	0.021 ± 0.006 a
B100R0	0.062 ± 0.000 a	0.095 ± 0.003 b	0.061 ± 0.002 a	0.0089 ± 0.0001 a	0.026 ± 0.001 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.