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NPDN Governance Committee Report NPDN Regional Network Meeting Notes |
NPDN National Meeting 2007 Poster Abstract Authors: JOHN H. BOWERS, Richard A. Bean, Carol A. Holko, Gaye L. Williams Affiliations: Maryland Department of Agriculture, Plant Protection & Weed Management, 50 Harry S. Truman Parkway, Annapolis, Maryland 21401 Emerald ash borer (EAB) is an exotic pest of ash trees. It is native to Asia and first detected in the Detroit, MI area in July 2002. More than 20 million ash trees have died in Michigan, Ohio, and Indiana as a result of EAB. In spring 2003, a Maryland nursery received infested ash trees shipped illegally from Michigan. Actively feeding larvae were found in both nursery and outplanted trees. All ash trees in the nursery and in a 0.5-mile buffer around the nursery were destroyed. Sentinel trees were planted in and around the buffer area in the spring of 2004-06, harvested each fall, and the bark stripped to look for larval galleries. No signs of EAB were found in 2004 or 2005. In 2006, one sentinel tree planted in the buffer area was found to be infested with three larvae. Also, two native ash trees outside the buffer area were found to contain numerous larvae and galleries. A Quarantine Order was issued restricting movement of ash trees and all hardwood firewood in the affected county. Survey teams have since identified trees with emergence holes outside the 2003 eradication zone. The survey zone has been expanded to encompass a 2.0-mile radius around positive trees. An ash inventory and survey is in progress, and all ash trees within a 1.5-mile buffer will be eradicated.View Poster
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