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ven_101c_vineyard_establishment-2009_unit_2_soil_survey -...

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4/21/2009 1 David R Smart VEN 101C 2009 David R. Smart [email protected] 2142 RMI North Monday 9:30-11:30 754-7143/754-7144 1) Economic considerations Site Evaluation: 2) Regulatory considerations 3) Climatic considerations 4) Soils considerations 200 million years ago: The coastline was the Sierra Nevada Mountains 150 million years ago: The Pacific Farallon tectonic plate pushed under the North American plate and pushed up the new California coast. The “crumple zones” were weak and allowed volcanoes and lava to cover parts of the new mountains. Napa is ‘almost’ entirely volcanic. Sonoma is both volcanic and uplifted marine deposits. Soil Evaluation: “An assessment of the physical and Soils considerations : An assessment of the physical and chemical properties of a soil on a new property, or in a vineyard scheduled for replant, to determine its suitability for grape production.” 1. Evaluate soil physical, chemical, and biological properties in relation to known conditions that produce premium Objectives of Soil Assessment wine, table or raisin grapes. 2. Identify any physical, chemical, or biological hazards that are known to affect vine survival and growth. 3. Determine measures necessary to promote or restrict vine growth to levels consistent with the goals of a vineyard. 4. Develop recommendations concerning development and management of a property to overcome any physical, chemical, or biological limitations to vine growth.
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4/21/2009 2 A good soil assessment should : Geo-reference (map) soil variation (chemical, physical, biological) biological).
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