Natural durability of tamarack (Larix laricina (Du Roi) K. Koch)

IRG/WP 98-10277

U Srinivasan, A Taylor, P A Cooper

Eastern larch or tamarack (Larix laricina (Du Roi) K. Koch) lumber from New Brunswick, Canada was evaluated for heartwood natural durability according to ASTM D2017-81. The natural durability of tamarack heartwood exposed to two brown rot fungi, Gloeophyllum trabeum and Postia placenta was low and generally inferior to that of the heartwood of spruce (Picea sp.) and white pine (Pinus strobus L.) and similar to that of red pine (Pinus resinosa Ait.) sapwood and heartwood. The decay resistance of tamarack was variable and not related to extractive content.


Keywords: LARIX LARICINA; NATURAL DURABILITY; GLOEOPHYLLUM TRABEUM; POSTIA PLACENTA; EXTRACTIVES

Conference: 98-06-14/19 Maastricht, The Low Countries


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