Viticulture/Vinification Flashcards
What organization in France supports “La Lutte Raisonée?”
Terra Vitis
What type of sugar is produced by photosynthesis?
Sucrose
What is autolysis?
Breakdown of dead yeast cells to form lees
What is Pierce’s disease? How is it spread?
A bacterial disease that renders vines incapable of producing chlorophyll and kills them in 1-5 years. It is spread by the glassy winged sharpshooter, a leaf hopping insect
What is the temperature range required for fermentation?
50-113F
What is vendange in English?
Harvest
What can reverse osmosis be used for in winemaking? Is it allowed in EU countries?
Controlling alcohol levels
Yes, to 2%
What is the French term for pumping over the cap?
Remontage
Who was the father of biodynamic viticulture?
Rudolf Steiner
What are the three stages of the process to shape an oak barrel?
Warming (Chauffage)
Shaping (Cintrage)
Toasting (Bousinage)
What compounds are responsible for oaky aromas in wine from barrels?
Lactones
Vanillin
What is peronospora?
Downy Mildew- Fungal disease. Attacks green parts of vines and limits photosynthesis. Doesn’t survive in dry regions. Bordeaux mixture was created to combat this.
What is Bordeaux Mixture?
Spray mix of copper sulfate, water and lime. Developed in 1885 to combat downy mildew
How does the California Heat Summation Index define a typical growing season?
April 1st to October 31st
What is grey rot also known as?
Botrytis bunch rot