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.