Update: The comment period has been extended to October 16.

Dear Wisconsin Grape Growers –

Many of you are already aware that the EPA is considering delisting mancozeb fungicide for use in grape. This could have a significant impact on the grape industry.

• Mancozeb is one of the few multi-site inhibitor fungicides we have registered in grape. These multiple modes of action provided by mancozeb reduce the risk for fungicide resistance development, making it a critical tool in our fungicide toolbox.
• It is very effective at controlling diseases such as black rot, Phomopsis, and downy mildew, which are common in many Wisconsin vineyards.
• As observed during this rainy season, diseases such as downy mildew and black rot can lead to crop loss.

See this article from Dr. Katie Gold (Cornell University) where she summarizes the key details of the EPA’s proposal and outlines how impacted members of the grape industry can respond:

EPA Considers Delisting Mancozeb for Use in Grape

They are accepting comments until October 16 here:

https://www.regulations.gov/document/EPA-HQ-OPP-2015-0291-0087

For guidance about submitting comments, please see this article from Megan Luke at Penn State Extension:

https://extension.psu.edu/a-comment-period-regarding-label-changes-to-mancozeb-is-open-until-september?j=807594&sfmc_sub=74498860&l=159_HTML&u=21368324&mid=7234940&jb=4&utm_medium=email&utm_source=MarketingCloud&utm_campaign=GPSY_Aug_29_2024_ALERT&utm_content=GPSY_Aug_29_2024_ALERT&subscriberkey=0030W00003rfpWtQAI

This article was posted in Grapes and tagged Grapes, Leslie Holland, mancozeb.