Pearson Correlation Coefficients of root attributes (measured 10 cm beyond planted 170 L container root ball) with rest angle and bending stress to tilt trunk 5 and 20 degrees five years after planting.
| Elm | ||||
|---|---|---|---|---|
| Root Attribute | Trunk rest anglez | Trunk bending stress 5 degrees | Trunk bending stress 20 degrees | |
| CSA leewardy | −0.49 | 0.50 | 0.54 | |
| Straightx CSA leewardy | −0.37 | 0.48 | 0.51 | |
| Ascendingw CSA leewardy | −0.48 | 0.40 | 0.57 | |
| Straight-rootx descendingu CSA | NSs | 0.39 | 0.41 | |
| Straight-rootx CSA | −0.40 | 0.33 | 0.40 | |
| CSA | −0.45 | 0.33 | 0.41 | |
| Ascendingw CSA | −0.61 | NS | 0.45 | |
| Maple | ||||
| Depth straightx roots windwardv | NS | 0.49 | NS | |
| Downwardt CSA windwardv | 0.40 | 0.47 | NS | |
| Depth straight-rootsx | NS | 0.43 | NS | |
| Descendingu CSA windwardv | 0.40 | 0.42 | NS | |
| Straight-rootx CSA windwardv | NS | 0.41 | NS | |
| CSA windwardv | 0.38 | 0.37 | NS | |
| Depth | NS | 0.37 | NS | |
| Straight-rootx CSA | NS | 0.36 | NS | |
| CSA | NS | 0.34 | NS |
↵z Rest angle = trunk angle after releasing pulling cable following winching to 20 degrees trunk tilt.
↵y Growing in the quadrant toward the pulling winch.
↵x Straight = root segment just beyond the root ball oriented < 60 degrees in either compass direction compared to azimuth of parent root inside root ball.
↵w Ascending = growing up toward landscape soil surface.
↵v Windward = growing in the quadrant opposite the pulling winch.
↵u Descending = growing down < 45 degrees in relation to landscape soil surface.
↵t Downward = growing down > 45 degrees in relation to landscape soil surface.
↵s P > 0.05.