Terroir Flashcards
What temperature mean does the vine prefer?
annual level between 50 and 68 F. Ideal 57 degrees
To successfully ripen what average summer temperature do red and white grapes require?
White-66 F
Red-70 F
In the California Heat Summation Index, which region is the coolest and which is the hottest?
Region 1 is coolest and Region 5 is hottest
What is the California Heat Summation Index?
A scale that divides climates into five regions based on the number of degree days
How are degree days calculated?
Multiplying the days in each month of the growing season (April 1-October 31) by the mean number of degrees over 50F for that month. The months’ totals are then added together to arrive at the heat summation.
What is the min amount of sunshine hours to support Viticulture?
1,300 hours
The vine evolved as a drought resistant plant, but still requires approximately how much rainfall annually?
20-30 inches
What is Terroir?
The complete system of the living vine
What is Macroclimate?
Regional climate
What is Mesoclimate?
Vineyard climate
What is Microclimate?
Climate in and around a vine canopy
Most of the worlds vines are grafted on what type of rootstock?
American
The vine will not be produce a crop suitable for grapes to harvest until what year?
Third
When is the grapevine considered mature?
sixth year
