Chlorpyrifos Cancellation


The California Department of Pesticide Regulation has begun the process to cancel the registration of chlorpyrifos products because of the detrimental human health effects associated with its use. It has served legal notices, called accusations, to cancel chlorpyrifos product registrations on the product registrants. Recent research, cited in recent findings by the state's independent Scientific Review Panel on Toxic Air Contaminants, has shown that chlorpyrifos is also a developmental neurotoxin in children and sensitive populations.

Chlorpyrifos is an organophosphate pesticide that is used to control pests on a variety of crops, including alfalfa, almonds, citrus, cotton, grapes and walnuts. Although use of chlorpyrifos in California has declined by about 50 percent in the last decade, and significantly in the last year due to the latest interim restrictions (permit conditions) on chlorpyrifos use, some growers who still use this pesticide to tackle pests will be impacted by the cancellation

Work Group

Public Input

In order to support the transition to safer, more sustainable alternatives, DPR and the California Department of Food and Agriculture (CDFA) are partnering to convene a working group to identify, evaluate, and recommend alternative pest management solutions. Members of the public can offer input and ideas for the group to consider via email at until Monday, September 30th. The public can also sign up for continuous updates about the Work Group and other actions related to the chlorpyrifos via the Alternatives list serve.

Description of Work Group Membership

The Alternatives Workgroup will consist of representatives from California universities, environmental justice groups, UC Cooperative Extension and IPM scientists, pesticide registrants, farmworker health and safety organizations, agricultural commissioners, commodity organizations, pest control advisors, product manufacturers, and state agencies.

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