Viticulture

Question 1

What is Vin de Liqueur

Answer 1

A style of fortified wine made by adding grape spirit to unfermented grape must

Question 2

What is Mistelles

Answer 2

It is another term for vin de Liqueur

Question 3

What is the average annual temperature for viticulture

Answer 3

57F or 14C

Question 4

What method do they use in vineyard to combat late frosts

Answer 4

Oil stoves also known as smudge pots are placed between vines to heat the air

Question 5

What is a natural wine

Answer 5

Wines which are made without any addition of yeast
- must be grown organically or biodynamically and should be hand harvested
- no chemicals must be added
- low level of Sulphar Dioxide must be there
- wine must be unfined and unfiltered

Question 6

What level of SO2 is permitted in natural wine

Answer 6

10mg/l in red
20mg/l in white

Question 7

What is the official term of natural wine

Answer 7

Vin methode nature

Question 8

When does Botrytis Cinerea happen

Answer 8

A rot which develops when there are early morning mists, creating humidity and afternoon sunshine

Question 9

What is other term for Botrytis Cinerea in France, Germany and England

Answer 9

Pourriture in France
Edelfaule in Germany
Noble Rot in England

Question 10

What are the effects of leaf roll virus and how is it spread

Answer 10

it is spread by infected cuttings and mealy bugs
it decreases yield, delays ripening and reduces the quality of wine

Question 11

What is Coulure

Answer 11

Non-pollination of some of the blossoms causing grapes to fall of or never develop

Question 12

How is coulure caused

Answer 12

It is caused by cold or wet weather at flowering time

Question 13

What is Esca

Answer 13

It is a devastating fungal disease which attacks trunk of the wine and will kill it

Question 14

Which vines are most susceptible to Esca fungus

Answer 14

10-20 year old wines are highly at risk

Question 15

Which countries is Esca spreading

Answer 15

Mostly European Vineyards of France, Spain, Italy and Germany

Question 16

Name other fungal diseases which affects the wood of the wine and kill it slowly

Answer 16

Eutypa, Eutypia, Dead arm disease

Question 17

What is the affect of fan leaf virus on the vine

Answer 17

It causes leaf and shoot to be deformed with poor fruit set and serious reduction in yield

Question 18

What does Flavescence Doree do to vines

Answer 18

it causes the leaf to curl and turn yellow or red, reduce yield and might kill young vines

Question 19

How is Flavescence Doree Spread

Answer 19

A bacterial disease spread by Leafhoppers

Question 20

What is Millerandage

Answer 20

A result of cold or wet weather which affects flowering resulting in poor fruit set which prevents some berries from developing. Therefore will have uneven sizes of grapes

Question 21

What is Nematodes

Answer 21

minute round worms which feed on the roots of the vine and damage them.
They are also known to transmit other virus infections

Question 22

Where did Oidium Tuckerii first originate

Answer 22

USA

Question 23

What is Oidium Tuckerii

Answer 23

AKA powdery mildew, which attacks the green parts of the vine and develops white spores that have a powdery appearance

Question 24

How does Oidium Tuckerii damage vine

Answer 24

It causes the grape to split open and fall off while others do not ripen, resulting in highly decreased yield

Question 25

What is Peronospera

Answer 25

AKA downy mildew, attacks the green parts especially the leaves which makes them fall off.
it reduces photosynthesis causing late ripening, low yields and lower sugar content in the grapes

Question 26

Where was phylloxera originated from

Answer 26

USA

Question 27

What is Phylloxera Vastastrix

Answer 27

a small aphid like bug which attacks the roots of the vine and kills vitis vinifera