Grape Growing and Labelling Terms Flashcards
What are the 4 stages of Grape formation/ripening?
Flowering
Fruit Set
Veraison
Ripening
What is Veraison?
The point at which the grapes start to lose their dark green color, starting the ripening process (white grapes turn gold and black grapes turn red then purple)
What 6 things does a vine need?
warmth, sunlight, carbon dioxide, water, nutrients
What is the process called in which the vine produces sugars?
Photosynthesis
Which parts of the grape contain tanins?
Stem, seeds, and skins (but in lower amounts than the stem and seeds)
What is botrytis?
A fungus that grows on the skin of ripe grapes causing noble rot. It makes tiny holes on the skin causing water inside the grape to evaporate and concentrating the flavours.
What are the ideal conditions so that botrytis doesn’t destroy grapes?
1) the fungus must grow on ripe grapes
2) the vineyard must have damp, misty mornings to allow fungus spread followed by warm, dry afternoons to limit fungus growth
When is the growing season?
April to Oct in the Northern Hemisphere and vice versa in the South
What defines a cool growing climate?
Average growing season temperature of 16.5 C or below (62 F)
What defines a moderate growing climate?
Average growing season temperature between 16.5 and 18.5 C (62 - 65 F)
What defines a warm growing climate?
Average growing season temperature between 18.5 and 21 C (65 - 70 F)
True or False: Grenache can only successfully grow and ripen in areas with a warm climate.
True
What are the topical moderating influences on climate?
Rivers Slope Aspect Cloud Fog Mist Mountains Soil Air
General climate of an area is impacted by…
Latitude, Altitude, Seas
What are the day-to-day weather influences on grape production?
Temperature Sunlight Drought/Rain Hail Frost
When are grapes pruned?
While dormant in winter