Article Figures & Data
Figures
- Figure 1.
Red oak trunk-caliper growth during 8 years after lining out at 1-m-tall whips. Trunk caliper was measured 15 cm above the ground. These trees were randomly selected from those trees thinned prior to digging the experimental trees. Each point is the mean of 7 trees. Pre-harvest trunkcaliper growth is predicted by the equation: C = 0.17 + 1.1 IT, (R2 = 0.99) where C is trunk caliper, in cm, and T is time, in years, from lining out.
Tables
- Table 1.
Growth of large (8.4-cm caliper) and 2 vigor classes of small (3.6-cm caliper) red oak trees following transplanting. Untransplanted small trees were included as a control.
Shoot length (cm) Leaf area (cm2) Height (m) Trunk caliper (m) Treatment 1996 1997 1998 1996 1997 1998 1996 1997 1998 1999 1996 1997 1998 1999 Large caliper 15.6 a 2.6 c 6.3 b 41.8 b 41.2b 65.1 b 5.5 a 5.3 a 6.7 a 6.9 a 8.4 a 9.4 a 11.2 a 12.3 a Small caliper low vigor 6.3 b 7.4 b 25.7 a 50.0 b 67.4 a 107.6 a 2.9 b 3.0 b 4.5 b 5.0 b 3.6 c 5.1 b 6.0 c 6.7 b Small caliper high vigor 7.3 b 7.7 b 13.1 b 47.6 b 60.4 ab 108.9 a 3.2 b 3.2b 4.4 b 4.9 b 3.6 c 4.5 b 5.6 c 7.0 b Small-caliper untransplanted control trees 6.6 b 39.1 a 31.3 a 83.9 a 85.2 a 101.4 a 3.4 b 3.5 b 4.3 b 4.7 b 4.3 b 6.0 b 7.8 b 9.8 ab Large trees averaged 8.4 cm in trunk caliper where transplanted; small-caliper trees averaged 3.6 cm in trunk caliper. Low-vigor trees averaged 1 m in height when lined out in 1992, whereas high-vigor trees averaged 2 m in height.
Each value is the mean of 5 lateral shoots per plant. Means within a column followed by different letters are significantly different from each other at a = 0.05 level using the Student-Newman-Kuels test.
Each value is the mean of 5 leaves per plant.
Height and caliper values are the average of 12 plants per treatment in 1996, except for small-caliper untransplanted trees, where there were 5 trees. In 1997 and 1998, the values for the large trees are the average of the 5 surviving trees.
- Table 2.
Linear and cubic regression equations and correlation coefficients for tree height and caliper growth 4 years after transplanting. Large-caliper trees averaged 5.5 m in height and 8.4 cm in caliper at transplanting. Small-caliper trees averaged 2.4 m in height and 3.6 cm in caliper when transplanted. High-vigor small trees averaged 2 m in height when lined out, low-vigor small trees averaged 1 m. Five small trees were not transplanted and served as controls. The regression equations were developed from 5, 12, 12, and 5 trees for large-caliper, small-caliper-high-vigor, small-caliper-low-vigor and control trees, respectively.
Regression equation R2 Height, linear HL = 4.70 + 0.42T 0.46 HSHV = 1.52 + 0.68T 0.92 HSLV = 1.76 + 0.62T 0.95 HControl = 2.01 + 0.55T 0.95 Height, quadratic HL = 5.60 − 0.35T + 0.13T2 0.83 HSHV = 2.22 + 0.08T + 0.10T2 0.94 HSLV = 2.06 − 0.36T + 0.04T2 0.95 Hcontrol = 1.76 + 0.76T − 0.037T2 0.96 Caliper, linear CL = 6.76 + 1.06T 0.92 CSHV = 2.42 + 0.86T 0.95 CSLV = 2.22 + 0.88T 0.92 Caliper, quadratic CL = 8.26 − 0.23T + 0.21T2 0.97 CSHV = 2.82 + 0.52T + 0.057T2 0.95 CSLV = 3.72 − 0.41T + 0.21T2 0.99 CControl = 2.88 + 0.43T + 0.19T2 0.99 HL = height (m) of large-caliper trees
HSHV = height (m) of small-caliper high vigor trees
HSLV = height (m) of small-caliper low vigor trees
HControl m height (m) of untransplanted small-caliper trees
CL m caliper (cm) of large-caliper trees
CSHV = caliper (cm) of small-caliper high vigor trees
CSLV = caliper (cm) of small-caliper low vigor trees
CControl = caliper (cm) of untransplanted small-caliper trees
T = time in years
All equations were significant at the P = 0.01 level.
In this issue
Jump to section
Related Articles
Cited By...
- No citing articles found.