Grapes and Viticulture

Question 1

The main grape species used for winemaking

Answer 1

Vitus Vinifera

Question 2

Common term for grape subspecies

Answer 2

Variety

Question 3

Term used for offspring created using typical reproduction of two varieties within the same species

Answer 3

Cross or Crossing

Question 4

Term used for offspring created using typical reproduction of two varieties of two closely related, but different species

Answer 4

Hybrid

Question 5

Term used for a subspecies of Vitus Vinifera

Answer 5

Variety

Question 6

Term use for an asexually reproduced vine that has modified itself to be slightly different from its parent

Answer 6

Clone

Question 7

Term used for an offspring that has developed different characteristics through imperfect reproduction of cells as it grows

Answer 7

Mutation

Question 8

Term used for a vine’s branches when they are young and pliable

Answer 8

Canes

Question 9

Age in which grapevine declines in vigor

Answer 9

20 years

Question 10

Ideal degrees of latitude for viticulture

Answer 10

30-50 parallel

Question 11

Minimum temperature required for budbreak

Answer 11

50 degrees F

Question 12

Ideal weather conditions for flowering

Answer 12

warm and dry (rain and wind can hinder flowering)

Question 13

Term used for the transition from flower to berry

Answer 13

Berry set or fruit set

Question 14

Condition where many flowers do not develop into grapes

Answer 14

Shatter (Coulure)

Question 15

Abnormal fruit set with many small, seedless berries

Answer 15

Millerandage

Question 16

Ripening of grapes

Answer 16

Veraison

Question 17

Typical time from budbreak to harvest

Answer 17

140-160 days

Question 18

Process in which sunlight is used by the vine to create sugar

Answer 18

Photosynthesis

Question 19

Process by which water evaporates through the leaves

Answer 19

Transpiration

Question 20

Process by which sugars are broken down by the vine as energy

Answer 20

Respiration

Question 21

Process by which materials are moved from one location of the plant or vine to another

Answer 21

Translocation

Question 22

Average annual needs of water for a grapvine

Answer 22

20-30 inches

Question 23

Bacterial disease of the glassy-winged sharpshooter

Answer 23

Pierce’s Disease

Question 24

Fungal disease known as odium

Answer 24

Powdery Mildew

Question 25

Fungal disease known as Peronospera

Answer 25

Downy Mildew

Question 26

Type of vine where there is no trellis system

Answer 26

Head training or bush trained vines

Question 27

Type of vine training where vines are by a tall trained

by a tall support

Answer 27

Pergola

Question 28

Type of cane-pruned vine training system using one cane from each vine

Answer 28

Guyot system

Question 29

Type of spur-trained vine system with branches of each vine trained along a wire

Answer 29

Cordon

Question 30

VSP

Answer 30

Vertical Shoot Positioning

Question 31

Unit of value for ripeness in grapes in the US

Answer 31

Brix or 5/9 (55%) of sugar level to ABV

Question 32

Unit of value for ripeness in grapes in Germany

Answer 32

Oechsle (density-1.000)x 1000

Question 33

Unit of value for ripeness of grapes in France

Answer 33

Beaume

Question 34

Unit of value for ripeness of grapes in Austria

Answer 34

Klosterneuburger Mostwaage (KMW)

Question 35

A pest that feeds on roots of shallow-rooted vines that transmit diseases and eventually kills the vine

Answer 35

Nematode

Question 36

Budbreak continues at what temperature F?

Answer 36

50 degrees F

Question 37

Flowering takes place how many days after budbreak?

Answer 37

40-80 days

Question 38

Date of harvest from veraison?

Answer 38

Approximately 20 months

Question 39

Time period between bud break and harvest

Answer 39

140-160 days average- as little as 110, as many as 200.