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September 2015 WINES&VINES 57 GRAPEGROWING The disease was detected for the first time in Pinot Gris, which is where the Italian name for the disease comes from (malattia del Pinot Grigio or "Pinot Grigio dis- ease"), though it was later identi- fied in other varieties. The cultivars most affected so far are Pinot Gris, Pinot Blanc, Pinot Noir, Gewürztraminer, Tocai Friulano and Glera (a grape used for Pro- secco production), all typical va- rieties in the regions where the disease is most widespread. No data is currently available on the susceptibility of other varieties common to Italy and other Euro- pean regions, although Merlot and Cabernet seem to show few or no symptoms at all. Fortunately, the incidence of Pinot Grigio disease in the affected areas has remained generally low. In the vineyards observed in Tren- tino Alto Adige, the average inci- dence in susceptible varieties was said to be around 0.5% during the past two or three years. In Friuli Venezia Giulia and Veneto, the in- cidence might be lower. Symptom- atic plants are present sporadically and in an isolated manner in most vineyards. However, when the inci- dence of disease is higher, there is generally a distribution in groups, localized both in the center and at vineyard edges. There are, however, some vineyards where symptomatic plants appear randomly distributed throughout the whole vineyard. Symptoms and damage to production The symptoms described above for Pinot Gris, Gewürztraminer and Glera are more evident at the start of the growing season, when they can be confused with damage caused by eriophyid mites and thrips. At bud break, the infected vines show a clear delay compared to healthy plants, with stunted canes with short internodes bear- ing small, deformed leaves with FOR MORE INFORMATION, CONTACT ATP AT (707) 836-6840 OR ONLINE AT WWW.AMERICANTARTARIC.COM Introducing the Dynamos Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, flter Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, from Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, TMCI Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, Padovan. Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, It's Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, the Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, world's Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, frst Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, patented Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, high~solids, Introducing the Dynamos flter from TMCI Padovan. It's the world's frst patented high~solids, rotary, rotary, cross~fow fltering system that eliminates the need for flter aids. And it's only available only from ATP. Game Game Changer. Game Changer. Changer. Game Changer. Game Changer. First article from Il Corriere Vinicolo Editor's note: This article is published as part of Wines & Vines cooperative editorial effort with Il Corriere Vinicolo, the leading Italian wine industry publication (corrierevinicolo.com). Il Corri- ere Vinicolo is edited by Unione Italiana Vini, the largest Italian wine trade association. On a regular basis, our two publications will share key articles in order to give readers a broader view of important wine in- dustry topics in Italy and North America. 100% 80% 60% 40% 20% 0 Vineyard 1 Vineyard 2 Production (%) HARVEST 2014 n Vines without symptons n Vines with moderate symptoms n Vines with heavy symptoms n Vines with extreme symptoms Comparing the weight of grapes in symptomatic and apparently healthy Pinot Grigio vines at harvest.