For those who will not be in Columbus for TCI Expo, here's info aobut a workshop in Chicago. It is encouraging to see the academics involved in research that may get the nurseries to stop screwing up baby trees.
GETTING THE ROOTS RIGHT
A Professional Seminar for the Green Industry at the Morton Arboretum
Thursday, November 10, 2005, 8:30 am – 4:30 pm
Depth of tree root systems continues to be a controversial subject of concern in the green industry. Researchers from across the country have joined forces in an effort to solve these problems. Join us for an overview of current research on how planting depth, root architecture, nursery production, species characteristics each contribute.
"A Survey of the Planting Depths in Ohio Nursery Trees"
Davis Sydnor and Richard Rathjens, The Ohio State University
A survey of nine Ohio commercial tree nurseries revealed more difference between nurseries than between propagation methods. Hear the results of production surveys for trees in the first and third year of production, as well as those grown from budding, cuttings, and seed.
Nursery Tree Depth Projects
Douglas Airhart, Professor, School of Agriculture, Tennessee Tech University
When selecting trees, a customer should be aware of the potential that excess soil will be present over the structural root system, and be able to determine the depth of planting, before leaving the nursery or garden center. This presentation will demonstrate the variation of soil depths on trees from twenty wholesale and retail nurseries.
Effects of Planting Depth on Tree Performance in the Landscape
Christina Wells, Assistant Professor of Horticulture, Clemson University
Deep planting, by as little as six inches, has serious consequences for the survival of Yoshino cherries in the short term, and girdling root development of red maples in the long term. These results are consistent with arborists' observations that deep planting predisposes trees to transplant failure.
The Effects of Soil Depth on the Long-Term Health and Frequency
of Storm Damage to Trees in the Upper Midwest.
David Hanson, University of Minnesota, representing the "Root Gang of Five,"Rresearch Team (Chad Giblin, Jeff Gillman, Dave Hanson, Gary R. Johnson, Patrick Weicherding).
This very active group of researchers have been studying the effects of soil over the root systems of landscape trees species by species over the past 12 years. Some species can tolerate little or no soil over the lateral roots. The root system response to planting too deep can lead to long-term problems including predisposition to environmental stresses and biotic invaders, and dysfunctional root systems.
Planting Depth and Cultural Practices
Mike Arnold, Texas A & M University
Cultural practices, post-transplanting, influences the woody plant response to planting depth. Growth responses of several species transplanted with the root collar located above, at, or below grade relative to its original location on container-grown trees will be discussed. Tree response to cultural practices such as soil manipulations and mulch applications will be presented.
Buried trunks:
How Deep Planting Affects Trunk Tissue, Adventitious Rooting, and Tree Growth
Susan D. Day,( Presenting) and J. Roger Harris, Virginia Tech University
A summary of ongoing research at Virginia Tech, studying the effects of deep planting on trees. Projects include documenting the effects of flooding and root collar excavations on deeply planted trees, the results of long-term contact of trunk tissue with soil, and new studies looking at the contribution of adventitious roots to tree health when deeply planted. Species in these studies include: Acer rubrum, Quercus rubra, Q. alba, Liquidambar styraciflua, and Corylus colurna.
Should Potting Depth Be A Concern with Container Grown Trees?
Donna C. Fare, US National Arboretum, USDA-ARS Nursery Research Center
Learn the impact of planting depth on container plants in this study of bare root liners. Bare root liners of ‘Green Vase’ zelkova, ‘Autumn Brilliance serviceberry, ‘Autumn Flame’ and ‘Brandywine’ red maples were potted at a variety of depths and measured through two seasons. The results suggest specific methods to create favorable plant responses.
Distinguishing Between Root System Architecture Changes and Planting Too Deep
Gary Watson, The Morton Arboretum
Root pruning is not a natural process. When roots are cut it can initiate both temporary and permanent changes in root architecture. Changes in root architecture are often misinterpreted as planting too deep. By the time a tree gets through the nursery production process and into the landscape, the root system may be far different than its cousin in the nearby woodland.
Planting Depth and the Growth Of Nursery Trees
Mark Jarecki, Dave Williams and Gary Kling, University of Illinois
Growers have increasingly been planting nursery liners too deep for reasons that may include hiding the bud graft and minimizing the need for staking. The effects of deep planting may be modest in high quality nursery soils, but more severe problems may show up when the trees are transplanted to the landscape.
Nursery and Landscape Planting Depth Experiences in Florida
P. Anderson, Presenting, Research by E.F. Gilman and P. Anderson, University of Florida
The influence of planting depth and finished planting appears to affect plant growth and root distribution, and adventitious rooting occurs in only some plants. Hear the results of studies that track plants in nursery settings and after they have been installed in the landscape.
Root Collar Excavations to improve tree health
E.Thomas Smiley, Bartlett Tree Root Laboratories
Many trees already planted in the landscape, some decades ago, are too deep. Experience with hundreds of trees has shown that removing soil over the roots at the base of the tree can improve tree health. More arborists may want to offer this procedure to their clients.
