bob polomski, ph.d. clemson extension horticulturist clemson university, south carolina

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Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina September 12, 2010 Emerging Issues in Arboriculture

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Emerging Issues in Arboriculture. Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina September 12, 2010. Emerging Issues in Arboriculture. Tree selection Production Planting Establishment - PowerPoint PPT Presentation

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Page 1: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Bob Polomski, Ph.D.Clemson Extension Horticulturist

Clemson University, South Carolina

September 12, 2010

Emerging Issues in Arboriculture

Page 2: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

http://hort.ufl.edu/woody/planting

Emerging Issues in Arboriculture

Tree selection Production Planting Establishment Urban soil management (“soil

restoration”

Plant Health Care

Page 3: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Selection The search for the perfect

landscape/street tree continues….        --evaluation of new species and cultivars

Page 4: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree SelectionBiomechanics: study of

the structural behavior of trees

Study branch failures Learn why some trees

stay upright in a storm while others fail;

Prune to prevent storm damage

Page 5: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Production Effects on successful

tree establishment and longevity    --evaluate container

types and container treatments to

reduce/ eliminate circling roots

Page 6: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting and establishmentAn estimated 80 percent of all landscape

tree problems originating below ground relate to quality and placement of the root system.  Structural root defects and root planting depth issues can occur during all stages of tree production and establishment including nursery propagation and production, landscape specification development and planting, and post‐planting and transplanting maintenance.  

Page 7: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Selection

Page 8: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Planting• Bare root

--Develop methods and products to use for bare-rooting trees at planting time (root washing, pressure washing, and air excavation)

Bassuk, N. L. 1998. Creating the urban forest: the bare root method. 1998. Urban Horticulture Institute Cornell University Ithaca, NY.

Page 9: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Planting Bare rooting--technique to reveal tree

roots prior to finishing the planting or transplanting process

Need to see root defects--if possible, correct and adjust planting height 

“Bare Root to Bare Root – Coming Full Circle” (www.mortonarb.org/deeptreeroots/pdf/LBG_Abstracts.pdf)

Page 10: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Planting Bare rooting--technique to reveal tree

roots prior to finishing the planting or transplanting process

Need to see root defects--if possible, correct and adjust planting height/depth. 

“Bare Root to Bare Root – Coming Full Circle” (www.mortonarb.org/deeptreeroots/pdf/LBG_Abstracts.pdf)

Page 11: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Planting Plant trees at the

proper depth--Deep roots of landscape trees: A comprehensive guide to current research and practice

(www.mortonarb.org/deeptrees)

Page 12: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting too deep is deadly

93% of professionally-planted trees (Smiley and Booth, 2000)

75% of nursery-grown trees (Maynard 1995)

Page 13: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Tree Planting Container-grown

--evaluate root pruning strategies: slicing, shaving, bare rooting, or butterflyingAlleviate root defects after planting and ensure survival and vigorous growth of trees after planting.

Page 14: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting and establishment Container-grown

--evaluate root pruning strategies: slicing, shaving, bare rooting, or butterflying

Page 15: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Post-planting survival and

establishment• New technologies to

improve post-plant survival and stress resistance in urban trees,e.g., biostimulants, humectants, mycorrhizae, etc.

Page 16: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Established Trees Urban soil management (“soil

restoration”)--Root Invigoration®

Page 17: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Established Trees Urban soil management (“soil

restoration”)--Root Invigoration®

Page 18: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Established Trees

Page 19: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting and Establishment Urban soil management (“soil

restoration”)--Root Invigoration®--Aerated Compost Tea (ACT)

www.masslaboratory.org/mass_015.htm

Page 20: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting and establishment Urban soil management (“soil

restoration”)--Root Invigoration®--Aerated Compost Tea (ACT)--Biochar – carbon-rich product (wood, manure, leaves) heated in absence of O2

Page 21: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Planting and establishment

http://abcnews.go.com/GMA/JustOneThing/video/green-plant-soil-biochar-11486209

Page 22: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Plant Health Care: Pests Emerald ash borer (Agrilus planipennis)

--Native of China and Eastern Asia--Michigan in 2002-13 states and parts of Canada

www.agri.ohio.gov/divs/plant/eab/eab-index.aspx

Page 23: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests EAB management

www.emeraldashborer.info/files/Multistate_EAB_Insecticide_Fact_Sheet.pdf

Page 24: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Walnut twig beetle and

thousand cankers disease of black walnut (Juglans nigra)—insect-disease complex

Geosmithia sp.Fusarium solani

Page 25: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Walnut twig beetle and

thousand cankers disease of black walnut (Juglans nigra)—insect-disease complex(Geosmithia sp. and Fusarium solani) 1990s Utah 2001 New Mexico

Page 26: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Walnut twig beetle and

thousand cankers disease--Black walnut decline

Page 27: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina
Page 28: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Asian long-horned

beetle (Anoplophora glabripennis)

--native to Japan, Korea, and China--1996 discovered in Brooklyn and Amityville, NY--Maples and horsechestnuts, also ash, poplar, willow, elm, mulberry, and black locust

Page 29: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Asian long-horned beetle

Page 30: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

PHC: Pests Asian long-horned beetle

Page 31: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Plant Health Care Novel disease control compounds to

reduce pesticide usage in the arboricultural industry:--“Biopesticides” - synthetic or natural compounds such as plants, microorganisms, and certain mineralscontrol pest and foliar diseases.

Page 32: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Arboricultural Research Research

More research

Even more research

Application

Page 33: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina
Page 34: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina
Page 35: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina
Page 36: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

“With great power…

Comes great responsibility.”

Page 37: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina

Only you can speak for trees.

Angel Oak, Charleston, SC

Page 38: Bob Polomski, Ph.D. Clemson Extension Horticulturist Clemson University, South Carolina