美国明尼苏达州的EAB甲虫已经被确认,威胁着灰树. EAB beetle confirmed in Minnesota, threatening ash trees.

灰钻虫,一个来自亚洲的入侵甲蟲, 在圣. Emerald ash borer, an invasive beetle from Asia, has been confirmed in St. 美国明尼苏达州的云,威胁着该州十亿棵树. Cloud, Minnesota, threatening the state's billion ash trees. 通过感染的柴火传播, 破坏水和营养流动. The pest, spread by infested firewood, kills trees by disrupting water and nutrient flow. 虽然去除木头是昂贵的, 但专家表示使用化学处理方法 (如乳母酸) 是非常有效的. While removal is costly, experts say professionally applied chemical treatments, like emamectin benzoate, are highly effective and can save healthy trees with at least 70% canopy coverage.