Browsing by Subject "Stem Girdling Roots"

Now showing 1 - 3 of 3
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    Buried Root Systems: Their association with stem encircling and girdling roots, and relationship with tree condition
    (2004-09-05) Hanson, Dave
    This study examines buried root systems among street trees surveyed in three Minnesotan cities. Buried root systems can cause tree roots to encircle, girdle a tree stem, cutting off vital nutrients to the tree canopy and causing the tree to decline, die. Results of this study will help arborists and urban foresters better understand the association between the depth of soil over a tree’s first lateral root and frequency of these encircling, girdling root systems.
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    Research Summary on a Long-Term Planting Depth Study
    (2007-09-05) Hanson, Dave
    The focus of this study is to determine how quickly stem encircling (SERs) or stem girdling roots (SGRs) occur, and to determine what (if any) relationships exist between planting depth and suckering, SERs, SGRs, or growth rates. While there are some interesting trends, few solid conclusions can be drawn from the data collected thus far.
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    Stem Girdling Roots: The Underground Epidemic Killing our Trees
    (2021) Johnson, Gary; Fallon, Dennis
    In partnership with Xcel Energy and the USFS, the University of Minnesota Urban Forestry Outreach and Research lab produced this report which details the importance of diagnosing, preventing and correcting stem girdling roots. Stem girdling roots (SGRs) are dysfunctional root systems that grow against a tree's stem, compressing the sapwood and preventing vital nutrients from being delivered to and from the roots. This report details the negative consequences of SGRs for the health of the tree, safety of the community, as well as the economic and emotional losses of tree fatalities resulting from this preventable condition.