Terrior and Viticultural Zoning Flashcards
Terrior definition
includes specific soil, topography, climate, landscape characteristics and biodiversity features of a specific area
What the terrior definition excludes (4)
- Ranking among different terroirs and neighboring vineyards
- Commercial constraints
- Appellation by origin and Yield limitation.
- Limitation to entrepreneurial spirit
Define viticultural zoning
the study of a geographical area aiming to characterize homogeneous zones showing a similar viticultural and ecological potential
what are the three territorial deliminations
- Climate based classifications
- Soil based classification
- Ecological classifications
Zoning part 1 what it allows for
- Improve the knowledge of a territory based on climactic, geological, and soil variability
- Understand which factors affect the fruit composition and consequently the quality of wines from a given territory
- Discover a different varietal performance/profile when growing in different environments
Zoning part 2 what it allows for
- Discover areas where top-quality wines can be produced
- highlight areas with low or very low wine-growing potential
What are the Four steps for developing viticultural zoning
- Preliminary studies
- Climactic characterization Terrior
- Soil Characterization
- Interactions between genotype and TERROIR
Four steps of the preliminary Studies
- Find out historical information referred to the area;
- Study of the cartography;
- Study of historical series of climatic data;
- General knowledge of the area.
5 Steps for Climactic characterization terrior
I, I, C, E, D
- Identification of existing weather stations;
- Integration with new stations installed in representative sites of the area (es.: top or valley bottom);
- Calculation of bioclimatic indices Winkler, Huglin;
- Extension of bioclimatic indices to the whole territory using a statistical model that takes into account topography (DEM);
- Drawing a climatic map.
6 parts of Soil characterization
S, C, D, D, C, D
- study of the existing soil map;
- comparison and overlapping with the soil use map;
- Description of «Landscape units» concerning, slope, aspect and soil composition
- Digging and description of soil profiles in different landscape units (UP) and soil characterization according to the international Soil Taxonomy
- chemical and physical analyses of soils sampled at different depth
- drawing of landscape unit maps.
6 Parts to Interactions between genotype and TERROIR
S, T, M, S, W, D
- Selection of at least two representative vineyards in each UP, having similar traits
- Three-year monitoring of phenology, plant growth, yield and fruit composition of each studied variety
- Microvinification processing a sub-sample of fruit
- Statistical treatment
- Wine sensory analysis, and description of distinctive profile
- Description of the winegrowing and enological potential of each UP and delimitation of GRAPE AND WINE TERROIRS represented on a map.