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EAB Distribution. EAB Distribution. EAB Distribution. EAB Distribution. Nodine – est. 6-7 years old at discovery. 5-10% of ash in area were dead Most of rest had noticeable decline. Nodine – est. 6-7 years old at discovery. > 100 larval galleries / square meter of bark
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Nodine – est. 6-7 years old at discovery • 5-10% of ash in area were dead • Most of rest had noticeable decline
Nodine – est. 6-7 years old at discovery • > 100 larval galleries / square meter of bark • Lots of woodpecking
Fort Snelling G.C. - est. 4-5 years old at discovery • A few trees in area were dead • ~20% had noticeable canopy decline • EAB trees masked by native borer activity
Fort Snelling G.C. - est. 4-5 years old at discovery • Many trees with decline and native borers present • Tree at right looks suspect for EAB, but is infested with native borers
St Paul – Found in 2009, ~4 years old at discovery • No dead trees • Canopy thinning on ~50 trees
St Paul – Found in 2009, ~4 years old at discovery • Woodpecking key to picking out suspect trees
Summit / Dale – Found in 2011, ~4 years old at discovery • Decline, woodpecking, bark cracks on < 10 trees
Shoreview – Found in 2011, ~3 years old at discovery • Decline in one tree initially • No woodpecking seen in July • Heavy woodpecking by November
Wildlife Refuge – Houston County • Houston • Estimate 3 years old when found in 2010 • Only found due to extensive searching
EAB Quarantine • No Regulated Articles are legally allowed to move outside of a quarantine (untreated or treated), unless they are accompanied by a certificate. Certificates are only available when a compliance agreement is signed between the Minnesota Department of Agriculture and the firm interested in moving the regulated article.
EAB Quarantine • Regulated Articles • Emerald ash borer in any living stage of development • Ash trees • Ash limbs / branches • Ash stumps and roots • Ash logs • Ash chips (wood or bark) • Firewood of any non-coniferous species
EAB Quarantine NO Maybe OK
EAB Management • Sanitation • Chemicals • Biological Control
EAB Management This is a hypothetical example of how EAB population increase and resulting tree mortality may occur.
EAB Sanitation • Identify suspect EAB infested trees via woodpecking • Remove infested trees prior to adult emergence
Spathius agrili J. Plunkett
Tetrastichus planipennisi J. Lelito