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Master Sommelier 2025 > Viticulture and Vinification > Flashcards

Viticulture and Vinification Flashcards

1
Q

What is peronospera?

A

Downy mildew

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2
Q

What is Odium?

A

Powdery Mildew

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3
Q

At what stages is the vine most susceptible to frost?

A

Bud break and flowering

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4
Q

In the southern hemisphere what stage of the vine’s life cycle happens in August?

A

Budbreak

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5
Q

What is the preffered average temp for red grapes?

A

70 degrees

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6
Q

What is the minimum amount of sun needed to ripen grapes?

A

1300 hours

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7
Q

Term for bunches of grapes where some of the grape flowers fail to fertilize?

A

Millerandage

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8
Q

What is Coloure?

A

Shatter or when unfertilized grape embryos fall to the ground

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9
Q

Term for uneven ripening of grape bunches common in Zinfandel?

A

Asynchrony

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10
Q

1500 to 2000 degree days is what region?

A

1a

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11
Q

how many degree days is region 1b?

A

2000 - 2500

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12
Q

how many degree day is region II?

A

2500 to 3000

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13
Q

Haw many degree days is region III?

A

3000 to 3500

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14
Q

How many degree days is region IV?

A

3500 to 4000

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15
Q

How many degree days is region V?

A

4000 to 4900

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16
Q

Regional Climate is also known as what kind of climate?

A

Macroclimate

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17
Q

What is the climate of the particular vineyard known as?

A

Mesoclimate

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18
Q

Climate around the vine canopy is reffered to as?

A

Microclimate

19
Q

What is a scion?

A

Budwood

20
Q

What is Clonal selection

A

reproduction from a single vine

21
Q

What is selection Massale?

A

replanting from budwood throughout the vineyard to reinforce positive traits

22
Q

Guyot Vine train is an example of what training and pruning methods?

A

Head trained

Cane Pruned

23
Q

What is the simplest form of Vine training method?

A

Head trained spur pruned

24
Q

Name 4 terms used for head trained spur pruned vines

A

Gobelet

Albarello

En Vaso

Bush Vines

25
Q

What are the benefits of VSP?

A

can be cane or spur

26
Q

Other than Downy and powdery mildew name 2 fungal diseases?

A

Eutypa Dieback

Esca (black Measles)

27
Q

What disease concerns would you most likely have in a humid Climate?

A

Fungal

Downy and Powdery Mildew

28
Q

Name all the fungal diseases advanced by Rain?

A

Downy Mildew

Powdery Mildew

Esca Black (measles

29
Q

What effect does Downy mildew have on the Vine?

A

Causes leaves to drop off the vine

30
Q

How does powdery Mildew effect the vine?

A

Attacks all the green parts and inhibits bunch growth

31
Q

How is Eutypa Dieback Spread?

A

Pruning

32
Q

How does Esca effect the vine?

A

kills young vines and affects the wood of older vines

33
Q

Guignardia Bidwelli fungus cause what vine disease?

A

Black Rot

34
Q

VSP is ideal in what conditions?

A

Low vigor vines

High density planting

35
Q

Name 2 examples of a split canopy system?

A

Lyre

California Sprawl

Geneva double Curtain

36
Q

What is a potential problem with parallel fruit zones?

A

fruit zone ripen at different times

37
Q

Xylella Fastidiosa cases what vine malady?

A

Pierce’s Disease

38
Q

How does Pierce’s Disease effect the vine?

A

It prevents the vine from producing chlorophyll

39
Q

Tumefaciens bacterium causes what vine disease?

A

Crown Gall (black Knot)

40
Q

How does Crown Gall disease effects the vine in what manner?

A

develops tumors and strangles the vines

41
Q

Bacterial Blight effects what parts of the vine?

A

Effect young shoots

42
Q

What were the 2 Burgundy vintages most effected by Lady bugs in the last 25 years?

A

04 and 11

43
Q

What is debourrement?

A

Budbreak

Master Sommelier 2025 (32 decks)

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