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Interdisciplinary Approach to the Study and Management of Stem Defect in Eucalypts

Citation

Wardlaw, T and Mohammed, CL and Barry, KM and Eyles, A and Wiseman, D and Beadle, CL and Battaglia, M and Pinkard, EA and Kube, P, Interdisciplinary Approach to the Study and Management of Stem Defect in Eucalypts, New Zealand Journal of Forestry Science, 33, (3) pp. 385-398. ISSN 0048-0134 (2003) [Refereed Article]

Abstract

In Australia large areas of forest have been closed to industrial forestry and it is necessary to compensate for lost production. Future wood products will come from intensively managed silvicultural regimes -eucalypt regrowth forest and plantations. Solid-wood regimes involving high-cost operations such as pruning and thinning will be economically sensitive to downgrade due to various types of stem defect-fungal and insect damage, staining, kino veins. In Tasmania, research over the last decade has focused on developing management strategies to minimise stem defect caused by decay fungi in both regrowth and plantation eucalypts. Under plantation conditions neither Eucalyptus nitens (Deane & Maiden) Maiden nor E. globulus Labill. shed branches efficiently. Retention of dead branches leads to defects in wood such as large knotty core or loose knots, making the stem unsuitable for either veneer or sawlog. Pruning of green branches at canopy closure and in subsequent lifts shortly afterwards solves this problem. However, on the more productive warm and wet sites there is a high level of decay infections in E. nitens and E. globulus via pruning wounds. We are investigating the complex pathological, physiological, genetic, and silvicultural components dictating eucalypt susceptibility to decay infection and its long-term spread into clearwood including: crown characteristics prior to pruning; growth responses to pruning; growth responses to fertiliser; host resistance and antimicrobial defences; and the identity and pathogenicity of decay fungi. An interdisciplinary approach is fundamental to understanding such questions and also to the succesful development of site productivity models that include predictions of risk and impact of biotic and abiotic damage.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Forestry Sciences
Research Field:Forestry Pests, Health and Diseases
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Hardwood Plantations
Author:Mohammed, CL (Associate Professor Caroline Mohammed)
Author:Barry, KM (Dr Karen Barry)
Author:Eyles, A (Dr Alieta Eyles)
Author:Wiseman, D (Miss Danielle Wiseman)
Author:Beadle, CL (Dr Christopher Beadle)
Author:Battaglia, M (Dr Michael Battaglia)
Author:Pinkard, EA (Dr Elizabeth Pinkard)
ID Code:45078
Year Published:2003
Deposited By:Agricultural Science
Deposited On:2007-07-01
Last Modified:2011-11-23
Downloads:0

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