Thursday 25 October 2012

DISEASES AND PESTS

 
 
What's next ???
 
 
Not so long ago it was the  Asian longhorn beetle- A wood-boring insect that can cause extensive damage to a range of urban and forest broadleaved trees that we had to worry about now its Chalara dieback that affects Ash trees. 
 
Chalara dieback of ash is a serious disease of ash trees caused by a fungus called Chalara fraxinea. The disease causes leaf loss and crown dieback in affected trees, and it can lead to tree death.  It has already
  wiped out 90 per cent of ash trees in Denmark in seven years and is becoming widespread throughout central Europe.
 
Almost a third of British woodland is ash.
 
Already the fungus has been compared to Dutch elm disease that decimated elms in the 1970s.
 
According to the forestry commission website - The UK Government is preparing to impose restrictions on imports and movements of ash plants and seeds into and within Great Britain. These could come into force as early as next week. Meanwhile the Horticultural Trade Association has also encouraged its members to voluntarily stop importing ash plants until the disease situation has been clarified.