In a significant turn of events, Michigan tree fruit growers have been granted a reprieve in the use of chlorpyrifos, an organophosphate insecticide, for the 2024 field season. This follows a Dec. 28, 2023, court ruling which vacated the U.S. Environmental Protection Agency's (EPA) previous revocation of all food tolerances for chlorpyrifos, despite the EPA's identification of 11 exempt uses. As a result, growers can continue using chlorpyrifos-based products like Lorsban, Govern, and Warhawk for combating sap-sucking insects and borers on bearing trees.
However, the ruling does not affect restrictions imposed by processors, buyers, or export markets regarding chlorpyrifos use and residue limits. Additionally, the availability of chlorpyrifos may be constrained as most companies have ceased its production. The EPA is anticipated to finalize the revocation of chlorpyrifos tolerances by fall 2024, with exceptions for certain crops including apples, peaches, and tart cherries in Michigan. This development underscores the importance for growers to explore alternative pest management strategies.
Source: farmprogress.com