Adams, Juneau, Buffalo Counties Face EAB Quarantines
August 6, 2014
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MADISON – Emerald ash borer has been confirmed in Adams County
for the first time, triggering a quarantine in that county and in neighboring
Juneau County. Buffalo County will also be quarantined, because an EAB
infestation has been found at Merrick State Park. This brings the total number
of Wisconsin counties under quarantine to 32.
An adult EAB beetle was found in one of the familiar purple
traps July 22 in the Town of Monroe in Adams County, along Lake Petenwell,
which is the border between Adams and Juneau counties. Juneau County is now
surrounded on three sides by counties where EAB has been confirmed, and it is
highly likely that the pest is also present there, says Brian Kuhn, director of
the Bureau of Plant Industry in the Wisconsin Department of Agriculture, Trade
and Consumer Protection.
“Low-level EAB infestations often go undetected for several
years,” Kuhn said. “This new find is within two miles of Juneau County, and EAB
can spread up to two miles a year on its own, even without help from humans. If
EAB is not already in Juneau County, it likely will be soon.”
In Buffalo County, an adult beetle was found in a purple trap
placed between the boat landing and the nature center in the state park. The
trap was placed near ash trees showing signs of infestation.
The quarantines will be put in place temporarily by a Wisconsin
emergency rule, until the U.S. Department of Agriculture completes the process
to enact a federal quarantine. The quarantines will apply to the entire
Quarantines prohibit ash wood products and hardwood firewood from
being moved to areas that are not quarantined. For businesses handling wood
products that could carry EAB, this means that they must work with DATCP to
assure that their products are pest-free before shipping to non-quarantine
counties. For private citizens, a quarantine means that neither residents nor
tourists may take firewood from these counties to non-quarantine counties.
recommends that property owners who have ash trees in quarantine counties:
Keep a close watch for possible signs of EAB
infestation: Thinning canopy, D-shaped
holes in the bark, cracked bark, branches sprouting low on the trunk, and woodpeckers
pulling at bark.
Consider preventive treatments if your property
is within 15 miles of a known infestation.
Consider planting different species of trees
that are not susceptible to EAB.
Call a professional arborist, and visit emeraldashborer.wi.gov
for detailed information.
Emerald ash borer is native to China and probably entered the
United States on packing material, showing up first in Michigan about 10 years
ago. It was first found in Wisconsin in 2008 in Ozaukee County. Other
quarantined Wisconsin counties are Brown,
Columbia, Crawford, Dane, Dodge, Door, Douglas, Fond du Lac, Grant, Green,
Iowa, Jefferson, Kenosha, La Crosse, Lafayette, Milwaukee, Monroe, Ozaukee,
Racine, Richland, Rock, Sauk, Sheboygan, Trempealeau, Vernon, Walworth,
Washington, Waukesha and Winnebago.
lay eggs on the bark of ash trees in mid- to late summer. When the eggs hatch a
week or two later, the larvae burrow under the bark for the winter and feed, forming
the characteristic S-shaped tunnels and destroying the tree's ability to take
up nutrients and water. In summer, the adults emerge through D-shaped holes in
Emerald Ash Borer Program includes partners from DATCP, DNR, UW-Madison,
UW-Extension, USDA Forest Service and USDA Animal and Plant Health Inspection
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