As part of a negotiated settlement between the registrant and the Environmental Protection Agency, Guthion—technically known as azinphos-met3hyl—cannot be distributed after Sept. 30.
But apple growers can continue to use their stockpile until Sept. 30, 2013, according to a news release.
The Michigan apple industry made a case before EPA earlier this year that the original Sept. 30 deadline to halt use of the insecticide would prove a hardship.
EPA agreed and on Aug. 30 extended the deadline to use up stockpiles until 2013.
The industry said the total phase-out would not only disrupt current integrated pest management practices and increase financial losses to growers, but it would also affect markets.
The insecticide is used to control worm pests in apples.
The ban on distribution and sales of Guthion remain unchanged and are prohibited after Sept. 30.
Read the entire announcement at the EPA.