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Release and Dispersal of
Laricobius nigrinus in NW NJ and NE PA
Mark Mayer - NJDARosa Yoo - NJFS
Phillip Alampi Beneficial Insect Laboratoryhttp://www.nj.gov/agriculture/divisions/pi/prog/biological.html
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Sistens Winter Mortality in NJ
Winter2013-2014
2014-2015
2015-2016
Average Sistens Mortality
95.1% 99.1% 88.4%
Hwa in small clumps when found; on single branches
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LN Releases 2005 - 2010
Overall 10,991 LN Released by NJDA3,457 LN Released by NPS
Beetles from Va. Tech.and Dick McDonald via Brad Onken
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LN Dispersal Through 2016(Fall Adult and Spring Larval Survey)
17 recovery sites in 2016, 8 new, 4 in PA and 4 in NJ167 sites total (2012 to 2016)
The dispersal area extends 35 miles north to south and 49 miles east to west.
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LN Adult and Larval Recovery• FALL 2015 – 15 adult beetles• Spring 2016 – 8 adult beetles, 69 larvae
– Larvae and adults were scattered as was the HWA population
• HWA population is low so there is not much to collect.
• Some areas in PA and NJ have potential as collecting sites if we ever get a HWA population back, (DEWA NPS HQ, Camelback Mt., Montclair State Univ. School of Conservation)
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LN Efficacy StudyDEWA – J. Elkinton
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NJ Champion Hemlock
Tre
Treated summer
2015
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AcknowledgementsUSDA-Forest Service
Brad Onken (ret.) and Noel Schneeberger
Virginia TechScott Salom and Carrie Jubb for the LN
PA-DCNRDon Eggen, Houping Liu and Tim Marasco
Maryland Department of AgricultureBiff Thompson
Symbiont Biological Pest ManagementRichard McDonald
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New Jersey Forest Service
Rosa YooForest Health Program
Hemlock Woolly Adelgid Program Managers Meeting 2nd Annual Meeting July 26-28, 2015 Ithaca, NY
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Hemlock Woolly Adelgid Treatment(Adelges tsugae Annand)
0
50
100
150
200
250
2011 2012 2013 2014 2015 2016
# Tr
ees
Year
NJ HWA Treatments2011-2016
Soil Injection
Trunk Injection
Soil Drench
Bark Spray
Tablets
Total
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Hemlock Coverages
Hired a GIS Specialist- Updating
the statewide hemlock coverage
- Cooperating with NJDA
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Hemlock Woolly Adelgid(Adelges tsugae Annand)
Hemlock Cone Collection –Fall 2016
Possible foliage collection method?
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Rosa Yoo 609-984-3861 [email protected] Regional Forester
Thank YouMark Mayer 609-530-4192 [email protected] Entomologist