Evaluation of Winegrape Varieties for Warm Climate Regions...
Transcript of Evaluation of Winegrape Varieties for Warm Climate Regions...
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Evaluation of Winegrape Varieties for Warm Climate Regions
San Joaquin Valley Viticulture Technical Group
Jan 11, 2012
James A. WolpertExtension Viticulturist
Department of Viticulture and EnologyUC Davis
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Factors affecting selection of varieties
Your location– Cool vs. warm vs. hot– Highly regarded vs. less well known
appellation
The Marketplace– Supply and demand– Mainstream vs. niche markets
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Talk Outline
• California Variety Status• Variety Trial Data From Warm Region
• World Winegrape Variety Opportunities
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Sources of Variety Information in California
California Grape Acreage– http://www.nass.usda.gov/ca/
Grape Crush Report– http://www.nass.usda.gov/ca/
Gomberg-Fredrikson Report– http://www.gfawine.com/
Market Update Newsletter (Turrentine Wine Brokerage)– http://www.turrentinebrokerage.com/
Unified Symposium (late January annually)– http://www.unifiedsymposium.org/
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U.S. Wines
• 10 varieties comprise about 80% of all bottled varietal wine: – Chardonnay, Cabernet Sauvignon, Merlot,
Zinfandel (incl White Zin), Sauvignon blanc, Pinot noir, Pinot gris/grigio, Syrah/Shiraz, Petite Sirah, Viognier
• First three are often referred to as the “International Varieties”
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New Varieties:Is There a Role?
• Interest in “New Varieties”– Consumer interest – excitement of discovery of new
varieties/regions• Core consumers say ABC: “Anything but Chardonnay”
– Winemaker interest• Capture new consumers• Offer something unique to Club members• Blend new varieties with traditional varieties to add richness
and interest: flavor, color, tannin– Winemaker concern
• SJV winemakers are skeptical of new varieties as “stand alone” (high volume) wines because names are not recognizable to the U.S. wine-drinking public (Viognier)
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Question:The last time you had a glass of wine,
what variety was it?
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“New Varieties”
• New to California• Traditional varieties
– “autochthonous” = indigenous • Southern Europe focus
– Portugal, Spain, southern France, Italy and Greece
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Major red varieties:Cabernet SauvignonMerlot
Minor red varietiesCabernet francMalbecPetite VerdotCarmenere
Major whiteSauvignon blanc
Minor whiteSemillon
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Rhone Valley and LanguedocMajor reds
SyrahGrenacheMourvedreCarignane
Australian Blends: SGM, GSMMinor reds
Many, generally as blendsMajor white
Viognier
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Alternative Varieties - France
• Marsanne/Roussanne• Mourvèdre• Grenache blanc/gris• Tannat• Carmenere• Malbec (Cot)• Petite Manseng • Other minor cepages of Rhone
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Albariño Tempranillo
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Alternative Varieties - Spain
• Tempranillo (R)• Graciano (R)• Mencia (R)• Verdejo (W)• Albillo Real (W)• Albariño (W)• Godello (W)
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Port varieties Along the Douro River
Red and white table wines from the south
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Alternative Varieties - Portugal
• Trincadeira Preta• Touriga Nacional• Touriga Francesa• Tinta Cao• Tinta Roriz• Castelão (aka Periquita)
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Alternative Varieties - Italy
• North and Central– Teroldego (R) Arneis (W)– Freisa (R) Garganega (W)– Ruché (R) Timorasso (W)– Sagrantino (R) Vermentino (W)*– Ciliegiolo (R) Vernaccia di San– Fumin (R) Gimignano (W)
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Alternative Varieties - Italy
• South– Nero d’Avola (R) Inzolia (W)– Negro Amaro (R) Grecanico (W)– Aglianico (Taurasi, Vulture) (R) Grillo (W)– Montepulciano (R) Cattarrato (W)– Nerrello mascalese (R) Falanghina (W) – Malvasia Nera (R) Fiano (W)
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Carmenere
Malbec
Tannat
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Alternative Varieties – Greece
• Moschofilero (W)• Assyrtiko (W)• Agioghitiko (R)• Xinomavro (R)• Mavrodaphne (R)
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Associations
• ZAP• Rhone Rangers• Cal-Italia• P.S. I Love U• TAPAS
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Examples• Berryessa Gap – Winters
– Zinfandel, Petite Sirah, Tempranillo, Malbec• Chiarito Vineyards - Ukiah
– Nero d’Avola, Negro Amaro, Zinfandel• Bokisch Vineyards – Lodi
– Tempranillo, Graciano, Garnacha, Albariño• Other wineries
– L’Uvaggio di Giocomo, Monte Volpe, Vino Con Brio
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• Bonny Doon (Randall Grahm)– Too many varieties to name
• “Bonny Doon is the champion of the strange and the heterodox – Ugly Duckling grape varieties whose very existence is threatened by the dominant Cabo/Chardo-centric paradigm.” Bonny Doon notes on Pacific Rim Dry Riesling
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Sources of Variety Information Wine Grape Varieties of California –– UC Ag & Natural Resources– http://iv.ucdavis.edu
Vines, Grapes and Wines– Jancis Robinson (UC Bookstore, PWV magazine)
Catalogue of Selected Wine Grape Varieties and Clones Cultivated in France (in English)– French Government Offices (UC FPS)
Various variety books – Australia, South Africa, Italy (UC Bookstore)
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Information on “Alternative” Varieties• Bastianich, Joseph and David Lynch. 2002. Vino Italiano: The Regional
Wines of Italy. Mitchell Beazley, London, 528 p.
