"No effective chemical or biological treatment" for emerald ash borer, city says.
Thursday, October 6, 2011
It was determined last month that Elmhurst has not escaped the emerald ash borer infestation identified in Illinois more than five years ago. No effective chemical or biological treatments exist that are appropriate on a large scale, according to a statement released by the city on Thursday. City staff have created a plan to prepare the community for the economic and environmental impact of removing and replacing about 2,300 ash trees, or about 10 percent of the city’s trees. "While the realities are discouraging, Elmhurst’s sound tree planting policies over the years have resulted in a great deal of diversification in tree variety," according to a press release from the city. "In some communities, ash trees comprise as much as 30 percent …
A type of wasp has been found to be effective as an early warning device for Emerald Ash Borer infestation.
Saturday, August 13, 2011
The partnership of the Morton Arboretum and Illinois Parks and Recreation Association has discovered a new predator in the fight to stop the Emerald Ash Borer (EAB). Researchers confirmed that Cerceris fumipennis (Cerceris), a native wasp that preys on EAB, was found at Emerson Park in suburban Skokie. Now, researchers hope that the wasp will serve as a sort of “canary in the coal mine,” or an early warning system for EAB infestation, in areas where EAB has not yet been found, said Dr. Frederic Miller, research associate at the arboretum. “By the time humans are able to detect EAB visually, the infestation is usually well-established. We hope this wasp will serve as an effective monitoring tool, giving us an earlier read as EAB makes its …