San Luigi
Vineyards in the township of Dogliani
Variety cultivated:
Viognier and dolcetto
Geological origins
Geological era:
Tertiary Piedmont Basin of the Miocene
Prevalent geological period:
Tortonian-Serravallian
Prevalent geological formation:
Lequio Formation, characterized by grey calcareous marl alternating with layers of sand or sandstone (“Langhe Stone”). Its exposition and gradient have allowed the terrain to evolve towards a lighter color on the slopes where erosion was greater, and darker terrain where soil has accumulated.
Soil type and characteristics conferred to the wines
Sand | 27% |
Loam | 50% |
Clay | 23% |
Granulometric index | 0.36 |
pH level | 8.0 |
From an analytical point of view, the terrain is loamy and shallow in the medium-high area, with marl emerging from the greater erosion on the more-exposed slopes. The granulometric index (ratio of sand / Loam + Clay) indicates a soil structure created from very fine roots, with more loam and clay than sand. This terrain gives wines made from grapes cultivated in its soils structure, finesse, and complexity.
Prevalent sun exposure of the slopes and average heights
Height in meters asl | Min: 390 Max: 430 Average: 410 |
Prevalent sun exposure | West / Southwest |
Average gradient | 22% |
Average age of vines
38 years
Density of vines
5.000 vines per hectare
Cultivation system
Guyot
Yield
90 quintals per hectare
Vineyard surface area
1.70 hectares (4.20 acres)