Laney Salisbury in the Watershed Post reports the Mountain Top Arboretum in Tannersville is testing a pesticide’s efficacy against the emerald ash borer, the first test of emamectin benzoate on a wide-area scale. The test is on three acres in the arboretum’s seven-acre Woodland Walk. "It will not treat all 160 trees at once, but in batches annually to reduce the amount of insecticide and labor while still maintaining a chemical barrier," Salisbury writes. The non-native emerald ash borer, is, according to some experts, the most destructive forest insect to invade the U.S., and previously towns in the northeast have used emamectin benzoate on individual ash trees. The hope now is for a way to protect larger areas, as the insect is spreading rapidly throughout the northeastern United States. Read the full story in the Watershed Post.