The Forestry Commission Research Disease Diagnostic Advisory Service 01420 23000 firstname.lastname@example.org
Ash Dieback Disease is caused by a fungus. The symptoms are leaf loss and obvious crown dieback and the disease will probably lead to the death of a tree. The features to watch out for are wilting and blackish-brown discolouration of the leaves, small lens-shaped legions or necrotic spots on the bark which enlarge to form canckers and then the wilting and death of shoots and branches, especially in the upper crown of the tree. The disease is probably spread by insects, rain splash and by the movement of leaves, twigs and branches from diseased trees. Frost can cause some of the same early stage symptoms.
Ash is a prevelant species in the broadleaf woodlands of the the limestone upalnds in the Yorkshire Dales, so we should be extra vigilant in order to try to stop it spreading. If you have ash trees in your churchyard, please inspect them regularly and please clean boots, equipment and tyres that have been in the churchyard well. It is recommended that you do not take equipment used in one place where there are ash trees into another woodland within 24 hours. You should also clean dogs who have walked near ash trees carefully.
There is information at
www.forestry.gov.uk/planthealth (put ash dieback into the search box)
www.defra.gov.uk/fera/plants/planthealth (put 'ash dieback' into the search box)
Our Diocescan Property Office has issued the following advice:
guidance is received from the government.