understanding soils: implications for nutrition and terroir · understanding foothill vineyard...
TRANSCRIPT
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Understanding Foothill Vineyard Soils: Implications for Nutrition and Terroir
Toby O’Geen Dept. of Land Air and Water Resources
UC Davis
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General Soils Map of Eldorado and Amador Counties
Eldorado
Amador
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http://casoilresource.lawr.ucdavis.edu/soilsurvey
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http://casoilresource.lawr.ucdavis.edu/soilsurvey
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Links to Official Soil Series Description
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Links to Soil Survey Handbook
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Interpretations: Waste Application, Engineering,
Urban/Recreational, Irrigation
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http://casoilresource.lawr.ucdavis.edu/soilsurvey
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Google Earth Interface
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Google Maps Interface
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Iphone Soil App
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Getting to Know Your Soils with Soil Survey
Critical functions of soil for wine production:
‐Rooting depth; Drainage; Nutrient supply; Regulation of water
Other utilities of soil survey:‐Creating a sense of place
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Eldorado
Amador
Calaveras
Sierra Foothill Geology
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Volcanic TerrainCommon soils: Aiken, Cohasset, Iron Mountain, McCarthy
Important properties: 1) high water holding
capacity 2) phosphorus deficiency3) high potassium
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Metavolcanic Terrain
Important properties: 1) Mod‐high water holding
capacity 2) phosphorus deficiency3) soil depth
Common soils: Boomer, Sobrante, Argonaut
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Metasedimentary Terrain
Important properties: 1) Moderate water holding
capacity 2) phosphorus deficiency3) soil depth
Common soils: Josephine, Sites, Auburn, Mariposa
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Granitic Terrain
Important properties: 1) low water holding
capacity 2) potassium deficiency3) soil depth
Common soils: Shenandoah, Auberry, Musick, Rescue, Holland, Sierra, Ahwahnee
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Thank You
Acknowledgments: Thanks to Dylan Beaudette for his efforts in the development of online soil survey resources