On August 7th, 2024 The Environmental Protection Agency (EPA) issued an Emergency Order directing the suspension of all registrations issued under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) for pesticide products containing the active ingredient dimethyl tetrachloroterephthalate (DCPA), also marketed under the trade name Dacthal. Dacthal Flowable and Dacthal W-75 are both registered for annual grassy weed and broadleaf control in turfgrass production. However, they are more heavily relied upon in vegetable production (broccoli, cabbage, onions, and others where this ruling will likely have more significant impact. It is important to note that Dacthal has been immediately suspended for use on all crops, not just turfgrass sod.
TPI is working with the Environmental Protection Agency to learn more about this recent action and will communicate any future updates. You can see the full annonucment at the link below. If you have questions or concerns about this issue, please contact Casey Reynolds, PhD at CReynolds@TurfgrassSod.org or 847-737-1846.
