Table 4.
Effect of Terra Sorb® radicular (BS‐1) and Terramin® Pro (BS‐2) on chlorophyll a (Chl a) fluorescence parameters of lettuce plants grown under three different nitrogen (N) supplies
| Fv/Fm | RC/ABS | PIABS | Ψ Eo | |
|---|---|---|---|---|
| N‐100% | 0.848 ± 0.004a | 0.61 ± 0.04b | 5.77 ± 0.68b | 0.60 ± 0.02a |
| N‐100% + BS‐1 | 0.850 ± 0.004a | 0.70 ± 0.04a | 7.68 ± 1.59a | 0.64 ± 0.03a |
| N‐100% + BS‐2 | 0.850 ± 0.005a | 0.69 ± 0.03a | 7.25 ± 0.47a | 0.62 ± 0.00a |
| P‐Value | NS | ** | ** | NS |
| N‐100% | 0.848 ± 0.004a | 0.61 ± 0.04b | 5.77 ± 0.68c | 0.60 ± 0.02a |
| N‐60% | 0.848 ± 0.004a | 0.64 ± 0.04b | 5.73 ± 0.83c | 0.61 ± 0.02a |
| N‐60% + BS‐1 | 0.848 ± 0.001a | 0.68 ± 0.04b | 6.41 ± 0.68b | 0.66 ± 0.02a |
| N‐60% + BS‐2 | 0.845 ± 0.003a | 0.80 ± 0.10a | 7.79 ± 1.07a | 0.64 ± 0.01a |
| P‐Value | NS | * | *** | NS |
| N‐100% | 0.848 ± 0.004a | 0.61 ± 0.04b | 5.77 ± 0.68b | 0.60 ± 0.02a |
| N‐30% | 0.843 ± 0.007a | 0.44 ± 0.02c | 3.56 ± 0.57c | 0.55 ± 0.02b |
| N‐30% + BS‐1 | 0.842 ± 0.004a | 0.78 ± 0.05a | 6.95 ± 1.29a | 0.62 ± 0.03a |
| N‐30% + BS‐2 | 0.843 ± 0.005a | 0.83 ± 0.07a | 7.54 ± 0.44a | 0.63 ± 0.00a |
| P‐Value | NS | *** | *** | * |
Values are means ± standard error (n = 9) and differences between means were compared by Fisher's least‐significance difference (LSD) test (P = 0.05). Values with different letters indicate significant differences. The levels of significance were represented by P < 0.05 (*), P < 0.01 (**), and P < 0.001 (***).