Viticulture

Question 1

What type of disease is Oidium?

Answer 1

Fungal
Powdery mildew
Downy mildew

Question 2

When embryos berries “shatter” and fall off the cluster what is it called ?

Answer 2

Coulure

Question 3

What is Millerandage?

Answer 3

also known as “hens and chicks,” is a viticultural issue where grape bunches contain berries of varying sizes, with some being normal-sized while others are smaller and seedless.

Question 4

What is a vine scion?

Answer 4

Grafted vines consist of an above-the-ground portion called the scion, which is joined to the rootstock at the graft union
Determines Varietal

Question 5

The area where a shoot spurs off from the cane is called a what?

Answer 5

Node

Question 6

The Area between the nodes is?

Answer 6

Internode

Question 7

What are laterals

Answer 7

side shoots sprouting off the main shoot

Question 8

Laterals are non fruiting but may form clusters called ___________?

Answer 8

Second Crop

Question 9

T or F, Dormant buds never produce fruit?

Answer 9

False,
they usually do in future vintages and are very fruitful

Question 10

What are the stems called that connect the leaf to shoot?

Answer 10

Petioles

Question 11

How many clusters will a vine possess?

Answer 11

1-3

Question 12

The stem of the cluster is called the _________

Answer 12

Rachis

Question 13

What is the waxy coating that protects the berry from disease

Answer 13

Bloom

Question 14

What is the study of identifying grape varieties based on morphology?

Answer 14

Ampelography

Question 15

What are the vines leaves called? Absorb and act like veins to feed the plant

Answer 15

Stomates

Question 16

What is the Ravaz Index for viticulture

Answer 16

Helps balance the vine
Fruit ratio to Pruning ratio
4 to 10 is balanced

Question 17

What is the target range for shoot length and # of internodes?

Answer 17

4 foot shoots
3-4 internodes

Question 18

What is a Teinturier

Answer 18

Grape who’s pulp is red in colour

Question 19

Name the three Proles that vinifera are organized into

Answer 19

Proles Pontica- Aegean / Black Seas
Proles Occidentalis- Western Europe
Proles Orientalis- Middle east

Question 20

At what temperature do most grapevines begin to shut down to conserve water?

Answer 20

95-105 F
35-40 C

Question 21

What is Drosophila Suzukii

Answer 21

Fruit fly- causes sour rot
Burgundy 2014 Vintage

Question 22

What do you call the iron rich clay shared by many wine regions, similar to Terra Rossa

Answer 22

Ferruginous

Pomerol, France Crasse de fer Merlot, Cabernet Franc

Coonawarra, Australia Terra Rossa Cabernet Sauvignon

Rioja, Spain Arcillo-ferroso Tempranillo, Garnacha

Rheinhessen, Germany Rotliegend Riesling

Willamette Valley, USA Jory Pinot Noir

Burgundy (Pommard), France Ferruginous Marl Pinot Noir