Table 1.
Plant response of selected vegetable crops to a different percentage of R and B LEDs.
| Plants | Treatments | Plant Height (cm) | Leaf No/Plant | Fresh Mass/Plant (g) | Dry Mass/Plant (g) |
|---|---|---|---|---|---|
| Lettuce | 83% R + 17% B | 19.52 ± 2.98 ab | 30.33 ± 5.54 a | 70.85 ± 5.83 ab | 10.45 ± 1.14 ab |
| 91% R + 9% B | 19.33 ± 4.23 ab | 26.67 ± 3.27 a | 78.45 ± 10.21 a | 12.28 ± 3.52 a | |
| 95% R + 5% B | 18.17 ± 4.62 b | 25.50 ± 3.01 a | 72.52 ± 7.80 ab | 9.15 ± 1.05 a | |
| 100% R | 24.33 ± 2.50 a | 24.67 ± 4.13 a | 64.82 ± 8.05 b | 6.95 ± 0.85 b | |
| LSD < 0.05 | 3.68 | 4.11 | 8.12 | 1.97 | |
| Spinach | 83% R + 17% B | 31.35 ± 3.59 a | 66.67 ± 9.71 a | 63.73 ± 6.36 ab | 9.88 ± 1.09 ab |
| 91% R + 9% B | 35.6 ± 3.32 a | 72.5 ± 8.06 a | 68.73 ± 6.87 a | 12.13 ± 2.7 a | |
| 95% R + 5% B | 29.83 ± 2.93 a | 69.17 ± 5.63 a | 65.25 ± 3.43 a | 11.35 ± 0.50 ab | |
| 100% R | 35.17 ± 6.88 a | 36.33 ± 9.09 b | 47.7 ± 12.09 b | 8.45 ± 2.9 b | |
| LSD < 0.05 | 4.47 | 8.27 | 7.84 | 2.01 | |
| Kale | 83% R + 17% B | 46.05 ± 1.79 b | 27.83 ± 2.92 a | 109.78 ± 9.99 b | 26.21 ± 3.34 a |
| 91% R + 9% B | 46.43 ± 2.82 b | 28.83 ± 2.04 a | 185.6 ± 6.56 a | 28.11 ± 4.12 a | |
| 95% R + 5% B | 47.38 ± 1.51 ab | 28.17 ± 2.14 a | 189.95 ± 7.32 a | 29.71 ± 3.24 a | |
| 100% R | 51.63 ± 4.95 a | 29.17 ± 1.94 a | 85.45 ± 9.98 c | 19.76 ± 3.67 b | |
| LSD < 0.05 | 3.08 | 2.29 | 8.61 | 3.61 | |
| Basil | 83% R + 17% B | 45.68 ± 3.99 a | 101.83 ± 2.78 ab | 41.2 ± 8.82 ab | 10.13 ± 0.73 ab |
| 91% R + 9% B | 47.33 ± 4.34 a | 107.5 ± 9.20 a | 44.23 ± 3.58 a | 13.45 ± 3.22 a | |
| 95% R + 5% B | 48.05 ± 5.76 a | 103.67 ± 7.34 a | 42.92 ± 3.22 ab | 11.95 ± 3.54 ab | |
| 100% R | 51.12 ± 4.48 a | 90.5 ± 10.42 b | 32.68 ± 9.63 b | 9.37 ± 1.19 b | |
| LSD < 0.05 | 4.69 | 7.98 | 6.96 | 2.49 | |
| Pepper | 83% R + 17% B | 467.48 ± 6.6 c | 183.39 ± 8.4 b | 650.88 ± 8.8 c | 218.37 ± 4.5 b |
| 91% R + 9% B | 492.27 ± 6.1 b | 191.61 ± 6.5 b | 683.89 ± 7.5 b | 305.49 ± 4.9 a | |
| 95% R + 5% B | 568.33 ± 6.7 a | 215.37 ± 3.6 a | 783.71 ± 6.1 a | 197.03 ± 4.5 c | |
| 100% R | 459.42 ± 4.7 c | 161.39 ± 5.0 c | 620.82 ± 7.2 d | 183.67 ± 4.9 d | |
| LSD < 0.05 | 6.1 | 6.1 | 7.5 | 4.7 |
Mean separation within columns by the DMRT test at the 5% significant level. (n = 6). Values labelled with different letters in a column are significantly different (p < 0.05). p ≤ 0.05 different from control (100% R) using Tukey’s (Tukey Simultaneous 95% CIs) least significant difference (LSD) test.