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Time dependence of starch levels in the sapwood of Eucalyptus diversicolor (Karri) as: standing trees, stored saw-Logs, ringbarked trees and trees felled without lopping

Simpson, L.A. and Barton, A.F.M. (1991) Time dependence of starch levels in the sapwood of Eucalyptus diversicolor (Karri) as: standing trees, stored saw-Logs, ringbarked trees and trees felled without lopping. Holzforschung, 45 (4). pp. 253-257.

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Link to Published Version: https://doi.org/10.1515/hfsg.1991.45.4.253
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Abstract

The spread of Lyctus brunneus (powder post borer) throughout South Western Australia has lead to a need for Information on Starch levels in the sapwood of Eucalyptus diversicolor (Karri). Karri is one of the most commonly used structural timbers in Western Australia. Rates of starch depletion in stored Karri logs were determined, those in dry stored logs were found to be greater than those stored under an intermittent water spray regime. Starch levels in living, Standing Kam were measured and found to be strongly influenced by rainfall. Starch levels in ringbarked (girdled) trees declined more rapidly than those felled and left with an intact crown. A standard colorimetric technique for starch analysis was used. While high relative precision is possible, assumptions in this and similar methods make them unsuitable for absolute estimations of the two components of starch, amylose and amylopectin. Possible alternative methods are discussed.

Publication Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Publisher: Walter de Gruyter
Copyright: © 1991 Walter de Gruyter
URI: http://researchrepository.murdoch.edu.au/id/eprint/37168
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