1. Washington State Viticulture New York Wine Industry Workshop April 3-5, 2002

18. Daily Mean Temperature

19. Heat Summation

20. Average Rainfall (mm)

21. Average Sunshine Hours

22. Red Acres 1993 Merlot1,800 Cabernet Sauv.1,400 Syrah0 Cabernet Franc150 Lemberger250 Other400 Total4,000 2001 7,100 6,300 2,000 841 174 800 17,215

23. White Acres 1993 Chardonnay 2,600 Riesling 2,000 Sauvig. Blanc 800 Semillon 700 Gewurz. 300 Pinot Gris 0 Other100 Total7,100 2001 7,400 2,291 841 725 493 300 60 12,110

24. Riesling Viticulture Cold Hardy Bunch rot problem only 1 in 5 years –Overhead sprinklers a problem –Yakima Valley later ripening Good acid balance Ample heat units to maturity Yields: 5 - 8 tons/acre (average 7 tons/acre)

25. Riesling Success 1974 Los Angeles Times Competition –1972 Chateau Ste. Michelle Riesling #1 1977 First Late Harvest Riesling 1978 First Riesling Ice Wine Acreage of Riesling soars 1991 acreage decline with recession 2001 growers planting Riesling again

26. Riesling and Chardonnay Acres

27. Riesling Market Over 350,000 cases Riesling per year. Washington State became known as a Riesling producer –Difficult to develop reputation for Chardonnay, Cabernet, Merlot, and Sauvignon Blanc Riesling Demand is Increasing

28. WA Wine Industry 170+ wineries #4 fruit crop after apples, cherries and pears #2 wine state after California Harvested 100,000 tons in 2001

29. Winemaking Machine Harvest at night Press w/o crushing Juice trucked to Woodinville Cote de Blanc or Permier Cuvee Yeast Chill arrest, centrifuge, Bentonite, cold stabilize, bottle

30. 2001 Vintage Dry Riesling –12 g/l RS –7.3 g/l TA –3.05 pH –12.7 Alcohol Johannisberg Riesling –21 g/l RS –7.0 g/l TA –2.95 pH –12.1 Alcohol

31. References www.wawgg.org www.washingtonwine.org Cataclysms on the Columbia. 1979. J.E. Allen and M. Burns. Timber Press. Portland, OR The Wine Project. 1997. R Irvine and W.J. Clore. Sketch Publications. Vashon, WA