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Research ArticleArticles

Performance Testing Tree Cultivars in Metropolitan Environments

Henry D. Gerhold and W. Donald Bartoe II
Arboriculture & Urban Forestry (AUF) December 1976, 2 (12) 221-227; DOI: https://doi.org/10.48044/jauf.1976.055
Henry D. Gerhold
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W. Donald Bartoe II
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  • Figure 1.
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    Figure 1.

    Severe chlorosis In pin oak resulted from planting a good tree on the wrong site; Information from performance tests can assist arborists In making the proper choice, and thus to avoid such problems.

  • Figure 2.
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    Figure 2.

    Certain cultivars, such as these Greenspire lindens, can provide amenities even under adverse urban conditions. Objective performance data would help in selecting the best cultivars for particular planting locations.

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    Table 1.

    Three options for test plantings in which two cultivars are compared.

    ABC
    No. plots (locations in city)44 × 2a6 × 2a
    No. cultivars in each plot211
    No. trees in each plot2×3b53
    No. trees per cultivar122018
    Total number of trees244036
    • ↵aIf there are two kindsess districts, cultivars should be equally divided between them, and randomly assigned to plots.

    • ↵bplanting in pairs, one tree from each cultivar, is preferable.

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    Table 2.

    An arborist’s work in testing four cultivars in a single series of plantings.

    YearWorkHours
    1Map and measure 80 trees (4 cultivars × 4 plots × 5 trees each)7
    4Measure 76 trees (4 died)9
    8Measure 74 trees9
    12Measure 72 trees9
    16Measure 70 trees9
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    Table 3.

    An arborist’s plan for testing 48 cultivars, 4 planted annually for 12 years.

    YearNumber of trees planted per yearHours of work per year
    1-4807
    5-88016
    9-128025
    13-16027
    17-20027
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Arboriculture & Urban Forestry (AUF)
Vol. 2, Issue 12
December 1976
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Performance Testing Tree Cultivars in Metropolitan Environments
Henry D. Gerhold, W. Donald Bartoe
Arboriculture & Urban Forestry (AUF) Dec 1976, 2 (12) 221-227; DOI: 10.48044/jauf.1976.055

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Performance Testing Tree Cultivars in Metropolitan Environments
Henry D. Gerhold, W. Donald Bartoe
Arboriculture & Urban Forestry (AUF) Dec 1976, 2 (12) 221-227; DOI: 10.48044/jauf.1976.055
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  • Article
    • Abstract
    • Introduction
    • Current Methods of Testing
    • Improvement of Performance Testing
    • Proposed Performance Test System
    • Feasibility of Proposed Test Program
    • Conclusion
    • Footnotes
    • Literature Cited
  • Figures & Data
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