• Belfrage, Nicolas, 1999. Barolo to Valpolicella: The Wines of Northern Italy. Faber and Faber, London, 368p.
• Belfrage, Nicolas. 2003. Brunello to Zibibbo: The Wines of Tuscany, Central and Southern Italy. Mitchell Beazley, London, 493 p.
• Mayson, Richard. 2003. The Wines and Vineyards of Portugal. Mitchell Beazley, London, 354 p.
• Radford, John. 1998. The New Spain: A complete guide to contemporary Spanish wine. Mitchell Beazley, London, 224p.
• All were available at Amazon.com (now, unsure)
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June 22, 2011
Jim WolpertMike Anderson
UC DavisDepartment of Viticulture and Enology
Interaction of Yield, Pruning Weight and Harvest Date for 20 Vitis vinifera cultivars grown in the San Joaquin Valley, California
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June 22, 2011
UC Kearney Agricultural Research and Extension Center (KARE)
Trial Site
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June 22, 2011
UC Kearney Agricultural Research and Extension Center (KARE)
Trial Site
Accumulated degree days (DD) at the Kearney Research and Extension Center CIMIS site (Kearney_Ag_Ctr-01.P). Lower temperature threshold = 50 °F.
2007 2008 2009 2010
March 15 - September 1 3679 3644 3586 3177 September 1 - October 15 793 929 934 995
Soil - Hanford sandy loam
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June 22, 2011
Varieties in KAC Phase I Trial
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June 22, 2011
Varieties in KAC Phase I Trial
“new” selections
standards
“new” varieties
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June 22, 2011
All varieties are commonly cultured20 varieties – 4 replicates RCBD
Vineyard1103P rootstock10’ (3.05 m) x 6’ (1.83 M) spacing30 shoots per vine (16 shoots per meter)
Irrigation – 0.6 to 0.8 ETc
Harvest Brix 24
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June 22, 2011
Our Goals:To evaluate winegrape cultivars for characteristics suitable for wine production in the San Joaquin Valley.
To deliver information to nurseries, growers and vintners that allow for well informed and progressive planting decisions.
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June 22, 2011
Description with Viticulture Measurements
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June 22, 2011
How can we otherwise look at the data?
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June 22, 2011
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June 22, 2011
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June 22, 2011
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June 22, 2011
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June 22, 2011
KARE 2007-2010
Yield : Pruning Weight
0 5 10 15 20 25
Har
vest
Dat
e
8/27
9/3
9/10
9/17
9/24
10/1
10/8
10/15
Aglianico
CarmenereCab Sauv
Cinsaut
Durif
Freisa
Grenache noir
Malbec
Montepulciano
Petit verdot
Refosco
Souzao
Syrah
Tannat
Tempranillo
Tinta Amarella
Tinta Francisca
Tinta Madeira
Tinto CaoT Nacional
r ²�0.23
What does overcropped mean?
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June 22, 2011
Wine analysis of single lot fermentations made in 2008
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June 22, 2011
Recommended Varieties
Petite Sirah - DurifMalbec (if better yielding clone)Petite VerdotTannat
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June 22, 2011
Back to the vineyard for more data
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New Trial at Kearney: 55 Varieties
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June 22, 2011
AcknowledgementsStephen VasquezDr. Matthew FidelibusDr. Larry Williams
KAC PersonnelDale PattiganRudolfo Cisneros
Constellation BrandsOren KayeJim OrvisJon Holmquist
Funding
American Viticulture Foundation
California Competitive Grant Program
Viticulture Consortium West