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| Chicken of the Woods by Mark Kneller To add to the knowledge of pre climbing inspection for young or new climbers I will write a series of short notes on things to look out for, from some of the decay fungi through to, and including, bark, timber characteristics and other things that we can all overlook that are all very important to our safety. The accompanying picture is of the fruiting body of Laetiporus sulphureus (Chicken of the Woods), in this case on an oak. The photograph was taken in September. This is a stem and root decay fungi,that is found on both broad leafed trees and conifers. In the early stages of an attack there is not much of a problem, but over time this fungi will slowly attacks the heart wood of a tree. With the heart wood being the main mechanical structure of a tree, this can cause a problem with wind snap or, if the root system has been infected, wind throw. The tree may not show apparent symptoms, apart from the presence of fruiting bodies. As the decay is mainly restricted to the heartwood, the sap wood can still support the foliage with the moisture and nutrients that is required as normal, thus giving a healthy appearance. Some species of tree will remain standing for many years where others may fall or snap sooner depending on timber characteristics. As you can see in the picture above this fruiting body is quite attractive at this time of year, but in the winter months it turns a whitish grey and becomes dry and brittle. Chicken of the Woods is an edible fungi, well known and widely used in German speaking areas of Europe, where it is usually parboiled and then fried. In America it is used as a popular addition to casseroles. As with most edible fungi, young specimens are the best. Above is a brief description of Laetiporous sulphurous, but before you decide that someone’s favourite tree has to come down it is advisable to seek expert advice. If the infection is in its early stage and the tree does not show significant heartwood damage then it may be practical to arrange a management plan, rather that immediate felling. Mark operates as an arborist and trainer based in Kent and undertakes a range of work for both private clients and Local Authorities. Mark is a qualified trainer offering NPTC courses in all aspects of arboriculture including the full suite of chainsaw modules and aerial platform training. He can be contacted on: 01634 244958 Email: mark@marksplants.fsbusiness.co.uk |
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