Table 1.

Root system characteristics of root pruned and unpruned Colorado spruce root systems.

PrunedUnprunedPruned: Unpruned
Total root system
  Surface area (cm2)244,957 122,4342.00
  Dry weight (g)  1,360    696    1.95
Roots in ball
  Surface area (cm2) 29,009   7,1164.07
  Dry weight (g)    252     65  3.86
Percent of root system surface area included in root ball   11.8     5.82.03