plum pox Flashcards
1
Q
is this disease bacterial, fungal or viral? what is the other name for it?
A
viral, also known as ‘Sharka’
2
Q
what plants does it affect?
A
plums
damsons
peaches
blackthorn
3
Q
what plant is immune to it?
A
cherries and flowering cherries
4
Q
what are the symptoms?
A
faint inter-veinal yellow blotches on leaves from centre of infected tree
sunken dark blotches on fruit
5
Q
what spreads the virus?
A
aphids
6
Q
controls of the virus are?
A
preventative only.
use aphid-controlling insecticides in late spring, summer and autumn
use certified planting stock
report infected trees
