BLACK GOO Flashcards
1
Q
Also known as
A
Petri disease
2
Q
What vines are affected and how?
A
- nursery and old vines
- decline and dieback
3
Q
Causative factors
A
- soil prep
- planting of vines
- fertilization
- irrigation
4
Q
External symptoms
A
- delayed or no budding
- yellowing of the canopy
- stunted shoot growth
- overall die back
5
Q
Internal symptoms
A
-abnormalities of vascular tissue
xylem discoloration (brown/black)
-dark-brown wood tissue ( soft wood decay) in the pith
6
Q
Precursors for…
A
Esca (trunk disease complex)
