Nation

25,000 bumble bees killed in Oregon parking lot

WILSONVILLE, Ore. — Oregon officials say a pesticide is to blame for the deaths of an estimated 25,000 bumble bees in a shopping center parking lot.

The state Department of Agriculture said Friday that tests on bees and foliage showed the deaths are ‘‘directly related to a pesticide application on linden trees’’ that was meant to control aphids.

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It said an investigation is underway to see if the application of the pesticide Safari, done last Saturday, violated the law.

To prevent more deaths, bee-proof netting is planned for 55 European linden trees whose blooms attracted the pollinators to the Target parking lot in Wilsonville, southwest of Portland.

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State officials are working with the Xerces (ZERK’-zees) Society for Invertebrate Conservation, the city of Wilsonville and the distributor of the pesticide.

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