摘要 : Maryland officials recently confirmed the presence of the emerald ash borer (Agrilus planipennis) in ash trees located in the Clinton/Brandywine area of southern Prince George's County. The effected trees were discovered during su... 展开 Maryland officials recently confirmed the presence of the emerald ash borer (Agrilus planipennis) in ash trees located in the Clinton/Brandywine area of southern Prince George's County. The effected trees were discovered during survey and eradicationefforts begun after the detection of the insect in Maryland in 2003, when a Michigan nurseryman shipped infested trees into a Prince George's County nursery. "While we are disappointed to find the emerald ash borer after nearly three years of no detections, we are pleased that our surveillance efforts have proven to be effective and that we found the insect before it could spread further," said Agriculture Secretary Lewis R. Riley. "Together with our federal, state and local nursery partners, we are beginning aggressive measures to control and eradicate this destructive pest." 收起