Effect of tree orientation on bending stress to winch oak trunks north one growing seasonz (2009) after planting.
| Tree orientation: north side in nursery planted to the: | Trunk bending stress to four degrees trunk tilt (MN/m2) | Trunk bending stress to five degrees trunk tilt (MN/m2) |
|---|---|---|
| North in landscape | 16.6 ay | 18.8 a |
| South in landscape | 14.2 b | 16.1 b |
↵z There was no effect (P > 0.20) two and three growing seasons after planting.
y Means within columns with a different letter are statistically different at P = 0.06; n = 10, averaged over root pruning. Winching up to three degrees in 2009 was not significant.