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Wet storage for discolouration protection during roundwood storage of three Swedish hardwoods

Nasslagerung von Rundholz dreier schwedischer Laubholzarten zum Schutz vor Verfärbung

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Abstract

Discolouration progressing from the end surfaces is a wood quality problem that arises when storing hardwood logs during summer. Wet storage (water sprinkling) is used for protecting stored softwood logs, but experience of wet storing hardwoods is limited. To test the benefit of wet storing hardwoods, logs of Betula pendula/pubescens, Alnus incana/glutinosa, and Populus tremula were wet and dry-stored during 12 summer weeks in southern Sweden to compare the development of discolouration. The discolouration was measured visually during storage in split logs. Wet storage was found to significantly reduce discolouration in the stored logs of all species, with the reduction being most pronounced for birch.

Zusammenfassung

Von der Stirnseite ausgehende Verfärbungen sind ein Qualitätsproblem, das bei der Lagerung von Laubrundholz im Sommer auftritt. Die Nasslagerung (Beregnung mit Wasser) wird bei der Lagerung von Nadelrundholz bereits angewandt, jedoch gibt es noch kaum Erfahrungen mit der Nasslagerung von Laubholz. Um die Vorteile einer Nasslagerung von Laubholz zu untersuchen, wurden Stammabschnitte von Betula pendula/pubescens, Alnus incana/glutinosa und Populus tremula über einen Zeitraum von 12 Wochen im Sommer in Südschweden sowohl nass als auch trocken gelagert und auftretende Verfärbungen wurden verglichen. Die Verfärbung wurde visuell während der Lagerung an aufgetrenntem Rundholz bestimmt. Es wurde gezeigt, dass durch Nasslagerung die Verfärbung von Stammabschnitten bei allen Holzarten wesentlich reduziert werden konnte, am stärksten bei Birkenholz.

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Acknowledgments

The author would like to thank everyone at the Södra Interiör sawmill in Traryd, and especially Anders Eriksson and Berndt Johansson, for their valuable cooperation. The assistance of Hans Fryk and Cecilia Åstrand in both field and laboratory work is also greatly appreciated.

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  1. Department of Forest Products, Swedish University of Agricultural Sciences, P.O. Box 7008, 75007, Uppsala, Sweden

    Maria Jonsson

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  1. Maria Jonsson
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Correspondence to Maria Jonsson.

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Jonsson, M. Wet storage for discolouration protection during roundwood storage of three Swedish hardwoods. Eur. J. Wood Prod. 71, 219–225 (2013). https://doi.org/10.1007/s00107-013-0668-5

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  • DOI: https://doi.org/10.1007/s00107-013-0668-5

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