Viticulture and Vinification Flashcards
What is peronospera?
Downy mildew
What is Odium?
Powdery Mildew
At what stages is the vine most susceptible to frost?
Bud break and flowering
In the southern hemisphere what stage of the vine’s life cycle happens in August?
Budbreak
What is the preffered average temp for red grapes?
70 degrees
What is the minimum amount of sun needed to ripen grapes?
1300 hours
Term for bunches of grapes where some of the grape flowers fail to fertilize?
Millerandage
What is Coloure?
Shatter or when unfertilized grape embryos fall to the ground
Term for uneven ripening of grape bunches common in Zinfandel?
Asynchrony
1500 to 2000 degree days is what region?
1a
how many degree days is region 1b?
2000 - 2500
how many degree day is region II?
2500 to 3000
Haw many degree days is region III?
3000 to 3500
How many degree days is region IV?
3500 to 4000
How many degree days is region V?
4000 to 4900
Regional Climate is also known as what kind of climate?
Macroclimate
What is the climate of the particular vineyard known as?
Mesoclimate