Establishing the comparative durability of African mahogany (Khaya senegalensis) in weather exposed above-ground applications
This research reports the results from the first year of ongoing research into the natural above-ground durability of plantation grown African mahogany (Khaya senegalensis). The study is through the Queensland Government’s Department of Agriculture, Fisheries and Forestry
Samples of timber from 10- and 20-year old trees are being tested in two test sites, one a fungal cellar laboratory and the other a field site in north Queensland in a region known to present a very high decay hazard.
The African mahogany samples are also being compared with control samples from spotted gum (Corymbia citriodora) durability class 1, jarrah (Eucalyptus marginate) durability class 2, messmate (Eucalyptus oblique) durability class 3 and slash pine (Pinus elliottii) durability class 4.
After one year the African mahogany samples are showing minimal decay, and it is not yet possible to determine if they are is consistent with durability class 3 or durability class 2 timbers above ground. In addition, no termite attack was observed; however, more time is required before reliable conclusions can be drawn.
Future results from the trial will provide valuable data about African mahogany durability, and potentially lead to the development of new processes and products that will grow the market for the timber.
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