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Comparing Root Balls on Laurel Oak Transplanted from the Wild with Those of Nursery and Container Grown Trees

Edward R. Gilman, Richard C. Beeson and Robert J. Black
Arboriculture & Urban Forestry (AUF) May 1992, 18 (3) 124-129; DOI: https://doi.org/10.48044/jauf.1992.028

Article Figures & Data

Figures

  • Figure 1.
    Figure 1.

    Root system Inside the root ball of trees collected from the wild was dominated by a single tap root. Large, horizontal lateral roots and fine roots grew from the tap root close to the surface of the soil.

  • Figure 2.
    Figure 2.

    Root system inside the root ball of field-grown nursery trees showing a large number of horizontal lateral roots and some nearly vertical deep roots. Fine roots are located at the top right hand side of the root ball.

  • Figure 3.
    Figure 3.

    Root system inside the root ball of trees grown in fabric containers. Roots are oriented horizontally and fine roots are in the top portion of the root ball. The dense mass of tangled roots in the center of the root ball represents those roots which were growing inside the 3.8-liter container before the tree was planted in the nursery.

Tables

  • Table 1.

    Height, caliper, trunk and shoot weight, and weight of roots inside rootball for wild, nursery- and fabric-container-grown laurel oak.z

    MeasurementCollected wildNursery grownFabric container-grown
    Height (m)3.66aw3.62a3.54a
    Trunk caliper (cm)y4.4a5.6a5.3a
    Trunk and shoot
    dry weight (g)x2548a5889b3752ab
    Dry weight of roots
    within root ball (g)674a1279b1269b
    Shoot:root dry
    weight ratio3.78a4.60a2.95a

    • zEach value in the table is the mean of 5 trees.

    • ↵yCaliper measured at 15 cm from soil line.

    • ↵xTotal of trunk, shoots, branches and leaves.

    • wMeans in a row followed by the different letters are significantly different from each other by Duncan’s Multiple Range Test, p<0.05.

  • Table 2.

    Number of roots and root cross-sectional area within root diameter classes at the perimeter of root balls from wild, nursery- and fabric-container-grown laurel oak.z

    Root diameter class (mm)Number of rootsCross-sectional area (cm2)y
    Collected wildNursery grownFabric containerCollected wildNursery grownFabric container grown
     >5-105.4ax15.6b16.4b2.2a6.6b7.5b
    >10-155.04.87.65.15.98.0
    >15-201.42.02.03.04.44.3
    >20 - 250.80.20.83.00.72.6
    >25 - 30000000
    >300.20.401.82.30

    • zEach value in the Table is the mean of 5 trees.

    • ↵ySum of cross-sectional area at the perimeter of the root ball of roots in each root diameter class.

    • ↵xMeans in a row followed by different letters are significantly different fromeach other by Duncan’s Multiple Range Test, p < 0.05. There were no differences among treatments in any other root-diameter classes.

  • Table 3.

    Weight of roots inside root ball within root diameter classes for wild, nursery- and fabric-container-grown laurel oak.

    Root diameter class (mm)Root dry weight (g)z
    Collected wildNursery-grownFabric container-grown
    0-15.3ay7.2b8.3b
    >1 -25.4a7.3b7.1b
    >2-514.6a36.8b39.1b
    >5-1045.9a103.7b92.0b
    >10602.9a1124.7b1122.9b

    • ↵zEach value in the Table is the mean of 5 trees.

    • yMeans in a row followed by the same letter are not significantly different from each other by Duncan’s Multiple Range Test, p<0.05.

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Comparing Root Balls on Laurel Oak Transplanted from the Wild with Those of Nursery and Container Grown Trees
Edward R. Gilman, Richard C. Beeson, Robert J. Black
Arboriculture & Urban Forestry (AUF) May 1992, 18 (3) 124-129; DOI: 10.48044/jauf.1992.028
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