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SWP technical reports by date

Please note: Some of these reports are restricted access.

  • 100 years of the Eucalyptus Tortoise Beetle in New Zealand
    SWP-T023 - Access: unrestricted.
    June 2017
    The Eucalyptus tortoise beetle, Paropsis charybdis, has been one of the most successful insect pests to invade New Zealand. One hundred years have now passed, and yet this pest continues to cause…

  • A Regional Approach to Matching Specialty Timber Species to Sites
    SWP-T019 - Access: unrestricted.
    February 2017
    A report to summarise the Specialty Wood Products Partnership workshop on site-species matching A workshop on the theme of matching specialty timber species to sites was held in Wellington in…

  • Eucalyptus nitens breeding plan
    SWP-T018 - Access: unrestricted.
    December 2016
    Eucalyptus nitens breeding has a long tradition in commercial forestry in New Zealand. It is nowadays the most important Eucalyptus species in the country, and as a fast-growing species of good form, it…

  • Calibrating NIR spectroscopy for extractive content of E. bosistoana stem cores
    SWP-T017 - Access: unrestricted.
    November 2016
    A meaningful selection/breeding programme requires the assessment of many (i.e. thousands) of individuals. The time and labour requirements of standard durability tests based on fungal decay prohibit their use in…

  • Identification of Issues and Opportunities for LVL from NZ Eucalypts
    SWP-T015 - Access: unrestricted.
    October 2016
    Information on the opportunities and possible issues for LVL made from eucalypts available or likely to be available in NZ is reviewed and summarised. While it is generally agreed that…

  • Eucalyptus nitens Optimised Engineered Lumber (OELTM) Trial
    SWP-T014 - Access: unrestricted.
    September 2016
    The OELTM (Optimised Engineered Lumber) technology produces structural products with known, uniform and reliable properties. There is financial advantage derived from the fact that all the merchantable OELTM production output is certified…

  • Screening Eucalyptus bosistoana for Heartwood
    SWP-T009 - Access: unrestricted.
    August 2016
    Some eucalypts produce timber of highest natural durability and rich colour. Only the heartwood of trees can have these properties. However, the amount and quality of heartwood in trees is…

  • Scion’s core funded experiments on thermal modification of Eucalyptus nitens
    SWP-T011 - Access: unrestricted.
    August 2016
    Laboratory scale trials were carried out on kiln dried E. nitens. This was sourced from Specialty Timber Solutions, and the trees originated from a farm forest in the North Canterbury…

  • Heartwood formation in young Eucalyptus bosistoana
    SWP-T012 - Access: unrestricted.
    August 2016
    Little is known about heartwood formation in young trees and published literature reports are based on heartwood of old trees. However, in the context of fast-growing short-rotation durable eucalyptus plantations,…

  • Scion’s core funded experiments on scCO2 wood extracts (proof of concept)
    SWP-T013 - Access: unrestricted.
    August 2016
    Initial experiments to carry out scCO2 (supercritical fluid) extractions were undertaken on two species of interest: Douglas fir and Eucalyptus nitens and four tissue types: leaves/needles, bark, sapwood and heartwood. The…

  • Review of eucalypt wood processing issues
    SWP-T016 - Access: unrestricted.
    August 2016
    The vast majority of eucalypt plantations worldwide (at least 20 million ha) have been established as fast-growing exotic biomass forests for pulpwood and energy in tropical and sub-tropical environments and…

  • Economic comparison of Traditional and Genomic breeding programmes for Eucalyptus nitens
    SWP-T010 - Access: unrestricted.
    August 2016
    This analysis was done to compare the value of the genomic and traditional breeding programmes. The analysis builds upon results already presented to the SWP programme steering group in March…

  • Douglas-Fir Optimised Engineered Lumber (OELTM) Trial
    SWP-T007 - Access: unrestricted.
    July 2016
    The OELTM (Optimised Engineered Lumber) technology produces structural products with known, uniform and reliable properties. There is financial advantage derived from the fact that all the merchantable OELTM production output is certified…

  • Improving Drying Quality of Eucalyptus Nitens Timber
    SWP-T008 - Access: unrestricted.
    July 2016
    Eucalyptus nitens has a very high incidence of drying degrade, primarily caused by water tension stress occurring early in drying. This degrade reduces the recovery of sawn timber from nitens…

  • Literature Review: Measuring Growth-strain by IR-spectroscopy
    SWP-T002 - Access: unrestricted.
    July 2016
    Growth-stresses cause problems in wood processing. Current measurement methods of growth stresses are labour-intensive and destructive. Research has shown that changes in stress levels, moisture content and temperature induce molecular deformations in wood,…

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