Companies are voluntarily canceling their chlorpyrifos registrations with the EPA. North Dakota State University Extension Pesticide Program Manager Andrew Thostenson says the food tolerances were revoked in February and this may be the end for this tool. “Corteva exited the market voluntarily back in 2020 so that meant that we were looking at generic manufacturers like ADAMA, WinField (United) and a few others, but without a solid market for it, I just can’t imagine seeing chlorpyrifos back on the market anytime soon.” Due to the presence of sugarbeet root maggot, losing chlorpyrifos has been a significant cost for sugarbeet growers. Thostenson is concerned about more restrictions in the future. “EPA has generally a bias against organophosphate insectides.’
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