The soil:

it is an essential element because its physical - chemical diversity could influence a typology of grape rather than an other. A clayey soil, for example, is essential for the red grapes, on the contrary the prevalence of dolomite sand, of calcium carbonate and magnesium, helps flavoured, refined and vintage white wines. Besides physical - chemical, very important are the chemical characteristics; normally a soil that produces wine has not to be excessively alkaline because with an high ph ( acidity measure), over 8, the micro - elements necessary for the vine jam and they are not absorbed from the radical apparatus of the vine and the plant notices its lack through a reduced development and with leaves manifestations.