Illinois Fertilizer & Chemical Association
Supply · Service · Stewardship

States Continue To Decide The Fate Of Chlorpyrifos

California agriculture has officially lost a major insecticide that has long been a tool to combat insects that plague fields. On May 8, 2019, California Gov. Gavin Newsom announced that his administration planned to ban chlorpyrifos. On Oct. 10, it was announced that California and Corteva Agriscience reached a deal to halt the sale of chlorpyrifos on Feb. 6, 2020. Producers can continue to use remaining supplies until Dec. 31, 2020. After that, chlorpyrifos use in California is banned.
 
Chlorpyrifos History
 
Chlorpyrifos was first registered as an insecticide in 1965. Since then, many restrictions have been placed on its use with a series of actions by EPA starting in 2000. (click here for a timeline of EPA's actions on the pesticide)
 
In November 2016, the Obama administration and the EPA moved forward with the evidence that a ban on chlorpyrifos was justified. Just four months later in March 2017, EPA head Scott Pruitt denied the petition to ban chlorpyrifos, which left chlorpyrifos on the market until the next registration review on Oct. 1, 2022. 
 
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