growth cycle

Question 1

What technique can be used to delay budbreak? Why would you do so?

Answer 1

Late winter pruning. Reduces risk of damage from frost

Question 2

Pour fruit set is a consequence of ____?

Answer 2

Coulure or Millerandage

Question 3

What is Millerandage?

Answer 3

a condition in which there is an excessively high proportion of seedless berries and LGO’s relative to seeded berries. AKA Hens and Chicks

Question 4

What causes Millerandage?

Answer 4

Poor weather at flowering primarily, but also Boron deficiency and fanleaf degeneration.

Question 5

What is Coulure?

Answer 5

the excessive shedding of ovaries and young berries that results in relatively few berries per bunch either during or soon after flowering.

Question 6

What causes Coulure?

Answer 6

Caused by an imbalance in the levels of carbohydrates in vine tissue. Weather conditions which reduce photosynthesis can cause Coulure, as can instances in which there is vigorous shoot growth.

Question 7

What is respiration in regards to the vine?

Answer 7

The process in which oxygen is consumed and CO2 and energy are released for vine growth and other reactions. Opposite of photosynthesis**