Influence of the biostimulants on net photosynthesis (Pn) (pmol CO2 * m-2 * s-1), evaporation rate (E) (mmol H2O * m-2 * s-1), WUE (water-use efficiency: Pn/E) of Quercus robur ‘Fastigiata’ trees. Average of four sampling dates in 1999 and 2000.
| Treatment | 1999 | 2000 | ||||
|---|---|---|---|---|---|---|
| Pn | E | WUE | Pn | E | WUE | |
| Mycobacter | 12.31 a* | 2.15 a | 5.73 a | 12.44 a | 2.67 | 4.66 ab |
| Root Grow | 12.06 a | 2.13 a | 5.66 a | 13.54 a | 2.71 | 5.00 a |
| Control | 9.06 b | 1.83 b | 4.94 b | 11.09 b | 2.57 | 4.32 b |
| p-value | 0.000 | 0.004 | 0.002 | 0.014 | 0.795 | 0.041 |
↵* Means with different letters are significantly different at p < 0.05.