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Borate protection of hoop pine (Araucaria cunninghamii) sapwood from attack by subterranean termites (Coptotermes spp., Isoptera: Rhinotermitidae)

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Peters, B. C. and Allen, P.J. (1993) Borate protection of hoop pine (Araucaria cunninghamii) sapwood from attack by subterranean termites (Coptotermes spp., Isoptera: Rhinotermitidae). Australian Forestry, 56 (3). pp. 249-256. ISSN 0004-9158

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Article Link: https://doi.org/10.1080/00049158.1993.10674612


Field bioassays were conducted with two Australian Coptotermes species to determine protection of hoop pine sapwood afforded by borate compounds. Coptotermes lacteus (Froggatt) was examined in winter and Coptotermes acinaciformis (Froggatt) in winter, spring and late summer at two localities in the state of Queensland. Sapwood blocks were placed in plastic containers and attached to termite mounds or infested trees. Termite response was determined by mass loss over five weeks and modelled. C. lacteus was relatively benign in winter and for 1.0 and 2.5% mass loss, mean borate retentions of 0.20 and 0.06% m/m boric acid equivalent (BAE), respectively, were derived. With C. acinaciformis, for 1.0 and 5.0% mass loss, mean borate retentions ranged from 0.49 and 0.25% BAE. respectively, in winter, to 0.76 and 0.47% BAE. respectively, in late summer. These results support conclusions from earlier laboratory studies conducted elsewhere. Total prevention of damage by field populations of termites was not achieved. Marked intercolony variation in response to borate compounds was demonstrated, highlighting the usefulness of this rapid technique. The need for long term field exposure trials, which will facilitate technology transfer to industry, is indicated.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Horticulture and Forestry Science
Subjects:Science > Entomology
Plant pests and diseases
Forestry > Research. Experimentation
Forestry > Conservation and protection
Agriculture > By region or country > Australia
Live Archive:21 Mar 2024 05:58
Last Modified:21 Mar 2024 05:58

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