Determining geological controls on nutrient availability at different depths in the soils of the Pelee Island Winery

Abstract

Terroir describes a sense of place that can give a unique flavour to wines grown in different environments. We explored the role of soil in the terroir at Canada’s most southern vineyard, Pelee Island Winery. This study examined the abundance of major nutrients, trace and rare earth elements of minerals and plant extractable nutrients from 19 soils across the vineyard to a depth of 2 m. We found that bedrock does not influence the element content of Pelee Island soils, the parent materials of the soils are tills and there are geochemical, mineralogical and grain size differences between the two soil types on the island. Nutrient distribution throughout the soil profile was controlled by soil weathering with organic matter concentrating most nutrients in surface soils. Agricultural and anthropogenic influences had minimal effects on soil nutrient concentrations

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