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68 WINES&VINES September 2017 WINE INDUSTRY NEWS WINE EAST Natural Corks Champagne Corks Twinline Corks Bartops VISION Synthetic Corks G-Cap® Screw Caps Sales Representatives: Chris & Liz Stamp info@lakewoodcork.com lakewoodcork.com 4024 State Route 14 Watkins Glen, NY 14891 607-535-9252 607-535-6656 Fax PIONEER INNOVATOR PARTNER WALKER'S - FRUIT FARMS WINE JUICE 2860 ROUTE 39 FORESTVILLE, NY 14062 PH: 716-679-1292 www.walkerswinejuice.com Introducing "fresh-pressed" vinifera grape juices from - - Australia Available for delivery in June, with special introductory rates if delivery is taken prior to September. Order Soon -- Limited Supply Over 40 Varieties of Quality Fresh-Pressed GRAPE JUICES (Vinifera, Hybrid, Native) Hundreds of wineries in 36 states make award winning wines with our juices. We can meet your needs with flexible and competitive shipping options. Many varieties available year round. Call for pricing. APPLE, BLUEBERRY, CHERRY, CRANBERRY, MARION BERRY, PEACH, PEAR, PLUM, RED RASPBERRY, RHUBARB, STRAWBERRY C h a r l o t t e s v i l l e , Va . — A pair of wine grape grow- ers from different parts of the United States indepen- dently discovered grape vine symptoms they could not explain and ended up identifying a fun- gus that affects vinifera and hy- brid grape cultivars. Lucie Morton, a well-known viticultural consultant based in Charlottesville, Va., and Dr. Dean S. Volenberg, viticulture and win- ery operations extension specialist at the Grape and Wine Institute of the University of Missouri, each found inexplicable symptoms on grapevines, leaves and fruit. Vo- lenberg identified the fungus Pestalotiopsis in Norton berry clusters and also in a canker on a single Norton vine (which caused trunk die-back), and began writ- ing about his findings in his weekly newsletter Vinews (Viticul- ture Information News) in 2015. Morton first found Pestalotiopsis in 2009, and when she intensified her investigation of the fungus in 2016, she found Volenberg's news- letters online. The two began to work to- gether, as both of them realized Pestalotiopsis was causing more problems. Volenberg found symp- toms early in the season in Norton and Chambourcin in Missouri, and Morton saw evidence during or after véraison in Cabernet Sauvi- gnon and other vinifera and hy- brids in Pennsylvania, Maryland and Virginia. Morton and Volenberg displayed two posters that summarized their evidence that Pestalotiopsis should be recognized as a fungal disease at the American Society for Enology and Viticulture-Eastern Section meeting in Charlottesville, Va., in July. Morton's early work Morton identified Pestalotiopsis in a Pennsylvania vinifera vineyard in 2009. "I saw some canes that had bleaching and little black dots, but it wasn't phomopsis," Morton told Wines & Vines. When the samples she collected began to grow what looked like a fungus, Morton looked at it under a mi- croscope and saw five-celled co- nidia, the asexual spores of a fungus. In searching through a fungal key, she found one that looked like what she was observ- ing. However that fungus, Pesta- lotiopsis, was not found in the Compendium of Grape Diseases edited by Roger C. Pearson. At the time, Morton was work- ing on grapevine red blotch-asso- ciated virus and didn't follow up on Pestalotiopsis. However, in 2014 one of her "high-end vine- yard" clients in Maryland started to have berry shrivel and cluster stem wilt. It was late in the season, and Morton noted that a number of pathogens can cause those symptoms. She also recalled the grower had stopped using Pris- tine, a common strobilurin fungi- cide, earlier in the season. The following year, the vine- yard manager told Morton he had identified what he called "the coral rachis disease." He could see the red rachis on a grapevine from the tractor and, from his experience, knew that was a sign the cluster would shrivel and the berries start to rot. She collected and then incubated samples, and Wine East Covering Eastern North America Researchers: Disease Growing From Maryland to Missouri