GINLC Newsletter: No More Emerald Ash Borer?

Since its discovery in 2002, emerald ash borer (Agrilus planipennis fairmaire), or EAB, has destroyed more than 30 million trees in Michigan. Other U.S. states and Ontario have lost trees, too. Adult EABs don't do much damage. But the larvae tunnel into the bark, disrupting the flow of nutrients and killing the tree.

Last year, scientists at Michigan State University had great success with emamectin benzoate. Trees treated with this pesticide had 99% fewer larvae than untreated trees. Sold as Tree-ageTM at www. arborjet.com, it can only be applied by certified professionals every other year or annually, if needed.