Grape Breeding and Enology

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Welcome to the Grape Breeding and Enology project website!

Located at the University of Minnesota-Twin Cities, we conduct research in the Department of Horticultural Science and at the Horticultural Research Center.  Our focus is on grapevine cultivar development which includes: wine grapes, table grape varieties, and ornamentals that survive and thrive the cold-climate conditions.  We also focus on understanding the mechanisms of disease and pest resistance so that we incorporate these traits as a way to improve sustainability for Minnesota growers.  In addition to developing grapes, we focus on developing and teaching enology best practices for cold-hardy grapes.

Potential bunch stem necrosis in Minnesota grapevines

Annie Klodd, Matt Clark, and John Thull

We have heard multiple reports of severe cluster necrosis, particularly on Marquette grapes in 2016 and 2017 in Minnesota, including here at the U of MN Horticultural Research Center. In some vineyards, it has caused substantial or complete crop loss.

Growers report that the clusters rapidly shrivel and die during veraison, while the plants and clusters appear healthy up until this point. It does not appear to be caused by black rot, mildew or botrytis. The rachis on the clusters desiccate first, followed by the berries.

2018 UMN Research Update

Please plan to attend the 2018 Grape Breeding and Enology Research Update on Saturday, March 17 in conjunction with the Cold Climate Conference. 

For this year only, graduate students and researchers will present their findings and updates on ongoing projects at the conference hotel.  There is no charge to attend the research update, but please register and make a selection if you would like to stay for lunch ($25). Attendees will also have free access to the CCC Exhibit Hall on Saturday.

UMN Extension Welcomes Annie Klodd

Annie Klodd Extension EducatorAnnie Klodd joined the University of Minnesota Extension in January as the new Assistant Extension Professor for Fruit and Vegetab


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