Article Figures & Data
Figures
- Figure 1.
Basal plate on a naturally growing American Beech, Fagus grandifolia Ehrhart, with the root flare at or above the soil surface.
Tables
- Table 1.
Three-year survival and growth increment of five taxa grown for 3 years in a field site in College Station, Texas, after transplant from 9.3 L (#3) black plastic containers.
Taxaz Planting depthy Survival (no. out of 6) Height (cm) Cross-sectional area (cm2) Trunk diameter (mm) Lagerstroemia Below grade 4 136 ± 26x 3.9 ± 2.6 19.4 ± 4.5 At grade 6 185 ± 21 10.3 ± 2.2 22.8 ± 3.7 Above grade 6 176 ± 21 12.9 ± 2.2 25.7 ± 3.7 Fraxinus Below grade 3 138 ± 30 2.6 ± 3.2 17.4 ± 5.2 At grade 6 170 ± 21 4.9 ± 2.2 24.8 ± 3.7 Above grade 6 194 ± 21 4.2 ± 2.2 22.9 ± 3.7 Nerium Below grade 4 98 ± 26 3.1 ± 2.8 12.1 ± 4.5 At grade 6 121 ± 21 6.8 ± 2.2 21.2 ± 3.7 Above grade 6 145 ± 21 13.2 ± 2.2 18.4 ± 3.7 Platanus Below grade 3 212 ± 26 6.3 ± 2.8 26.6 ± 4.5 At grade 5 183 ± 23 6.0 ± 2.5 25.8 ± 4.0 Above grade 6 257 ± 23 13.6 ± 2.5 40.5 ± 4.0 Vitex Below grade 6 135 ± 21 7.8 ± 2.2 17.6 ± 3.7 At grade 6 152 ± 21 11.4 ± 2.2 23.6 ± 3.7 Above grade 6 150 ± 21 12.0 ± 2.2 25.6 ± 3.7 ↵zFive taxa included Lagerstroemia indica × Lagerstroemia fauriei ‘Basham’s Party Pink’, Fraxinus pensylvanica, Nerium oleander ‘Cranberry Cooler’, Platanus occidentalis, and Vitex agnus-castus ‘LeCompte’.
↵yRoot collar placed at grade or 7.6 cm (3 in) above or below grade.
↵xValues represent the means (± standard errors) of six plants per taxa and planting depth combination.
- Table 2.
Analysis of variance effects significance for 3 year survival, height, total cross-sectional trunk area, and trunk diameter five taxa grown for 3 years in a field site in College Station, Texas, after transplant from 9.3 L (#3) black plastic containers.
Analysis of variance effects Survival Height Cross-sectional area Trunk diameter Taxaz NSx *** * ** Planting depthy *** * *** * Taxa × planting depth NS NS NS NS ↵zFive taxa included Lagerstroemia indica x Lagerstroemia fauriei ‘Basham’s Party Pink’, Fraxinus pensylvanica, Nerium oleander ‘Cranberry Cooler’, Platanus occidentalis, and Vitex agnus-castus ‘LeCompte’.
↵yRoot collar placed at grade or 7.6 cm (3 in) above or below grade.
↵x*, **, ***, ns indicates statistical significance of the effect at P ≤ 0.05, P ≤ 0.01, P ≤ 0.001, or not significant, respectively.
- Table 3.
Effect of planting depth on the plant index of Nerium oleander ‘Cranberry Cooler’ grown for 3 years in a College Station, Texas, field site after transplant from 9.3 L (#3) black plastic containers.
Planting depthz (m3) Plant indexy Below grade 0.47 bx At grade 1.39 b Above grade 2.37 a ↵zRoot collar 7.6 cm (3 in) below grade, at grade, or 7.6 cm (3 in) above grade.
↵yHeight × diameter within row × diameter between rows representing a volumetric estimate of the canopy.
↵xMeans followed by the same letter are not significantly different (P ≤ 0.05) using least squares means comparisons. Values represent the means of six plants per planting depth.
- Table 4.
Main effect of planting depth on the adjusted relative growth of trunk cross-sectional area and trunk diameter of Fraxinus pensylvanica trees grown for 3 years in a field site in College Station, Texas, after transplant from 9.3 L (#3) black plastic containersz.
Planting depthy Trunk cross-sectional area Trunk diameter Year 2 (cm2 cm−2) Year 3 (cm2 cm−2) Year 2 (mm mm−2) Below grade 190 bx 258 b −0.07 b At grade 395 a 484 a 0.53 a Above grade 350 a 414 a 0.39 a ↵zAdjusted relative growth of trunk cross-sectional area and trunk diameter refers to the incremental growth during the year relative to the initial value of the parameter.
↵yRoot collar 7.6 cm (3 in) below grade, at grade, or 7.6 cm (3 in) above grade.
↵xMeans followed by the same letter are not significantly different (P ≤ 0.05) using least squares means comparisons. Values represent the means of six plants per planting depth.
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