After research and input from advisory group, ODA says it will limit the use of chlorpyrifos by December 2023

PMG FILE PHOTO - The Oregon Department of Agriculture says it will begin to limit the use of the pesticide chlorpyrifos and ultimately end its use in two years.

The Oregon Department of Agriculture says it will begin to limit the use of the pesticide chlorpyrifos and ultimately end its use in two years.

The agency's decision, announced Dec. 15, followed  HYPERLINK "" extensive research and input from an advisory workgroup that included leaders and industry experts ranging from agriculture, environmental justice groups, toxicologists, and a farmworker health and safety organization. The ODA  HYPERLINK "" submitted rules to significantly limit the use of chlorpyrifos and phase out all its use by December 2023.

Chlorpyrifos is a pesticide mainly used in Oregon on Christmas trees, leafy green crops and alfalfa. Its use has been scientifically linked to harmful effects on the human body.

Some of the most notable changes under the ODA's new rules will be prohibiting the application of the pesticide on golf courses and certain types of enclosed structures. The rules also establish a four-day restricted entry interval after use for all crops, including nursery and Christmas trees and a ban on aerial applications for all crops except Christmas trees. Also, all applicators must pass a pesticide certification exam and obtain a license.

By year's end 2023, the sale or use of chlorpyrifos will be prohibited except for commercial pre-plant seed treatments, granular formulations and cattle ear tags.

The ODA received more than 2,400 comments over two public comment periods. In the next three years, the ODA will research alternative products and evaluate new Environmental Protection Agency approved insecticides. The final rule reflects the goal to reduce the risk of exposure to the pesticide by limiting its use.

Beyond Toxics Executive Director Lisa Arkin, a member of the chlorpyrifos workgroup committee, said the new rules put Oregon on par with California laws on the pesticide's use but added she was disappointed it was not completely and more immediately banned.

"I don't see the rules reflecting the urgency of Oregonians that wanted to see this completely phased out," Arkin said.

Chlorpyrifos workgroup committee member and Oregon Farm Bureau lobbyist Jenny Dresler said the organization is still reviewing the rules for impacts to Oregon farmers.

"Upon initial review, we are disappointed to see chlorpyrifos phased out without acknowledgment of the lack of viable alternatives for many of the crops that Oregon is known for," she said.

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