Cardinal direction | No. of radial roots in #15^{z} | No. of radial roots in #45^{y} | Diameter of five largest roots on #15 root ball periphery (mm)^{x} | Diameter of five largest roots on #45 root ball periphery (mm)^{x} |
---|---|---|---|---|

North 180 degrees | 30 a^{w} | 64 a^{x} | 5.8 a | 6.7 a |

South 180 degrees | 27 b | 51 b | 4.8 b | 5.7 b |

↵

^{z}Number of roots >2 mm diameter growing straight (with less than a 45 degree turn) from trunk between #3 and #15 container position. Trees in #3, #15, and #45 containers for 7, 9, and 15 months, respectively.↵

^{y}Number of roots >2 mm diameter growing straight (with less than a 45 degree turn) from trunk between #15 and #45 container position.↵

^{x}Roots in the outer 3 cm in the north or south half of root ball; no other root attributes were significant.↵

^{w}Means in a column with a different letter are statistically different at*P*< 0.01; n = 80, averaged across container type and root pruning due to insignificant interactions (*P*> 0.10).