Leaf area (LA), shoot length, net photosynthesis (Pn), and water use efficiency (WUE) of English oak (Quercus robur ‘Select’) as affected by different nursery production methods.
| Treatment | LAz (cm2) | Shoot lengthy (cm) | Pnx (μmol CO2*m-2*sec-1) | WUEw (μmol CO2*mmol H2O) |
|---|---|---|---|---|
| Balled-and-burlappedv | 19.18 bt | 4.68 a | 7.51 a | 9.36 a |
| Airplantu | 25.95 a | 3.65 b | 7.34 a | 7.85 b |
↵z Each value is the mean of 50 leaves per plant.
↵y Each value is the mean of 20 shoots per plant.
↵x Readings were taken on five fully expanded leaves per plant under condition of light saturation (PAR > 1,000 μmolm-2s-1) on two dates and averaged.
↵w WUE was calculated by dividing Pn by E.
↵v Balled-and-burlapped five-year-old, 4- to 4.5-m-tall (13- to 15-ft), 12- to 14-cm-circumference (5- to 6-in.) plants.
↵u Airplant container plants with identical characteristics.
↵t Means within columns followed by different letters are significantly different from each other using LSD test, α = 0.05 level.