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4 WINES&VINES April 2016 6 Connect With Us 8 Editor's Letter 87 Advertiser Index METRICS 10 Four Wine Indus- try Metrics Rise Through February. NEWS 14 Top Stories Treasury Back From Cliff; Red Blotch Vector Confirmed. 23 Regional News 80 Eastern News News From Virginia, Texas and Minnesota. COLUMNS 32 Winemaking By Andy Starr 36 Grapegrowing By Glenn McGourty PRODUCTS 28 News Cork-Testing System. 48 Focus Oak Barrel Alternatives. FACES & FORUMS 88 S.F. Chronicle Wine Competition; Texas Wine and Grape Growers Association. PUBLISHING INFORMATION: Volume 97 Number 4. Wines & Vines, ISSN 043-583X, a member of Wine Communications Group, Sonoma, Calif., is published monthly. Periodicals postage paid at San Rafael and at additional mailing offices. Reproduction in whole or part without permission is prohibited. Wines & Vines does not assume responsibility for unsolicited manuscripts or materials. Contributors are responsible for the proper release of proprietary and/or classified information. Wines & Vines is distributed through an audited circulation. SUBSCRIPTION RATES: U.S., $38; Canada/Mexico, $48; All other countries, $85 (for airmail add $85). POSTMASTER: Send address changes to: Wines & Vines, PO Box 1649, Boulder, CO 80306-1649. OAK BARREL ALTERNATIVES 42 Barrel Rescue Turning used oak barrels into new oak adjuncts for wine maturation. By Kerry Wilkinson, Sijing Li, Paul Grbin and Peter Warren WINEMAKING 52 Technical Spotlight: Comstock Wines Winery in Dry Creek Valley offers flexible winemaking. By Andrew Adams 60 Industry Seeks Clarity on Yeast Sales Tax California to stop charging sales tax on wine yeast. By Andrew Adams 82 Spontaneous Fermentations A case study in the Finger Lakes explores where "wild" yeast comes from. By Anna Katharine Mansfield and Camila Tahim BUSINESS 64 Why Wine Producers Hate Franchise Laws A system designed for selling cars still applies to wine sales in many states. By John Trinidad GRAPEGROWING 68 Terroir and Other Myths of Winegrowing An excerpt from the new book by Dr. Mark A. Matthews questions the popularly accepted link between high yield and low quality. 75 Micronutrients, Calcium Can Reduce Botrytis Uncovering the uses of manganese, zinc, boron, seaweed and humic acid extracts to fight disease. By Dr. Larry Parker 77 Managing Mineral Nutrient Efficiency Beyond the "four R's" of fertilization. By Stan Grant 77 82 42 Contents