Digital-only access only $9.00/mo Set up your account Log In Set up Account Jesse Fox, arborist and certified applicator with Arbor Master of Mason City, shows one way ash trees are treated to prevent emerald ash borer by drilling small holes into the base of the tree, installing retainer plugs and then injecting a chemical, emamectin benzoate, into the active sapwood of the tree.
With confirmed detections now in 50 counties, the exotic pest that attacks and kills ash trees has now reached more than half of Iowa's counties, according to a news release from the Iowa Department of Agriculture and Land Stewardship.
A federal quarantine, enforced by the U.S.
Department of Agriculture, remains in effect and prohibits the movement of all hardwood firewood and ash articles out of Iowa into non-quarantined areas of other states without a valid compliance agreement or permit.
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