1. Termite resistance of DMDHEU-treated wood
- Author
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Holger Militz, S. Schaffert, Christopher J. Fitzgerald, and Brenton C. Peters
- Subjects
040101 forestry ,0106 biological sciences ,Life Sciences ,Ceramics, Glass, Composites, Natural Methods ,Operating Procedures, Materials Treatment ,Wood Science & Technology ,biology ,Resistance (ecology) ,Scots pine ,Coptotermes acinaciformis ,Forestry ,04 agricultural and veterinary sciences ,Plant Science ,biology.organism_classification ,Pulp and paper industry ,01 natural sciences ,Industrial and Manufacturing Engineering ,Horticulture ,Materials Science(all) ,Mastotermes darwiniensis ,010608 biotechnology ,0401 agriculture, forestry, and fisheries ,General Materials Science ,Slash Pine ,Beech - Abstract
Four field trials were conducted with wood modified with dimethyloldihydroxy-ethyleneurea (DMDHEU) in contact with subterranean termites. Trials 1 to 3 were conducted with Coptotermes acinaciformis (Froggatt); 1 and 2 in south-east Queensland, and 3 in northern Queensland, Australia. Trial 4 was conducted in northern Queensland with Mastotermes darwiniensis (Froggatt). Four timber species (Scots pine, beech, Slash pine and Spotted gum) and two levels (1.3 M and 2.3 M) of DMDHEU were used. The tests were validated. DMDHEU successfully prevented damage by C.acinaciformis in south-east Queensland, but not in northern Queensland. It also did not protect the wood against M.darwiniensis. Except for beech in trial 4, DMDHEU led to reduced mass losses caused by termite attack compared to the unmodified feeder stakes. Slash pine (in trials 1 and 3) and Spotted gum (in trial 1) presented low mass losses. Modification of Scots pine was more effective against termite damage than the modification of beech. peerReviewed
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