Viticulture

Question 1

Put the stages of the annual growth cycle of the vine in chronological order. Include winter dormancy and weeping.

Answer 1

Winter Dormancy, Weeping, Bud break, shoot and leaf growth, photosynthesis begins, flowering, berry set, veraison, phenolic maturity and harvest

Question 2

The process by which materials are moved from one part of the plant to another

Answer 2

Translocation

Question 3

The process by which sunlight is converted into sugar

Answer 3

Photosynthesis

Question 4

The process by which water evaporates through openings on the underside of the leaves

Answer 4

Transpiration

Question 5

The process by which sugar is broken down and converted into biological energy

Answer 5

Respiration

Question 6

A problem that causes poor fruit set, also known as shatter

Answer 6

Coulure

Question 7

A soil-based roundworm that has become more prevalent with the increased use of shallow-rooted rootstock

Answer 7

Nematode

Question 8

A mold that is sometimes beneficial, also known as noble rot

Answer 8

Botrytis Cinerea

Question 9

A fungal disease also known as powdery mildew

Answer 9

Odium

Question 10

A problem with abnormal fruit set that causes grape bunches to have a high proportion of small, seedless berries mixed in with normal, larger berries

Answer 10

Millerandage

Question 11

A fungal disease also known as downy mildew

Answer 11

Peronospora

Question 12

A bacterial disease spread by insects such as the glassy-winged sharpshooter

Answer 12

Pierce’s Disease

Question 13

A destructive louse that feeds off the roots of vinifera vines

Answer 13

Phylloxera

Question 14

True of False: In general, a lower latitude translates into a warmer climate

Answer 14

True

Question 15

True of False: The Oechsle system of measuring grape ripeness is widely used in France

Answer 15

False (Germany)

Question 16

True of False: Photosynthesis slows, but does not stop at night

Answer 16

False (Photosynthesis needs sunlight)

Question 17

True of False: The annual growth of the vine is considered to begin each year with bud break, which starts once temperatures reach 65F in the spring

Answer 17

False (50F)

Question 18

True of False: When producing dry table wines, the typical time from bud break to harvest is 140 to 160 days

Answer 18

True

Question 19

True of False: Ideally, soil should enable the vine’s roots to access water when needed, but also ensure that excess water is drained away

Answer 19

True

Question 20

True of False: In the Northern Hemisphere, a vineyard on a slope that faces north gets the most sun.

Answer 20

False (Vineyard facing south)

Question 21

True of False: Regions with a continental climate generally experience hotter summers and colder winters than regions with a Mediterranean climate

Answer 21

True

Question 22

True of False: Transpiration is the process by which water evaporates through openings on the underside of the leaves known as stomata

Answer 22

True

Question 23

True of False: A mediterranean climate is considered to have too short a growing season in order for grapes to ripen on a regular basis

Answer 23

False (Marginal Climate)

Question 24

True of False: In general, sugar as measured by degrees Brix will convert to alcohol by a conversion factor of 55%

Answer 24

True

Question 25

True of False: Photosynthesis tends to slow down at temperatures below 50F

Answer 25

True (Optimal temps: 70-85F

Question 26

True of False: A refractometer is used to measure the amount of rainfall that penetrates the topsoil to a depth of 6 inches

Answer 26

False (Refractometer measures the Brix (grape sugars)

Question 27

True of False: Head-trained vines sometimes refereed to as a goblet-style vine, do not typically require vine trellis system.

Answer 27

False (Head-trained vines are typically free standing and do not require a support system)

Question 28

Vine training process by which the new year’s shoots and leaves are trained upward and braced by trellis wires as they grow

Answer 28

VSP (vertical shoot positioning)

Question 29

Who developed The philosophy of biodynamics in the 20th century

Answer 29

Rudolf Steiner

Question 30

The natural aspects of a vineyard

Answer 30

Terroir

Question 31

System used in Germany and Switzerland to measure sugar density

Answer 31

The Oechsle

Question 32

Physical maturity refers to the level of

Answer 32

Sugar Maturity