Tree Fruit Research & Extension Center

Apple IPM Transition Project

AZM Phase Out Schedule


In 2006, EPA issued a decision on Azinphos-methyl (AZM) to phase out the remaining uses by September 30, 2012. A product cancellation order followed in 2008 which confirmed and finalized that order. AZM (also sold as Guthion) has been an important product for the control of tree fruit pests. But AZM, an organophosphate (OP) pesticide, poses health risks to farm workers, pesticide applicators and to aquatic ecosystems, hence the reason for the product phase out.

The EPA web site states that by phasing out AZM, growers will be encouraged to use other, safer pesticides or alternative methods of pest control. The Pest Management Transition Project was first established to assist apple growers make the transition away from AZM use through education aimed at informing growers/managers/consultants about OP alternatives and how best to implement their use into management programs. We encourage everyone to download a copy of the PMTP Handbook for information on OP alternatives and how best to incorporate them into your pest management programs.

EPA Phase Out Schedule

2007 limit of 4 lb ai/A 8 lb product
2008-2009 limit of 3 lb ai/A 6 lb product
2010 limit of 2 lb ai/A 4 lb product
2011-2012 limit of 1.5 lb ai/A 3 lb product


Update Notice:

The following exerpt was taken from the WSPRS website

Azinphos-Methyl Uses Cancellation September 30, 2012; Use of Existing Stocks Allowed through September 2013

After considering comments from growers and other stakeholders, EPA has completed a final risk-benefit analysis for the remaining uses of the organophosphate insecticide azinphos-methyl (AZM). AZM can present health risks to workers and can cause negative ecological impacts, while effective alternatives to this insecticide are available to growers. EPA has decided to maintain the September 30, 2012, effective date for cancellation of the remaining uses of AZM, on apples, blueberries, sweet and tart cherries, parsley, and pears.

Due to unusual bad weather conditions in 2012, EPA will modify the cancellation order to allow growers to use only existing stocks of AZM in their possession for another year, through September 30, 2013. All the required mitigation measures now reflected on AZM labeling will remain in effect during this use. Distribution or sale of AZM after September 30, 2012, remains prohibited. This decision will not result in greater use of AZM than originally anticipated, and provides a safer alternative to disposal arrangements.

Further information is available in AZM docket EPA-HQ-OPP-2005-0061 at

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