4. Grape-Growing and Related Labelling Terms Flashcards
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What 5 things does a vine need?
Warmth Sunlight Carbon Dioxide Water Nutrients
What are the four stages of grape formation (in order)?
Flowering
Fruit set
Veraison
Ripening
How are vines pollinated?
Wind
When does grape formation start?
Spring
What is Veraison?
When the grapes change from dark green to golden or purple during ripening.
When does Veraison happen?
Mid-Summer
What changes occur in the grape during ripening (5)?
Acidity decreases
Sugar increases
Herbaceous flavours decrease and signature flavours develop
Grapes swell with water
Tannins develop in the skin of black grapes
How can grape sugars be concentrated during grape growing?
Extra ripening
Noble rot/botrytis
Frozen grapes
What parts of the grape contain tannins?
Skin
Seeds
Stems
What part of the grape contains acidity?
Pulp
What parts of the grape contain flavours?
Skin
Pulp
What conditions does botrytis need to be beneficial?
Grow on ripe grapes
Ideal vineyard conditions - damp misty mornings and warm dry afternoons
What is the temperature of a cool growing season?
16.5C or below
What is the temperature of a moderate growing season?
16.5C to 18.5C
What is the temperature of a warm growing season?
18.5C to 21C