Temperature

Question 1

Viticulture

Answer 1

Winter:

• Vine dormancy:
• In Germany, Eiswein can’t legally be harvested until temp drops below -7C

Spring:
- vines start waking up after 50F

Summer:
- photosynthesis stops above 95F

Fall:

Question 2

Vinification

Answer 2

• Pierre Peters starts his fermentation at 13C (55.5F), keeps must between 13-15C until yeast population grows, then raises to 18C. When nearly done, raises to 20C.
• At Ch Ste Michelle the white barrels (no control) ferm from 20-23C (68 - 73.5F)

Question 3

Water body moderating

Answer 3

Dr. Ernie Loosen says on his steep slopes, things are far more temperate near the river, up the top of slope “barely warm enough to ripen potatoes”

FLX