Issue link: http://winesandvines.uberflip.com/i/74666
WineEast his is the second installment of a two-part report that includes ab- stracts of recent articles that deal with the part of the grapevine we don't see—the root system and its immediate environment. The first install- ment included articles related primarily to rootstock effects on vine performance: yield, berry composition, scion physiol- ogy, etc. (See "Rootstocks and Vine Performance" in the July 2012 issue of Wines & Vines.) The second group of abstracts deals with pest problems that may be reduced by rootstock choice, including viruses and nematodes. T Consequences of ring nematodes for Pinot Noir grafted on various rootstocks Rootstocks and Pest Management Wine East HIGHLIGHTS: • A professor of viticulture summariz- es six studies about how pest prob- lems can be controlled underground. • The research addresses nematodes, rugose wood complex, methyl bromide alternatives, grapevine necrotic union and more. • The studies summarized were conducted in Chile, Oregon and California. GreenHoe_NewAd_1/4_9/22.qxp 9/28/09 9:30 AM Page 1 Researchers in Oregon studied Pinot Noir grapevines (Wädenswil clone) to evaluate their resistance to ring nematode and better understand how ring nematode parasitism affects below- and above- What's New in Research Recent research tests effectiveness of controlling viruses and nematodes with rootstock selection By Andrew Reynolds ground vine growth and physiology. The vines were either own-rooted or grafted to one of five rootstocks (3309C, 1103P, 110R, 101-14, 420A) known to vary in resistance to ring nematode (Mesocriconema xenoplax.) Ring nematode populations in infested plots of all three susceptible treatments (self-rooted, 3309C, 17 1103P) increased rapidly during the second year and remained high throughout the study, while nematodes increased in two of the previously resistant rootstocks (110R, 101- 14) during the third year. Only 420A remained resistant during the entire four-year period. The impact of ring nematode parasitism on vines was most apparent in the susceptible rootstocks and self-rooted vines with GREEN GRAPE HOE Specialized Tools For Vineyards Weed Control and In-Row cultivation Basic Hoe comes with a Hillup and a Takeaway Blade. Additional attach- ments include .3 Tooth Cultivator, Undercutter Blade, AS GOOD AS IT GETS. Green Hoe with Rotary Head Attachment Rotary head, "NEW" Rolling Cultivator and "New" Brush Rake for removing trimmings out from under the trellis. 6645 West Main Road Portland, NY 14769 PHONE (716) 792-9433 FAX (716) 792-9434 WWW.GREENHOECOMPANY.COM 62 WINES & VINES AUGUST 2012 Natural Corks Champagne Corks Twinline Corks Bartops VISION® G-Cap® Screw Cap Wine Stopper Sales Representatives Chris & Liz Stamp info@lakewoodcork.com Lakewood Cork 4024 State Route 14 Watkins Glen, NY 14891 lakewoodcork.com 607-535-9252 607-535-6656 Fax