EUTYPA DIE BACK

Question 1

Also known as

Answer 1

Tandpyn

Question 2

Causative organism

Answer 2

Eutypa lata

Question 3

Age of grapevines affected

Answer 3

10 y

Question 4

Explain characteristics

Answer 4

-shoots with small internodes develop

• small, semi-transparent, pale green to yellow leaves in bush-like format
• -necrotic leave edges occasionally

Question 5

Development of a Eutypa infected vine

Answer 5

• no bunches
• flower clusters dry out and die back if they formed
• if they develop into berries large and small berries occur in loose bunches

Question 6

Eutypa is associated with

Answer 6

gradual internal distribution and deterioration of grapevines

Question 7

Explain the internal appearance of infected organs

Answer 7

Rotting patterns in a V-shaped occurrence of necrotic wood stretching from bark to core forming a boundary with healthy wood

deadwood is hard