Mean values of tree performance and soil assessments over the three site types.
| gravel | paved | turf í | ïignif | |
|---|---|---|---|---|
| 1990 shoot exten (cm) | 5.4a | 4.2b | 6.8a | .001 |
| 1991 shoot e×ten (cm) | 12.9b | 1.1b | 19.9a | .001 |
| 1990 leaf colour (1-5) | 2.97b | 3.15b | 1.94a | .001 |
| 1991 leaf colour (1-5) | 2.88b | 3.09b | 1.78a | .001 |
| 1990 leaf area(cm2) | 59.0b | 57.4b | 79.1a | .001 |
| 1991 leaf area(cm2) | 99.5b | 94.1b | 140.9a | .001 |
| 1990 crown density (%) | 77a | 77a | 70b | .05 |
| 1991 crown density (%) | 69b | 66b | 78a | .001 |
| 1990 N (%) | 1.24c | 1.40b | 1.90a | .001 |
| 1991 N (%) | 1.43b | 1.52b | 1.99a | .001 |
| 1990 P (%) | 0.11b | 0.12b | 0.14a | .001 |
| 1991 P (%) | 0.13c | 0.15a | 0.15b | .001 |
| 1990 K(%) | 1.42b | 1.78a | 0.88c | .001 |
| 1991 K(%) | 1.42a | 1.49a | 1.02b | .001 |
| 1990 Mg (%) | 0.27ab | 0.28a | 0.24b | .05 |
| 1991 Mg (%) | 0.30a | 0.31a | 0.23b | .001 |
| 1990 Ca (%) | 1.80a | 1.51b | 1.75a | .01 |
| 1991 Ca (%) | 1.59ab | 1.47b | 1.71a | .01 |
| 1991 Cl (%) | 0.44a | 0.35b | 0.41 ab | .058 |
| dry bulk density (g/cm3) | 1.92a | 1.83b | 1.76c | .001 |
| cum s.m.t.* | ||||
| 1 May 90 -31 Jul 90 | 2820b | 1020c | 3841a | .001 |
| cum s.m.t. | ||||
| 1 May 91 -31 Jul 9 | 12907a | 26c | 1214b | .001 |
Within each row, figures accompanied by the same letter are not significantly different.
↵* cumulative soil moisture tension expressed as the total shortfall of values below 80 as recorded on the gypsum block meter.