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Michigan Ag News Headlines
Chlorpyrifos Update for Vegetable Crops in 2024
Michigan Ag Connection - 02/09/2024

The insecticide chlorpyrifos, known by its tradename Lorsban, was an important tool for a variety of vegetable crops including brassica root crops, leafy brassicas, asparagus and onions. In 2022, the use of this insecticide was canceled. However, in February 2024, the U.S. Environmental Protection Agency reinstated all tolerances—vacating the past rule—as the result of a December 2023 court ruling.

This means that at present, growers of crops that have been on the label in previous years can apply this insecticide consistent with label directions without any violation. Growers with existing stocks of chlorpyrifos may use them according to the label. Retailers, distributors and suppliers may sell currently registered products containing chlorpyrifos. Note that many manufacturers voluntarily canceled their registration to produce chlorpyrifos. This means that new product will only be available through Gharda, Drexel or Loveland.





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