(c) Effect of soil types on in S. nigrum vitamins at 4 weeks in the first and second trials
| Soil types | Vitamin A (mg/kg) | Vitamin C (mg/kg) | Vitamin E (mg/kg) | |||
|---|---|---|---|---|---|---|
| 1st trial | 2nd trial | 1st trial | 2nd trial | 1st trial | 2nd trial | |
| ST0 | 117 ± 0.07b | 108 ± 0.01c | 100 ± 0.06b | 96 ± 0.02b | 250 ± 0.01c | 238 ± 0.01c |
| ST1 | 125 ± 0.02b | 116 ± 0.05c | 104 ± 0.02b | 99 ± 0.01b | 257 ± 0.02b | 227 ± 0.01d |
| ST2 | 129 ± 0.01b | 120 ± 0.06b | 111 ± 0.03a | 101 ± 0.02a | 262 ± 0.03a | 240 ± 0.03c |
| ST3 | 133 ± 0.02a | 123 ± 0.01a | 114 ± 0.02a | 108 ± 0.02a | 264 ± 0.02a | 253 ± 0.02b |
| ST4 | 137 ± 0.02a | 128 ± 0.03a | 118 ± 0.01a | 108 ± 0.02a | 269 ± 0.03a | 261 ± 0.02a |
Different letters down the same column represent significant difference at p < 0.01.