Table 1.

Trunk cross-sectional area of Acer rubrum produced in seven container types after 5 years in the landscape^{^z}

Container type	Trunk cross-sectional area (cm²)
SBPC	158 abc^{^y}
Copper-coated SBPC^{^x}	140 bc
Low-profile BPC^{^w}	167 abc
ARPC^{^v}	117 bc
Low-profile ARPC	222 a
Wooden box	178 ab
Copper-coated wooden box	105 c

↵z Average trunk cross-sectional area at planting = 11.9 cm².
↵y Numbers followed by the same letter are not significantly different at α = 0.05.
↵x SBPC = standard black plastic container.
↵w BPC = black plastic container.
↵v ARPC = air root-pruning container.