Cation composition of contrasting soils in depth and their allocation in leaf, berry and wine of Vitis vinifera L. cv. Malbec

ROIG PUSCAMA F.; BERLI F.; PICCOLI P.

Santa Fé

Congreso; XXXIII Reunión Argentina de Fisiología Vegetal (RAFV); 2021

Sociedad Argentina de Fisiología Vegetal (SAFV)

The soil is one of the main factors that influence the cation composition in grapevine tissues and their derived wines, characterizing its origin of cultivation. In the wine-growing region of Mendoza, Argentina, a great heterogeneity of soils in terms of texture, depth, holding water capacity and chemical components is observed. Twelve cations were determined by Inductively Coupled Plasma Mass Spectrometer (ICP-MS) in a parcel with two contrasting soil depths and Vitis vinifera L. cv. Malbec. Principal Component Analysis were applied to evaluate the relationship in the cation composition of the different samples (soil, leaf, berry and wine). Although deep soils have a higher cation exchange capacity, no differences in the total content of cations between the soil types were observed, but deep soils presented higher content of Mn and K, while short soils increased in Ca. The fermentation process modified the cation content between the berry and the wine in most of the elements analyzed. Mn was the only element that differed, presenting higher amounts in the leaf, berry and wine from deep soils, so it could be suggested as a marker element for wines from this type of soil. These results indicate the importance of the soil in the concept of identity and uniqueness of wines, a concept known as terroir.