emerald ash borer homeowner management options
TRANSCRIPT
![Page 1: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/1.jpg)
Emerald Ash Borer Homeowner Management
OptionsFairfax County Urban Forest Management
Forest Pest Division
![Page 2: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/2.jpg)
Ash Tree Identification (Fraxinus sp.)
Ash (Fraxinus) Maples (Acer) Horse chestnut (Aesculus) Shrubs: Viburnum, Forsythia etc.
Hickories (Carya) Oaks (Quercus) Beech (Fagus) Tuliptree (Liriodendron) Sweet Gum (Liquidambar)
![Page 3: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/3.jpg)
Ash Tree Identification Compound leaf Fruit is single winged
samara
www.bugwood.org (Paul Wray, Michigan Dept. of Agriculture)
![Page 4: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/4.jpg)
Ash Tree Identification Diamond patterned bark Opposite branches
Stubby, blunt twigs
www.bugwood.org (Keith Kanoti)
![Page 5: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/5.jpg)
Emerald Ash Borer (EAB) Invasive wood-boring
beetle introduced from China/East Asia
Feeds on ash trees Discovered in
Michigan in 2002 Found in Virginia in
2003 and again in 2008
www.forestryimages.org (Linda Bauer, Debbie Miller)
![Page 7: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/7.jpg)
Signs Larvae burrow into
bark and feed on vascular tissueLeave winding
“galleries” where they have burrowed
Adults emerge through “D” shaped exit holes
www.forestryimages.org (Pennsylvania Department of Conservation and Natural Resources , David. R. McKay, David Cappaert)
![Page 8: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/8.jpg)
Symptoms Canopy dieback/thinning crown Epicormic sprouting
Growth from a previously dormant bud on the trunk or a limb of a tree
Woodpecker activity Bark splits
![Page 9: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/9.jpg)
Canopy Dieback/Epicormics
www.forestryimages.org (Linda Bauer, Daniel Herms)
![Page 10: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/10.jpg)
Bark Splits/Woodpecker Activity
www.forestryimages.org (Michigan Dept. of Agriculture)
![Page 11: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/11.jpg)
EAB Invasion Wave
http://extension.entm.purdue.edu/treecomputer/index.php?page=concepts/invasionWave.php§ion=2
Fairfax County
![Page 12: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/12.jpg)
www.goodtreecare.com
![Page 13: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/13.jpg)
Management Options for Ash Trees1. Remove ash trees that are unsafe as they
die2. Replace ash trees that were removed3. Treat the remaining healthy ash trees
Data was prepared using the Emerald Ash Borer Cost Calculator developed at Purdue University,http://extension.entm.purdue.edu/treecomputer/index.php
![Page 14: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/14.jpg)
Tree Removal High initial investment
Loss of tree benefits/ecosystem services(http://www.itreetools.org/design.php)○ Stormwater runoff prevention○ Shade (reduction of energy use)○ Aesthetics
Deeds or HOA covenants may require special exceptions or permission to remove a tree
○ These requirements will be listed in the property development plan
![Page 15: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/15.jpg)
Ash Removal
Photos courtesy: Rob Gorden, Arborjet Inc.
