Issue link: http://winesandvines.uberflip.com/i/70679
WineEast CAUTION: Do not try this at home—if you try to burn out a material you'll probably suc- ceed! However, these results do illustrate the strength of the product. Vivando represents a new class of chemistry, so there are no cross-resistance issues and it should be a useful addition to rotational programs. This could well become one of our "big guns," especially if it is priced competitively. Downy mildew-specific fungicides Downy mildew is Public Enemy No. 1 for several million acres of European vineyards, and growers in Europe may spray a dozen or more times per year to control it. Hence, it's a very attractive target for fungicide development, and many of the resulting products make it across the Atlantic Ocean to us. In addition to Revus/Revus Top, a few fungicides that have hit here recently include the following: Forum (dimethomorph; Group 40 for resistance management purposes)—Same material as Acrobat, registered for many years on vegetable crops. Not much U.S. experience with it used as a solo product Downy mildew is Public Enemy No. 1 for millions of acres of European vineyards. on grapes. It will be combined with a new active ingredient to form the new product, Zampro, whose registration is currently pending. Downy mildew activity only. Presidio (fluopicolide, Group 43)—Un- related to any other grape product on the market, it has had EPA registration for a couple of years but was just registered in New York. Presidio has locally systemic properties, hence some post-infection activ- ity, although this is not well characterized. In our trials, it has consistently provided ex- cellent control. Downy mildew activity only. ATTENTION SHIPPERS, GROWERS, & WINERIES M&M WINE GRAPE CO. juicegrape.com The Sourcing & Transportation of Premium Wine Grapes is Our Specialty GRAPE SOURCING • by Variety • by Appellation • by Specification From premium grape growing areas including: Amador, Mendocino, Napa, Suisun Valley, Clements Hills, Lodi, Central Valley, WA State, Chile S.A. and others WINERY SUPPLY All Equipment & Supplies necessary for all phases of winemaking. Combine with your grape purchase and save $$$ TRANSPORTATION • logistical network operating daily from coast to coast • over 20 years experience in moving product from point A to point B Grapegrowing Ranman (cyazofamid, Group 21)—Also unrelated to any other grape product. Primarily a protectant fungicide, it has provided good to very good control in our trials when used alone, very good to excel- lent when tank-mixed with a phosphorous acid product to add post-infection activity. Downy mildew only. Reason (fenamidone, Group 11)—Different from but same biochemical mode of action as the strobies, hence it is classified with them as a Group 11 material for resistance management purposes (i.e., you can't rotate among the same group, resistance to one is resistance to all). However, it also is different from existing strobie products in that it has a much narrower spectrum of activity (i.e., downy mildew only). Reason provided complete control of downy mildew in the one trial that we've run so far. WE Wayne F. Wilcox is a professor in the Department H&W_Dec10.qxp 10/12/10 10:59 AM Page 1 of Plant Pathology and Plant-Microbe Biology at Cornell University's New York State Agricultural Ex- periment Station at Geneva, N.Y. Craig N. Austin is a graduate student in the same department. Reach them through edit@winesandvines.com. When your crop is down, your demand increased, or you're just starting out... M&M Wine Grape Co. is your source for quality products including fresh grapes, juice, and bulk wine. M&M Wine Grape Co. 101 Reserve Road Hartford, CT 06114 (877) 812-1137 sales@juicegrape.com 50 Wines & Vines APRiL 201 1 Member of: mmwinefamily.com