Wine Viticulture Flashcards
Continental climates
Strong annual variation of temperature, lack of proximity to significant bodies of water which can moderate the climate,
Hotter summers then maritime climates cold winters can be extreme
Maritime climate
The climate is really influenced by a large body of water or C
Mild temperatures but also involving fluctuations from year-to-year causing vintage variation
Mediterranean climate
Summers are hot and dry aside from the coastal areas
Along the coast’s summers are mild due to the proximity of the water temperatures
High desert
Summers are hot and dry
Daytime temperatures are high but Drammatic drops at night.
Example ofSAN lucar de Barrimade in Spain for Sherry production
Diurnal shift
This is the difference between the average daytime high and night time low temperatures. It is important for ripening grapes and balancing sugar and acidity
Climate moderators there are five of them
Bodies of water can warm or cool wine region.
Mountains can protect a wine region from weather and climate influences
A rainshadow, dry area on one side of the mountain opposite the wind rain and generally poor weather.
Altitude and elevation, with every metre rise in elevation temperatures drop by 1° however, in hot areas increased elevation provide cooler temperatures that slow creep ripening and produced more balanced wine.
Wind wind can cool a growing region if originating over cool ocean waters or lend warm and dry air if originating from a desert. Preventing mould or rot
Topography
There are 4 key elements
Local elevation and altitude, temperature decreases as elevation increases.
Is vineyard on a hillside or valley floor, steeper hillsides provide better draining, plus fer tile, and cool air increases as you go up the elevation,
Valley floor can have pooling of air, susceptible to frost. And overly for tile soil.
Aspect, slopes facing the sun during the day or warmest and away from the sun or coolest.
Proximity to water
Three important aspects of soil types.
Drainage, water retention, sun reflection
Different soil types
Granite Limestone Marl Schist Clay Sand Gravel Silt
What are the Different aspects to a grape.
Skins add color, tannins, and the most important aromas and flavours are in the skin
The pulp contains water, sugars which increase as grapes ripen,
Acids which decreases as grapes ripen,
Seeds and pips Give bitter flavour
Who founded the ac system in France
Joseph Capus in 1935
He found the Comte national des appellation d’origine
What is QWPSR
Quality wines produced in a specific area, it is a European union way of protecting wine regions
What are some ways to manage a vineyard
Canopy management or pruning Irrigation Pasts and disease control Fertilizers Antifungal treatments For example, the disease known as phylloxera almost destroyed all grape vines in the mid-1800s
Factors to determine the redness of the grape
Time of picking
Grape maturity, sugar ripeness, ripeness of the bunches including their stems and seeds
Tannin ripeness
What is autolysos
Sur lis
It is when yeast cells die and release flavour back into the wine