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Health and Life Science

Researcher works to protect trees

The Christmas tree tradition supports a sizeable industry in Washington, and Gary Chastagner, a scientist at the Puyallup Research and Extension Center, works to make sure both tradition and industry remain strong.

Sudden oak death, an exotic plant disease with the potential to kill some species of large oak trees, is Chastagner's main concern.

"At least 40 percent of the nation's Christmas trees are produced in Washington state, and half of them are Douglas firs," he said.

While sudden oak death does not kill Douglas firs, the trees do make a viable host of for the disease. If the trees were infected and then sold across the country, they could infect other trees that could die from the disease.

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