REGISTRATION (includes all seminar materials, lunch, and break refreshments)
Registration fee $139 (Arboretum members $119),
ILCA 6 CEUs; APLD x CEUs; INA 1 CEU; ISA 7 CEU
GETTING THE ROOTS RIGHT
A Professional Seminar for the Green Industry at the Morton Arboretum
Thursday, November 10, 2005, 8:30 am – 4:30 pm
Depth of tree root systems continues to be a controversial subject of concern in the green industry. Researchers from across the country have joined forces in an effort to solve these problems. Join us for an overview of current research on how planting depth, root architecture, nursery production, species characteristics each contribute.
"A Survey of the Planting Depths in Ohio Nursery Trees"
Davis Sydnor and Richard Rathjens, The Ohio State University
A survey of nine Ohio commercial tree nurseries revealed more difference between nurseries than between propagation methods. Hear the results of production surveys for trees in the first and third year of production, as well as those grown from budding, cuttings, and seed.
Nursery Tree Depth Projects
Douglas Airhart, Professor, School of Agriculture, Tennessee Tech University
When selecting trees, a customer should be aware of the potential that excess soil will be present over the structural root system, and be able to determine the depth of planting, before leaving the nursery or garden center. This presentation will demonstrate the variation of soil depths on trees from twenty wholesale and retail nurseries.
Effects of Planting Depth on Tree Performance in the Landscape
Christina Wells, Assistant Professor of Horticulture, Clemson University
Deep planting, by as little as six inches, has serious consequences for the survival of Yoshino cherries in the short term, and girdling root development of red maples in the long term. These results are consistent with arborists' observations that deep planting predisposes trees to transplant failure.
The Effects of Soil Depth on the Long-Term Health and Frequency
of Storm Damage to Trees in the Upper Midwest.
David Hanson, University of Minnesota, representing the "Root Gang of Five,"Rresearch Team (Chad Giblin, Jeff Gillman, Dave Hanson, Gary R. Johnson, Patrick Weicherding).
This very active group of researchers have been studying the effects of soil over the root systems of landscape trees species by species over the past 12 years. Some species can tolerate little or no soil over the lateral roots. The root system response to planting too deep can lead to long-term problems including predisposition to environmental stresses and biotic invaders, and dysfunctional root systems.
Planting Depth and Cultural Practices
Mike Arnold, Texas A & M University
Cultural practices, post-transplanting, influences the woody plant response to planting depth. Growth responses of several species transplanted with the root collar located above, at, or below grade relative to its original location on container-grown trees will be discussed. Tree response to cultural practices such as soil manipulations and mulch applications will be presented.
Buried trunks:
How Deep Planting Affects Trunk Tissue, Adventitious Rooting, and Tree Growth
Susan D. Day,( Presenting) and J. Roger Harris, Virginia Tech University
A summary of ongoing research at Virginia Tech, studying the effects of deep planting on trees. Projects include documenting the effects of flooding and root collar excavations on deeply planted trees, the results of long-term contact of trunk tissue with soil, and new studies looking at the contribution of adventitious roots to tree health when deeply planted. Species in these studies include: Acer rubrum, Quercus rubra, Q. alba, Liquidambar styraciflua, and Corylus colurna.
Should Potting Depth Be A Concern with Container Grown Trees?
Donna C. Fare, US National Arboretum, USDA-ARS Nursery Research Center
Learn the impact of planting depth on container plants in this study of bare root liners. Bare root liners of ‘Green Vase’ zelkova, ‘Autumn Brilliance serviceberry, ‘Autumn Flame’ and ‘Brandywine’ red maples were potted at a variety of depths and measured through two seasons. The results suggest specific methods to create favorable plant responses.
Distinguishing Between Root System Architecture Changes and Planting Too Deep
Gary Watson, The Morton Arboretum
Root pruning is not a natural process. When roots are cut it can initiate both temporary and permanent changes in root architecture. Changes in root architecture are often misinterpreted as planting too deep. By the time a tree gets through the nursery production process and into the landscape, the root system may be far different than its cousin in the nearby woodland.
Planting Depth and the Growth Of Nursery Trees
Mark Jarecki, Dave Williams and Gary Kling, University of Illinois
Growers have increasingly been planting nursery liners too deep for reasons that may include hiding the bud graft and minimizing the need for staking. The effects of deep planting may be modest in high quality nursery soils, but more severe problems may show up when the trees are transplanted to the landscape.
Nursery and Landscape Planting Depth Experiences in Florida
P. Anderson, Presenting, Research by E.F. Gilman and P. Anderson, University of Florida
The influence of planting depth and finished planting appears to affect plant growth and root distribution, and adventitious rooting occurs in only some plants. Hear the results of studies that track plants in nursery settings and after they have been installed in the landscape.
Root Collar Excavations to improve tree health
E.Thomas Smiley, Bartlett Tree Root Laboratories
Many trees already planted in the landscape, some decades ago, are too deep. Experience with hundreds of trees has shown that removing soil over the roots at the base of the tree can improve tree health. More arborists may want to offer this procedure to their clients.
REGISTRATION (includes all seminar materials, lunch, and break refreshments)
Registration fee $139 (Arboretum members $119),
ILCA 6 CEUs; APLD x CEUs; INA 1 CEU; ISA 7 CEU