![Page 16: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/16.jpg)
Tree Replacement Replace dead ash trees with other
native tree species http://
www.fairfaxcounty.gov/dpwes/navbar/faqs/treecare.htm
Plant a variety of different speciesDiversity is a proactive approach to insects
or diseases that may emerge in the future
![Page 17: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/17.jpg)
Ash Replacement
![Page 18: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/18.jpg)
EAB Management Options Pesticide Treatment
Cost is dispersed over many yearsCan lessen pesticide application intensity after
beetle population decreasesOption to treat the ash tree so that it will
eventually be replaced with another species without the loss of ecosystem services
![Page 19: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/19.jpg)
Ash Protection/Treatment
![Page 20: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/20.jpg)
Available from www.emeraldashborer.infohttp://www.emeraldashborer.info/documents/Multistate_EAB_Insecticide_Fact_Sheet.pdf
![Page 21: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/21.jpg)
Pesticide Treatment Timing Trees must be actively respiring (must
have leaves) Kill larvae under the bark of the tree Kill female adults before eggs are
producedFemale adults have to
feed on foliage for two weeks before they produce and lay eggs
![Page 22: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/22.jpg)
15% of crown is dead
Treatable Ash Tree
![Page 23: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/23.jpg)
Treatable Ash Tree
Photo courtesy of: Donna Brok http://gardenwalkgardentalk.com/2014/07/01/emerald-ash-borer-a-first-hand-look/
40% of crown is dead
![Page 24: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/24.jpg)
Untreatable Ash Tree
Photo: Eric R. Day, www.bugwood.org
>50% of crown is dead
![Page 25: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/25.jpg)
EAB Homeowner Treatment Must be applied every year in mid-Spring Not effective for trees >20-25”
Dinotefuran requires more product for trees >15”
Insecticide Description ApplicationMethod
Dinotefuran Granular Soil
Imidacloprid 2x Soil drench
Soil**Can’t apply near water sources or
streams
![Page 26: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/26.jpg)
EAB Professional TreatmentInsecticide Application
Method Advantage Disadvantage
Dinotefuran Bark spray, soil injection
Very water soluble
Less effective at high EAB density
Can apply later in the
yearNeed higher dose
for large trees
Imidacloprid 2x
Soil drench, trunk injection
Inexpensive Less effective at high EAB density
Readily available
Takes 4-6 weeks to take effect
Emamectin Benzoate (TreeAge)
Trunk injectionVery good
control at all EAB infestation
stagesExpensive
Azadirachtin (TreeAzin) Trunk injection Certified for
Organic useExpensive;
Only reduces fecundity of adults
![Page 27: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/27.jpg)
Pesticide Injection (Tree-äge)
![Page 28: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/28.jpg)
Example Scenario 50 ash trees along street Majority of trees approximately 12-18”
diameter Various stages of EAB infestation
Thin foliageDead branchesCanopy dieback
![Page 29: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/29.jpg)
Example Scenario Costs
Data was prepared using the Emerald Ash Borer Cost Calculator developed at Purdue University,http://extension.entm.purdue.edu/treecomputer/index.php
Treatment Initial Cost Year 4 25 year cumulative
Removal $1,361 $26,958 $29,643
Replacement $2,870 $43,360 $48,079
PesticideTreatment(Tree-Äge)*
$7,023 $24,252 $32,695
*Price may not include labor
![Page 30: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/30.jpg)
Yearly Cost Comparison
![Page 31: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/31.jpg)
Cumulative Cost Comparison
![Page 32: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/32.jpg)
Pesticide Treatment Considerations
We are approaching the near peak of emerald ash borer pest pressure
Recommend to treat with TreeAge injections during this stressful periodMay switch to other, less costly products after
![Page 33: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/33.jpg)
Summary Ash trees left untreated WILL die and will
have to be removed eventually Pesticide treatment must be done regularly
in order to protect the tree over time Get quotes from several tree care
companies before you decide on a treatment
If you choose to replant, select diverse, native tree species
![Page 34: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/34.jpg)
Additional Resources http://www.fairfaxcounty.gov/dpwes/envir
onmental/forest_pest.htm http://
extension.entm.purdue.edu/EAB/PDF/TreeCondition.pdf
http://extension.entm.purdue.edu/EAB/ www.emeraldashborer.info http://www.itreetools.org/design.php
![Page 35: Emerald Ash Borer Homeowner Management Options](https://reader035.vdocuments.us/reader035/viewer/2022062822/588150b11a28abb0508b5f67/html5/thumbnails/35.jpg)
For more information, please contact:Fairfax County Urban Forest Management Division:
Forest Pest Management Branch703-324-5304, TTY 711
[email protected] Fairfax County Publication March 2016