Oregon ag department finishes gypsy moth spraying in Portland
PORTLAND — Government helicopters spraying pesticides over funky neighborhoods in a liberal city would seem a recipe for outrage.
But the Oregon Department of Agriculture completed its gypsy moth eradication campaign over North Portland May 2 without much protest or hubbub. A few people were concerned about the spraying but opposition was “scattered,” department spokesman Bruce Pokarney said.
“I would say the vast majority of people inside the treatment zone either were happy with what we were doing or at least accepted what we were doing,” Pokarney said.
The department sprayed about 8,800 acres three times since April 16, using aerial applications of a biological insecticide called Bacillus thuringiensis var. kurstaki, or Btk, which kills moth larvae. Gypsy moths, an invasive species, can do horrendous damage to trees, and Btk has been the insecticide of choice since the 1970s.
Monday’s final application involved the St. Johns, West Hayden Island and Linnton areas, a portion of Forest Park, and an industrial area of the Port of Portland. The department also sprayed at the Port of Vancouver, across the Columbia River from Portland, under an arrangement with the Washington Department of Agriculture. The Washington department carried out its own gypsy moth campaign involving 10,450 acres, including parts of Seattle and Tacoma. The department intended to finish May 3.
Pokarney, of the Oregon ag department, said the lack of widespread protest may be due to a couple factors. First, Btk has been used for decades and is widely viewed as effective and safe, he said.
But a public information campaign was crucial, he said. The department held neighborhood meetings, invited comments, arranged for residents to receive project information by automated calls or text messages, and took to Facebook and other social media to explain the operation.
“I think there’s a direct correlation between the amount of transparency in this project and the opposition we faced,” Pokarney said. There were a few glitches — some people who signed up for automatic notification of spraying didn’t receive it — but overall the public seemed to accept the project.
“There’s now an expectation of transparency of what government is doing,” Pokarney said. “You tell them what you’re going to do, how you’re going to do it, and allow them to ask questions That’s the bare minimum now.”
The department will place monitoring traps in the area this week and check them over the summer to make sure gypsy moths haven’t returned, he said.
Last summer, three Asian gypsy moths and two European gypsy moths were detected in the Portland area, including one Asian gypsy moth on the Washington side of the Columbia. Oregon hadn’t sprayed for them since 2009, Pokarney said.