Four timber species previously considered to be resistant to lyctine beetle attack are susceptible to the pest, a study undertaken by Ensis on behalf of the Forest and Wood Products Research and Development Corporation has found.
Sapwood of 30 to 50-year-old narrow-leaved red ironbark, broad-leaved red ironbark, rose gun and Tasmanian-grown mountain ash was found to be susceptible to lyctine beetles, also known as powder post beetles.
Susceptible timbers require some form of preservative treatment, or modification, to enable greater sawn recovery and use of the hardwood resource...more