Factors Influencing Wine Production

Question 1

What are the 3 parts of a grape and what characteristics do they contribute to the making of wine?

Answer 1

• Skin: color - tannins - flavors
• Pulp: water - sugar - acids - flavors
• Stems and Seeds: tannins

Question 2

What 5 ingredients does a grape vine need to thrive?

Answer 2

• Carbon dioxide
• Sunlight
• Warmth
• Water
• Nutrients

Question 3

What are the 4 stages of grape formation and ripening?

Answer 3

• flowering
• fruit set – flowers become grapes
• véraison
• ripe grapes

Question 4

Name the 3 types of Climate and Temperatures for wine production and their Results.

Answer 4

• Cool climate - 16.5°C (62°F) or below

• less alcohol - lighter body - less tannin - more acidity
• Moderate climate - 16.5°C (62°F) to 18.5°C (65°F)
• Warm climate - 18.5°C (65°F) to 21°C (70°F)
• more alcohol - fuller body - more tannin - less acidity

Question 5

Name 5 vineyard activities for growing grapes.

Answer 5

• training and pruning
• spraying
• yield
• irrigation
• harvesting

Question 6

Name 6 weather influences on the grape growing environment.

Answer 6

• Temperature
• Sunlight
• Drought
• Rain
• Hail
• Frost

Question 7

Name 9 environmental influences on the grape growing.

Answer 7

• rivers, slopes and aspect
• cloud, fog and mist
• mountains, soils and air

Question 8

Between what latitudes are best for growing grapes?

Answer 8

• Between 30 degrees and 50 degrees - North / South

Question 9

What part of the slope is best for growing grapes?

Answer 9

• Mid-Slope

Question 10

The equation for Photosynthesis grape growing is….

Answer 10

water + carbon dioxide + sunlight = sugar

Question 11

What are the 3 necessary conditions for botrytis/noble rot?

Answer 11

• ripe grapes
• damp, misty mornings
• warm, dry afternoons

Question 12

What are the 3 Steps for producing Icewine/Eiswein?

Answer 12

1. grapes freeze on vine (winter)
2. picked while frozen
3. pressed while frozen