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11-12-13-WS
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11-12-13-WS
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<br />Emerald Ash Borer Management Plan <br />Background <br />Emerald ash borer (EAB), Agrilus planipennisFairmaire, is an exotic beetle that was discovered <br />in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash <br />foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash <br />trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably <br />arrived in the United States on solid wood packing material carried in cargo ships or airplanes <br />originating in its native Asia. Without any natural predators or controls in North America the <br />insect has spread to 13 states and two Canadian provinces. <br />EAB adults can fly at least a half mile from the tree when they emerge. However, new <br />infestations are most often created when people transport infested nursery ash trees, logs or <br />firewood into uninfested areas. Transportation of firewood has been regulated to reduce the <br />spread of EAB. Ramsey County is a quarantine area, which prohibits the transportation of ash <br />wood outside the County.The Minnesota Department of Agriculture is responsible for <br />quarantine enforcement andpenalties. <br />Signs and Symptoms <br />Signs and symptoms of EAB include: <br />Bark splitting <br />Vertical fissures on bark <br />o <br />Galleries exposed under bark split <br />o <br />Serpentine galleries and “D” shaped exit holes <br />The presence of EAB or larvae. <br />Adult –Bright, metallic green/ ½ inch long, flattened back <br />o <br />Larva –Creamy white, legless <br />o <br />Canopy dieback <br />Begins in top one-third of canopy <br />o <br />Progresses until tree is bare <br />o <br />Increased woodpecker activity. <br />Sprouting of epicormic shoots from the base of the tree <br />Current EAB situation <br />St. Paul and Falcon Heights confirmed EAB discovery in May of 2009. The City of Shoreview <br />confirmed EAB discovery in the vicinity of County Road I and Schutta Roadin July of 2011. <br />The Department of Agriculture has since identified 11 trees in this neighborhood with confirmed <br />EAB and several that are suspected and being monitored. How thesetreesbecame infested is <br />%¬¤± «£ !²§ "®±¤± - ¦¤¬¤³ 0« #¨³¸ ®¥ !±£¤ (¨««² 0 ¦¤ 1 <br />Adopted by the City Council on July 30, 2012 <br /> <br />
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