Table 2.
Effect of saline levels of 1 and 49.7 dS/m and SWE treatments (5, 7 ml/L, and control) on mean values turf quality (TQ), leaf photochemical efficiency (LPE), maximum root length (MRL), root dry weight (RDW), total nonstructural carbohydrates (TNC), proline, K, and Ca of Salam turfgrass.
| Year | 2016 | 2017 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Salinity | 1 dS/m | 49.7 dS/m | 1 dS/m | 49.7 dS/m | ||||||||
| SWE | 5 ml/L | 7 ml/L | Control | 5 ml/L | 7 ml/L | Control | 5 ml/L | 7 ml/L | Control | 5 ml/L | 7 ml/L | Control |
| Turf quality (1–9 scale) | 8.51a* | 8.83a | 8.0b | 5.40a | 5.50a | 4.50 b | 8.50a* | 8.80a | 8.1b | 5.50a | 5.55a | 4.50b |
| Leaf photochemical efficiency (Fv/Fm) | 0.82a | 0.83a | 0.81a | 0.64b | 0.69a | 0.57c | 0.82a | 0.83a | 0.81a | 0.65b | 0.71a | 0.58c |
| Maximum root length (cm) | 22.21a | 23.03a | 20.25b | 47.54a | 48.33a | 43.76 b | 23.21a | 24.11a | 21.13b | 49.11a | 50.71a | 44.76b |
| Root dry weight (mg container−1) | 142.1ab | 144.8a | 125.7c | 233.4b | 247.2a | 211.6c | 146.1a | 148.7a | 124.1c | 236.1b | 242.6a | 205.3c |
| Total nonstructural carbohydrates (mg·g −1 dry wt) | 159.2a | 163.4a | 148.1b | 121.8a | 125.6a | 108.9b | 156.3a | 161.7a | 141.1b | 117.4a | 121.1a | 107.3b |
| Proline content (μg·g −1 fresh wt) | 385.5a | 394.5a | 355.0b | 1,384a | 1,422a | 1,307b | 392.1a | 410.7a | 340.8b | 1,381a | 1,451a | 1,302b |
| K content (mg.g−1 dry wt) | 33.8a | 34.4a | 31.9b | 36.3a | 36.7a | 34.9b | 33.4a | 34.1a | 31.4b | 36.0a | 36.7a | 34.6b |
| Ca content (mg.g−1 dry wt) | 5.2a | 5.3a | 4.7b | 4.6a | 4.6a | 3.8 b | 5.1a | 5.2a | 4.6b | 4.5a | 4.5a | 3.9b |
*
Means followed by different small letter within the same row indicate significant differences between treatments based on LSD-test (P = 0.05).