Viticulture

Question 1

The stage after Winter Dormancy

Answer 1

Weeping

Question 2

What comes next?
Winter Dormancy
Weeping

Answer 2

Bud Break

Question 3

What comes next?
Winter Dormancy
Weeping
Bud Break

Answer 3

Shoot & Leaf Growth

Question 4

What comes next?
Winter Dormancy
Weeping
Bud Break
Shoot & Leaf Growth

Answer 4

Photosynthesis Begins

Question 5

What comes next?
Winter Dormancy
Weeping
Bud Break
Shoot & Leaf Growth
Photosynthesis Begins

Answer 5

Flowering

Question 6

What comes next?
Winter Dormancy
Weeping
Bud Break
Shoot & Leaf Growth
Photosynthesis Begins
Flowering

Answer 6

Berry Set

Question 7

What comes next?
Winter Dormancy
Weeping
Bud Break
Shoot & Leaf Growth
Photosynthesis Begins
Flowering
Berry Set

Answer 7

Veraison

Question 8

Winter Dormancy
Weeping
Bud Break
Shoot & Leaf Growth
Photosynthesis Begins
Flowering
Berry Set
Veraison

Answer 8

Phenolic Maturity

Question 9

What is the last stage before the grape vine goes back into Winter Dormancy?

Answer 9

Harvest

Question 10

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

Answer 10

Translocation

Question 11

The process by which sunlight is converted into sugar

Answer 11

Photosynthesis

Question 12

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

Answer 12

Transpiration

Question 13

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

Answer 13

Respiration

Question 14

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

Answer 14

Coulure

Question 15

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

Answer 15

Nematode

Question 16

A mind that is sometimes beneficial, also known as noble root

Answer 16

Botrytis Cinerea

Question 17

A fungal disease also known as Powdery Mildew

Answer 17

Oidium

Question 18

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 18

Millerandage

Question 19

A fungal disease also known as Downy Mildew

Answer 19

Peronospora

Question 20

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

Answer 20

Pierce’s Disease

Question 21

A destructive louse that feeds off the roots of vinifera vines

Answer 21

Phylloxera

Question 22

Term for the actual meteorological conditions experienced in a place

Answer 22

Weather

Question 23

Term for the historical average weather of a place

Answer 23

Climate

Question 24

How much water do grapevines need on an annual basis?

Answer 24

20-30 inches

Question 25

Soils with ______ fertility are generally ideal for commercial vineyards

Answer 25

Low

Question 26

Place these four soil types in order, from smallest particle size to largest:
• Gravel
• Silt
• Clay
• Sand

Answer 26

Clay
Silt
Sand
Gravel

Question 27

T / F
In general, a lower latitude translates into a warmer climate

Answer 27

True

Question 28

T / F
The Oeschle system of measuring grape ripeness is widely used in France

Answer 28

False

It’s used in Germany

Question 29

T / F
Photosynthesis slows, but does not stop, at night

Answer 29

False

It stops at night

Question 30

T / F
The annual growth cycle of the vine is considered to begin each year with bud break, which starts once temperatures reach 65F (18C) in the spring

Answer 30

False

It begins when temperatures reach above 50F with Weeping

Question 31

T / F
When producing dry table wines, the typical time from bud break to harvest is 140-160 days

Answer 31

True

Question 32

T / F
Ideally, soil should enable the vine’s roots to access water when needed, but also ensure that excess water is drained away

Answer 32

True

Question 33

T / F
In the Northern Hemisphere, a vineyard on a slope that faces north gets the most sun

Answer 33

False

A south-facing vineyard gets the most sun

Question 34

T / F
Regions with a continental climate generally experience hotter summers and colder winters than regions with a Mediterranean climate

Answer 34

True

Question 35

T / F
Transpiration is the process by which water evaporates through openings on the underside of the leaves known as stomata

Answer 35

True

Question 36

T / F
A Mediterranean climate is considered to have too short of a growing season in order for grapes to ripen on a regular basis

Answer 36

False

A Marginal climate is being referred to

Question 37

T / F
In general, sugar as measured by degrees Brix will convert to alcohol by a conversion factor of 55%

Answer 37

True

Question 38

T / F
Photosynthesis tends to slow down at temperatures below 50F/10C

Answer 38

True

Question 39

T / F
A refractometer is used to measure the amount of rainfall that penetrates the topsoil to a depth of 6 inches (15cm)

Answer 39

False
A refractometer is used to measure grape sugar

Question 40

T / F
Head-trained vines - sometimes referred to as gobelet-style vines - do not typically require vine trellis systems

Answer 40

True

Question 41

_________ can only occur when the sun is shining

Answer 41

Photosynthesis

Question 42

In general, how much water do vines need on an annual basis?

Answer 42

20-30 inches

Question 43

The grapes begin a sudden acceleration toward maturation and begin to take on color

Answer 43

Veraison

Question 44

Considered to be the ideal latitudes for commercial wine grape growing in both the Northern and Southern Hemispheres?

Answer 44

Between 30 - 50 degrees

Question 45

Vineyard disease easily spread by the glassy-winged sharpshooter?

Answer 45

Pierce’s disease

Question 46

What vine condition is sometimes beneficial, and may be referred to as “noble rot”?

Answer 46

Botrytis

Question 47

A vine metabolic process in which sugar is broken down and converted into biological energy

Answer 47

Respiration

Question 48

The temperature that signals bud break in the spring

Answer 48

50F (10C)

Question 49

The soil type with the smallest particle size

Answer 49

Clay