The Environmental Protection Agency (EPA) recently 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.
According to Turfgrass Producers International, 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 EPA to learn more about this recent action and will communicate any future updates.
