Influence of Soil Conductivity on Vineyard Maturity in Merlot (2014)

Soil electromagnetic conductivity may give information regarding soil drainage, salt composition, nutrient density, and texture.  High electrical conductivity correlates to high cation exchange capacity, and is often found in drier soils (due to less salt leaching) or clay soils.  Electromagnetic conductivity soil mapping was conducted on different vineyard blocks, and Merlot blocks of low and high conductivity were harvested separately but on the same day and processed identically.  Although laboratory analyses showed little differences between the wines, sensory analysis revealed significant differences between these wines, with a preference for wines made from high conductivity soils.

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