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EPA Clarifies New Rules for Using Toxic Weedkiller on Farms (1)

March 10, 2020, 8:00 PMUpdated: March 10, 2020, 9:40 PM

EPA officials fielded questions Tuesday about the government’s new rules for using paraquat, a liquid weedkiller so toxic that a single sip can be fatal.

The agency discussed its changes for handling paraquat at a meeting of state pesticide regulators meeting in Alexandria, Va. There are new training and labeling requirements for the herbicide, and manufacturers must use a closed packaging system to prevent spills and exposure.

The new packaging is designed to prevent the transfer or removal of the pesticide except directly into proper application equipment, thus preventing spills or accidental exposures. Certified applicators must take paraquat-specific training before ...