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Article

Use of GPS and GIS for Elucidation of the Basis for Terroir: Spatial Variation in an Ontario Riesling Vineyard

Andrew G. Reynolds, Ilya V. Senchuk, Conor van der Reest, Christiane de Savigny
Am J Enol Vitic.  2007  58: 145-162  ; DOI: 10.5344/ajev.2007.58.2.145
Andrew G. Reynolds
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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  • For correspondence: areynold@brocku.ca
Ilya V. Senchuk
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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Conor van der Reest
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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Christiane de Savigny
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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Abstract

Vine size and soil texture effects on yield components, soil, vine tissue, fruit composition, and wine sensory attributes were measured in an Ontario Riesling vineyard to clarify the potential basis for terroir. Sentinel (sample) vines were geolocated using global positioning systems. Geographic information systems delineated spatial variation in soil texture and soil vine tissue composition (1998) and in yield components, berry composition, and weight of cane prunings (vine size) over four years (1998 to 2002) from each sentinel vine. Vines were classified as large or small based on previous season vine size within each of two soil texture classes (clay and sand); fruit from these four categories was separated for winemaking; berry, must, and wine chemical compositional data were determined; and wine sensory descriptive analysis was conduced. Correlations were observed between soil texture and composition versus berry weight and potentially volatile terpenes (PVT). There were no consistent soil texture or vine size effects on berry, must, or wine composition. Large vine size increased berry titratable acidity (TA) (2001) and PVT (2002), decreased must pH (1999), and increased wine free volatile terpenes (2001). Sandy soil reduced wine TA and must PVT (1999) and increased berry TA and must soluble solids (2002). Vine size and soil texture did not consistently affect wine sensory attributes across vintages. High vine vigor decreased mineral aroma (1999) and citrus flavor (2001) and increased apple attributes (2001). Clay soil increased mineral aroma (1999 and 2001) and citrus attributes (1999) but decreased apple aroma (1999). Citrus aroma and petrol flavor increased in some vine size x soil texture combinations in 2002. Vintage and wine age had greater impacts on wine sensory attributes than vine size or soil texture.

  • fruit composition
  • global positioning systems
  • geographic information systems
  • precision viticulture
  • sensory analysis
  • Received January 2006.
  • Revision received June 2006.
  • Revision received October 2006.
  • Copyright © 2007 by the American Society for Enology and Viticulture
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Use of GPS and GIS for Elucidation of the Basis for Terroir: Spatial Variation in an Ontario Riesling Vineyard
Andrew G. Reynolds, Ilya V. Senchuk, Conor van der Reest, Christiane de Savigny
Am J Enol Vitic.  2007  58: 145-162  ; DOI: 10.5344/ajev.2007.58.2.145
Andrew G. Reynolds
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
  • Find this author on PubMed
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  • For correspondence: areynold@brocku.ca
Ilya V. Senchuk
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
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Conor van der Reest
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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Christiane de Savigny
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
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Use of GPS and GIS for Elucidation of the Basis for Terroir: Spatial Variation in an Ontario Riesling Vineyard
Andrew G. Reynolds, Ilya V. Senchuk, Conor van der Reest, Christiane de Savigny
Am J Enol Vitic.  2007  58: 145-162  ; DOI: 10.5344/ajev.2007.58.2.145
Andrew G. Reynolds
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: areynold@brocku.ca
Ilya V. Senchuk
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Conor van der Reest
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
  • Find this author on PubMed
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Christiane de Savigny
1Professor of viticulture, 2Undergraduate thesis student, and 3Technician, Cool Climate Oenology and Viticulture Institute, Brock University, St. Catharines, ON L2S 3A1, Canada.
  • Find this author on Google Scholar
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