| Northern red oak (Quercus rubra L.), scarlet oak (Q.
coccinea Muenchh.), sweetgum (Liquidambar styraciflura L.), and
'Autumn Flame' red maple (Acer rubrum L.) liners were produced in
copper-treated (100 gm Cu(OH)2/l white latex paint) or untreated
black plastic 3.8 l container (Lerio C-700) in 1989. In spring 1990, liners
were transplanted into field plots. Half the liners produced in untreated
containers were root pruned just before transplanting, half were not. Liners
grown in copper-treated containers were not root pruned before transplanting.
Survival percentage was high for all species ranging from 92% for red maple
to 65% for scarlet oak. Three years after transplanting, red and scarlet
oak liners produced in copper-treated containers had higher survival rates
(but not statistically significant) and greater regrowth (taller, greater
trunk caliper and percent central leader formation) than liners produced
in untreated containers, whether root pruned or not before transplanting.
Regrowth of red maple and sweetgum were not affected by container type used
during used during liner production. The study demonstrates species differences
to transplanting; each species responds to transplant via a unique combination
of growth characteristics. Transplant responses are expressed up to three
years after transplanting. |