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Research ArticleArticles

Effects of Paclobutrazol on Royal Palm (Roystonea regia) Trunk and Height Growth

A.D. Ali and Shawn C. Bernick
Arboriculture & Urban Forestry (AUF) September 2010, 36 (5) 221-223; DOI: https://doi.org/10.48044/jauf.2010.029
A.D. Ali
A.D. Ali (corresponding author), Technical Advisor, Davey Institute, The Davey Tree Expert Company, 17140 Oak Creek Road, Alva, FL 33920, U.S.,
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  • For correspondence: [email protected]
Shawn C. Bernick
Shawn C. Bernick, Director of Research and Technical Support, Rainbow Treecare Scientific Advancements, 11571 K-tel Drive, Minnetonka, MN 55343, U.S.
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    Table 1.

    Effects of paclobutrazol basal drench on mature Royal Palm lateral trunk growth, Naples, FL, 2007–2010.

    TreatmentTrunk Diameter at Breast Height (cm)z
    2007 (Pretreatment)200820092010
    Paclobutrazol single application41.4 a41.4 a41.4 a41.4 a
    Paclobutrazol annually35.6 a35.6 a35.6 a35.6 a
    Untreated check43.9 a43.9 a44.2 a44.2 a
    • ↵zWithin rows, means followed by the same letter are not significantly different (P > 0.05) as determined by Student-Neuman-Keuls test.

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    Table 2.

    Effects of paclobutrazol basal drench on mature Royal Palm vertical growth, Naples, FL, 2007–2010

    TreatmentVertical Growth (cm)z
    2008 (12 MAT)y2009 (24 MAT)2010 (36 MAT)
    Paclobutrazol single application13.7 a24.4 ab29.0 b
    Paclobutrazol annually15.2 a15.2 b18.3 b
    Untreated check24.3 a42.7 a51.8 a
    • zMeasurement of the difference between height during the indicated year less the initial height in 2007 (pretreatment). Within columns, means followed by the same letter are not significantly different (P > 0.05) as determined by Student-Neuman-Keuls test.

    • ↵yMonths After Treatment.

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Arboriculture & Urban Forestry (AUF): 36 (5)
Arboriculture & Urban Forestry (AUF)
Vol. 36, Issue 5
September 2010
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Effects of Paclobutrazol on Royal Palm (Roystonea regia) Trunk and Height Growth
A.D. Ali, Shawn C. Bernick
Arboriculture & Urban Forestry (AUF) Sep 2010, 36 (5) 221-223; DOI: 10.48044/jauf.2010.029

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Effects of Paclobutrazol on Royal Palm (Roystonea regia) Trunk and Height Growth
A.D. Ali, Shawn C. Bernick
Arboriculture & Urban Forestry (AUF) Sep 2010, 36 (5) 221-223; DOI: 10.48044/jauf.2010.029
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Keywords

  • Growth
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  • Paclobturazol
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  • Roystonea regia

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