May 3, 2016

Red Blotch Disease Identified in Ontario

Grapevine red blotch, a disease normally found on the East and West Coasts, is turning up in Ontario according to the Ontario Ministry of Agriculture, Food and Rural Affairs. Red blotch can stop grapes from fully ripening.  Red blotch first appeared in Napa Valley in 2008 and has since been observed to at least six other states and now Canada. See: Grapevine red blotch associated virus: A newly … [Read more...]

Herbicide Drift Plagues Ohio Vineyards in 2013

Most vegetable and fruit farmers have probably experienced crop injury from glyphosate spray drift at one time or another. The most recognizable name in this class is Roundup along with several other glyphosate products such as Acquire, Glystar Plus, Rodeo and Touchdown.The glyphosate group provides good control to a wide variety of broadleaves and grasses with no residual effects to the soil. … [Read more...]

Downy Mildew in Grapes – Secrets of Disease Management

Experienced grape growers saw it coming. New growers hadn’t a clue. Regardless, my crystal ball told me that with months of rain would come severe outbreaks of downy mildew in vineyards.Grape downy mildew has reached epidemic levels in some vineyards in Kentucky and other parts of the Midwest. The pathogen that causes the disease (Plasmopara viticola) is a water mold, which warrants special … [Read more...]

Heavy Early-Season Rains Create Potassium Deficiency

Potassium is important for grapevines to function and is one of the most frequent nutritional deficiencies of vines. A grapevine with inadequate potassium produces poor, unevenly ripened fruit and reduced yields. Severe deficiency results in defoliation. Leaves in the mid- to basal portions of shoots are affected. Clusters of deficient vines tend to be small with a few unevenly ripened berries. … [Read more...]

Spotting Anthracnose and Downy Mildew Quickly

Dr. Dean Volenberg from Door County Wisconsin is back this summer with his excellent "Vineyard IPM Scouting Reports."    The link below will take you to some very revealing photos of Anthacnose and Downy Mildew.  (Some of the photos are quite graphic and squeamish viewers are advised to look cautiously.)Dr. Volenberg reports that the Wisconsin Grape Growers Educational Committee Survey that … [Read more...]

Disease Alert: Current Conditions Perfect for Disease Development

This article is reprinted by permission of the authors, Dave Scurlock, OSU/OARDC Viticulture Outreach Specialist and Dr. Mike Ellis, Ohio State University /OARDC Plant Pathology.  It appeared first in The Ohio Grape Wine Electronic Newsletter. I do not want to reinvent the wheel and I know that you know (or should know) that the past couple of weeks have been as ideal of conditions for disease … [Read more...]

Sustainable Suggestions From Michigan’s Good Neighbor Winery

During 2012,  Midwest Wine Press went looking for organic grape growers (See: Growing Organic Grapes in the Midwest) and found a few Midwestern vignerons who meet the strict USDA Organic certification requirements.Since then, we've heard from a number of wineries that grow grapes using various "sustainable" methods.  One winery in Northern Michigan, Good Neighbor Organic Vineyard and Winery, … [Read more...]

Cab Dore’ Combines Best of Old and New Worlds

 Homepage photo: Joseph and Lucian Dressel When you read all the old grape breeding literature from John Adlum to George Hussmann to U.P. Hedrick to Philip Wagner, the one common theme is the endless search for high quality wine grapes that will grow in the East. Wagner, as the promoter and propagator of the French Hybrids, is really the founder of the modern Eastern wine industry, yet … [Read more...]

Demand For Traminette Increasing

Traminette is an interspecific hybrid grape cultivar that was bred in 1965 in Illinois. One of the notable parents of Traminette is Gewürztraminer. Traminette was publicly released by Cornell University in 1996, and has been increasingly used in many parts of the U.S. While this grape cultivar is much cold-hardier than its notable parent, it is still limited in where it can be grown.One … [Read more...]

Downstream from St. Paul Is the St. Pepin Grape

The St.Pepin wine grape is partially named for the Lake Pepin, a 40 square mile lake in the Mississippi River.  Most of the St. Pepin wine made in the U.S. is produced in the two states on either side of Lake Pepin, Minnesota and Wisconsin.Like many creations of legendary grape breeder Elmer Swenson, St. Pepin is a wonderful contribution to cold-climate grape varieties. Whether it is used as a … [Read more...]