Oyster growers asking for permission to use new type of pesticide

By Jake Schild, The Daily World

State regulators are considering a proposal from the Willapa Grays Harbor Oyster Growers Association to use the pesticide imidacloprid to eliminate the problem of burrowing shrimp. The growers association believes the pesticide is a safer alternative to carbaryl, which was previously used to take care of the problem, but environmentalists are concerned about the chemical’s possible effect on invertebrates.

A draft permit for the proposed use of the pesticide has been produced by the State Department of Ecology, as well as a draft environmental impact statement. A fact sheet regarding using imidacloprid has been completed, as well. The pesticide would not be used until the Spring of 2015 if the permit is approved. Public comments on the issue are being taken by the Department of Ecology until Dec. 8.

Willapa Bay produces around 65 percent of the oysters and 13 percent of clams harvested in Washington state. The combined oyster harvest from Willapa Bay and Grays Harbor makes up about 25 percent of the total oyster landings in the United States. Nine thousand acres of oyster grounds are currently farmed in Willapa Bay, while about 900 are farmed for commercial production oysters and clams in Grays Harbor.

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