Can chlorpyrifos be used to manage crop pests in 2024?

Robert Koch, UMN Extension soybean entomologist; Bruce Potter, UMN Extension IPM specialist; and Fei Yang, UMN Extension corn entomologist

Questions continue to be raised about the potential to use chlorpyrifos-containing products against crop pests. Chlorpyrifos was taken off the market for a period of time after the US EPA removed all tolerances for food and feed. Then, tolerances were reinstated after the EPA’s decision was challenged in court; however, this occurred after many manufacturers had already voluntarily canceled their products at the federal level. Minnesota has conditionally registered the following products that still have federal registrations for 2024. These products may be used through 2024 according to the directions on their labels. Check the MDA webpage or Kelly Solutions webpage for current listing of registered products for Minnesota.

As of July 12, 2024, the ten chlorpyrifos-containing products registered for agricultural use in Minnesota were:

1. DURAGUARD ME MICROENCAPSULATED INSECTICIDE
2. PILOT 4E CHLORPYRIFOS AGRICULTURAL INSECTICIDE
3. PILOT 15G CHLORPYRIFOS AGRICULTURAL INSECTICIDE
4. WARHAWK
5. WARHAWK CLEARFORM
6. DREXEL CHLORPYRIFOS 15G AGRICULTURAL INSECTICIDE
7. DREXEL CHLORPYRIFOS 4E-AG INSECTICIDE
8. DREXEL LAMBDAFOS INSECTICIDE
9. MATCH-UP
10. GOVERN INSECTICIDE

Please note that this list will change over time, so checking the official listings of registered products for Minnesota is important. Questions about chlorpyrifos labels should be directed to the Minnesota Department of Agriculture’s Pesticide and Fertilizer Division.