flashcards
(399 cards)
Sunburn can lead to the development of bitter flavors in grapes. True or False
True
What are nematodes
Microscopic worms that attack the roots of the vine.
Once a vineyard has been infected with a virus, what are the options for eradicating the virus?
Dig up the vineyard and sanitize the land.
Why might a grape grower choose to trellis a vineyard?
To increase the amount of sunlight that gets into the canopy. To aid mechanization in the vineyard. To improve air circulation through the leaves and grapes.
What is another name of Guyot training is another name?
replacement cane
What equipment or techniques can help protect vineyards from spring frost?
Heaters and planting on slopes.
Is higher or lower density planting more suitable for a vineyard that is close to the coast and receives high levels of rainfall throughout the year, although the soil fertility is low.
Higher density planting.
Is higher or lower density planting more suitable for a vineyard that is inland in a hot region that receives very limited rainfall and has limited irrigation water available
Lower density planting.
Above what mean daily temperature does budburst usually start?
50 degree
What is the purpose of summer pruning?
To restrict the vegetative growth of the cine and direct sugar production to the grape.
What is the purpose of winter pruning?
To determine the number and location of the buds that will form shoots in the coming growing season.
What are some advantages of supporting biodiversity in the vineyard?
It provides habitats for predators of vine pests. It provides additional nutrients for vines. It captures CO2.
Which aromas and flavors result from deliberate oxidation?
Almond, caramel, toffee.
Which aromas and flavors result from fermentation or maturation in oak?
Cloves, coconut, and vanilla.
When the winemaking process is protected from the effects of oxygen, it is called ___ winemaking?
Anaerobic
Is the principal yeast involved in alcoholic fermentation tolerant of high level of sulfur dioxide?
Yes.
What challenges do winemakers face when using oak barrels?
They are expensive and they are difficult to clean.
What acid is used for acidification?
Tartaric acid
In red wine making, what is done right after fermentation?
Pressing
In what climates is sugar a problem?
Cool climates.
What yeast is used in commercial wine making?
Saccharomyces cerevisiae
What kind of bacteria carry out MLC?
Lactic acid bacteria
Why might a winemaker choose to keep lees in contact with wine?
To add additional flavors and to add texture.
Can blending occur at any time during the winemaking process?
Yes.