A short update on Chalara ash die back, since it was first officially recorded in 2012 in England.
It is believed to have arrived in the UK through airborne spores and also on infected plant material.
Below we have highlighted some key points for consideration when considering Ash Die Back :
SPREAD- It is spread through airborne spores produced from fruiting bodies which emerge on infected leaf litter.
SYMPTOMS – Please see the printable guide attached to this email produced by the Forestry Commission which highlights symptoms to look out for.
CURE- There is no known cure at present however, research suggest that 1-5% of the ash population will be resistant. This is key when considering the management of ash trees within your sites or gardens and retaining healthy ash trees wherever possible.
DECLINE- Speed of decline of infected ash trees can be influenced by several factors. From what we have noted personally across Devon, there has been a notable decline since last year with symptoms evident across a high volume of ash within the County.
CUT MATERIAL- At present there is no restriction on the movement of cut material from site. However, the movement of woodchip containing infected leaf material may need to be considered.
Devon Tree Services stance on Ash Die Back:
We are committed to making our staff aware of the key issues surrounding Ash Die Back to give you the best advice possible.
We will promote the retention of important healthy ash trees wherever the site conditions allow. Options such as pruning out infected material or detailed condition surveys can be used to preserve important infected trees, which may survive into the long term.
Due to the way Ash Die Back is spread we will always advise that cut material can be dealt with in the following ways:
– Larger wood can be removed from site at a low risk of spreading the disease.
– Infected leaf material can be chipped as normal however consideration needs to be given to the removal of this due to the increased likelihood of spreading the disease. We can offer the following options:
– Undertake tree works when the tree isn’t in leaf, during the dormant season subject to the condition of the tree and the risk it poses;
– Burn cut material on site if conditions allow;
– Contain woodchip on site; or
– Controlled removal of the woodchip/leaf material back to our yards to be quarantined for at least a year.