Article Figures & Data
Figures
- Figure 1.
Three growing seasons after the experiment was installed, the roots of each southwestern black cherry tree were excavated in 1 m3 volume of soil, 32 cm deep in an area within 1 m radius of the trunk.
- Figure 2.
Dry weight of excavated western black cherry roots for each of the four rootball depthcasing combinations: A, means, based on 17 replications for the 35 cm rootballs without casings and 18 replications for each of the other three treatment combinations; brackets above each column represent one standard error of that mean (SEM); B, percentages of the total means for each of three root diameter classes.
- Figure 3.
Exposed roots of the western black cherry trees within the excavation pits of Block 8 characterize the general visual differences among the four factorial treatments: top row 35-cm rootballs; bottom row, 70-cm rootballs; left column, rootballs without casing; right column, rootballs with casing.
- Figure 4.
Dry weights of the excavated roots of each western black cherry tree in each of the four rootball-casing combinations in the experiment.
- Figure 5.
The root system of this tree (70-cm rootball-casing combination) was further excavated to a total depth of 1 m, exposing the numerous roots below the 32-cm depth (indicated by the horizontal white mark near bottom of rootball casing) of the initial excavation pit.
- Figure 6.
Simultaneous 95% confidence intervals, with Bonferroni adjustment, for trunk diameters based on pooled standard deviations for southwestern black cherry trees for each of four factorial treatment combinations (a1b1, 35-cm rootball without casing; a1b2, 35-cm rootball with casing; a2b1, 70-cm rootball without casing; a2b2 70-cm rootball with casing) at the end of growing seasons 1986,1987, and 1988.
Tables
- Table 1.
Mean sums of diameters of roots emerging from below the 32-cm soil depth (depth of the excavated pits) on rootballs of a 7-block subset of southwestern black cherry trees for each of the four factorial treatments.1
Factorial treatment n Mean sums of diameters of roots at depth increments of 10 cm Root-ball depth (cm) Root-ball casing 32-42 42-52 52-62 62-72 Total — — — — — — — —(cm)— — — — — — — — 35 Without 7 35.7 35.7 35 With 7 50.1 50.1 70 Without 7 17.7 19.7 5.7 6.3 49.4 70 With 7 15.6 20.2 13.2 1.0 49.9 ↵1 Means for variables have not been statistically analyzed because the data are from non-random trees.
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