BRIEF SUMMARY ON THE NATURE OF COMPANY SOILS
From a geological point of view, the San Lorenzo farm is characterized by the outcrop of the Formation of Santa Fiora aged between the Upper Cretaceous and the Lower Eocene (about 40 million years ago). It is an alternation of layers of argillite (galestro) of a nutty gray color, sometimes green or shaded in red, with decimetric stone layers of limestone and fine gray limestones. These soils, following the pedogenetic processes, form medium – textured soils rich in skeleton but at the same time endowed with clayey fraction. They are shallow soils (50-70 cm) which are rich in stone elements immersed in a sandy clayey matrix; there limestone component is high and drainage moderate. These soils in agriculture generally have limited use due to the risk of erosion in hilly environment and especially for the limited thickness with the presence of abundant skeleton and
surface stony even if the matrix, rich in clay, has a high capacity to retain the infiltration water.These characteristics that are hostile to most crops in reality they enhance the quality in the production of grapes; the terrain on which the vineyards are located affects in determining the originality and typicality of the wine produced in conjunction with other factors
including the Sangiovese variety particularly suitable for these soils, the high microclimate hill with its particular regime of temperatures and rainfall. these elements are added to the altitude and exposure of the vineyards located on slopes open to the south. The company lands are mostly “Poor” in the sense that they are characterized by shallow soils not very fertile than they tend to dehydrate by attenuating their vigor of the plant during the ripening period e allowing a greater deposit of
sugars and other organic components in the berries at the expense of vegetative activity.This state of water stress, if not too accentuated, it improves the quality of the product. In these soils the root systems
penetrate through fractures of the rock and go deep for
limit the water stress of the vine even if it does surface layer dries quickly.
The presence of intercalations of clayey players with a good degree of
adsorption favors the water reserve necessary for the survival of the vine.
In addition, the high limestone content influences the color of the wine, the structure, the intensity of the aromas and a higher polyphenol content:
the wine is well structured and with intense coloring