Saturday, 10 June 2017

Ash die-back in the Sid Valley

Horse Chestnuts are finding it particularly tough:
Futures Forum: Horse Chestnut canker in the Sid Valley

Unfortunately the same is happening to the ashes:
Ash dieback | Devon Wildlife Trust
East Devon Area of Outstanding Natural Beauty - Ash trees need your help

It's particularly pressing for the County, as reported by Natural Devon:

There are nearly half a million ash trees alongside Devon’s roads.
Ash is Devon’s second most frequent hedgerow tree.


The County Council supports the DEFRA management plan:

The management plan predicts the ‘risk of infection by 2017’ as low for Devon. It is believed that the disease has spread from the continent by air and therefore south-east England has high and medium risk of infection. Devon is classed as having a high ‘hazard value’ due to the high amount and value of ash in the county. These two measures combine to class Devon as a ‘high priority area’ where interventions, such as removing young infected plants, are most likely to be cost effective. Therefore, Devon is one area where Defra and the Forestry Commission inspectors are focusing their efforts by tracing recent deliveries of young ash trees and checking for signs of infection.

The Forestry Commission has produced an advice note on ‘Managing Chalara dieback of ash in South West England’This provides a useful source information to guide the actions taken by all those involved in the care and management of trees and woodlands.

Ash dieback looks set to have a major impact on Devon’s countryside, much of which is defined by its rich networks of hedges. Ash is one of our three main hedgerow trees, along with oak and beech, and makes up about one sixth (16%) of their shrubby growth. If the ash goes, and evidence from the continent suggests we will lose 90% of them, then our landscape will change dramatically.

Ash dieback | Environment

The Sidmouth Arboretum's Ed Dolphin writes about the disease in the Sid Valley:

Further to the horse chestnut canker in the Knowle, in the picture I sent there is a tall ash tree behind it across Station Road.  

It was not in full leaf that early but now that it should be in full leaf it appears to have significant die back in the crown.

Sidmouth Arboretum

The Arboretum's survey highlights the need to replant:
Futures Forum: i-Tree surveys in Sidmouth, Torbay and London >>> and how they can help us chose which trees to plant

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