Biological durability of sapling wood

IRG/WP 20-10967

C Brischke, L Emmerich, D G B Nienaber, S Bollmus

Sapling-wood products from different wood species such as willow (Salix spp.) and Common hazel (Corylus avellana) are frequently used for gardening and outdoor decoration purposes. Remaining bark is suggested to provide additional biological durability. Even for temporary outdoor use it seemed questionable that durability of juvenile sapwood can provide acceptably long service lives of horticultural products. Therefore, sapling-wood from in total seven European-grown wood species was submitted to laboratory and field durability tests. In field tests, specimens with and without bark were tested in comparison and submitted to differently severe exposure situations, i.e. in ground contact, and above ground situations with and without water trapping. All materials under test were classified ‘not durable’ independently from any potential protective effect of remaining bark, which contradicted their suitability for outdoor applications if multi-annual use is desired.

Keywords: basidiomycetes, fungal decay, horticulture, juvenile wood, resistance, sapwood

Conference: 20-06-10/11 IRG51 Webinar

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