In an ongoing effort to fight the destructive emerald ash borer (EAB), the Nebraska Department of Agriculture (NDA) and the U.S. Department of Agriculture (USDA) have joined forces to address the recent confirmation of EAB presence in Lincoln (North Platte) and Nemaha (Shubert area) counties. This marks the first occurrence of EAB in these regions.
The invasive emerald ash borer beetle (EAB) has caused widespread damage to ash trees in Nebraska, with confirmed infestations in various counties. Despite federal quarantine regulations being lifted in December 2021, NDA inspectors remain vigilant, inspecting nursery stock for EAB and other diseases or insects.
NDA Director Sherry Vinton expressed concern over the relentless spread of EAB and highlighted the importance of monitoring efforts. Slowing down the beetle's progression allows communities more time to prepare and devise strategies for managing infestations and disposing of affected ash trees.
Recognizing the distinctive characteristics of EAB is crucial in identifying and addressing the infestation.
characteristics of EAB
• Metallic-green beetle measuring about ½ inch in length.
• Larvae tunnel under ash tree bark.
• Disrupts water and nutrient flow, leading to tree death.
Signs of an EAB infestation
• Thinning or dying branches at the top of the tree.
• S-shaped larval galleries under the bark.
• D-shaped exit holes.
• Suckers along the trunk and main branches.
NDA State Entomologist Natalia Bjorklund suggests using locally sourced firewood and treating healthy ash trees within a 15-mile radius of known infestations to curb human-assisted EAB spread. Treatment can prolong tree life but cannot save it, and declining trees should be considered for removal.
If you suspect an EAB infestation in a non-infested county, report it to the Nebraska Department of Agriculture at 402-471-2351, the Nebraska Forest Service at 402-472-2944, or your local USDA office at 402-434-2345.
Seek assistance from certified arborists for EAB treatment and tree removal. Find local certified arborists through the Nebraska Arborists Association at https://www.nearborists.org/find-an-arborist-1
Nebraska is committed to protecting its ash tree population and collaborating with communities to combat emerald ash borer. Rapid action and raising awareness can safeguard these precious trees from invasive threats.
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Categories: Nebraska, General