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Learn about the Emerald Ash Borer, an Asian beetle infesting North American Ash species since 2002, causing canopy dieback, bark splitting, and D-shaped exit wounds. Understand its spread, attack mechanism, detection signs, and impact on the valuable ash trees' ecosystem, furniture manufacturing, and the economy. Discover control methods such as quarantines, wasp releases, and insecticides to combat this destructive pest.
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Emerald Ash Borer Agrilusplanipennis
Some Facts • Originally from Asia • First US detection was in 2002 • Effects all major North American Ash Species • Core infestation is concentrated in SE Michigan
Spread • Have a presence in 14 states and parts of southern Canada • Ash is a popular type of firewood • Thought to be spread by transfer of firewood
Mechanism of attack • Adults lay eggs in crevices of bark • Larvae burrow into bark • Larvae consume cambium and phloem, tree is girdled.
Detection • Canopy dieback • Discolored leaves • Bark Splitting • D-shaped exit wounds
Effects on us • Ash wood is tough, strong, and elastic. • Used in manufacture of furniture • 8 billion ash trees valued at $280 billion
Control and Eradication • Quarantine zones • Release of wasps • Various insecticides