SWP technical reports by date
Please note: Some of these reports are restricted access.
- Scion’s core funded experiments on thermal modification of Eucalyptus nitens
SWP-T011 - Access: unrestricted.
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.
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.
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.
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.
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.
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.
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.
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,…
- Selection for solid wood properties in Eucalyptus nitens
SWP-T005 - Access: unrestricted.
Eucalyptus nitens can be recognised as one of the tree species in New Zealand with an advanced breeding programme that is moving towards its fourth generation. Eucalyptus nitens is one of the most…
- Initial evaluation of genomic selection to improve wood property in Eucalyptus nitens breeding population
SWP-T006 - Access: unrestricted.
The E. nitens genetic improvement programs are predominantly based on open-pollinated progeny tests. This approach produces high levels of hidden relatedness whose ignorance causes upward bias in genetic parameters. Development…
- Breeding plan for the development of Douglas-fir (Pseudotsuga menziesii var. menziesii) in New Zealand
SWP-T003 - Access: unrestricted.
Douglas-fir is renowned for its stiff wood and is one of the finest structural timbers in the world. Eighty per cent out of 105,000 hectares planted Douglas-fir in New Zealand…
- Alternative Species Site Mapping Review and Analysis
SWP-T004 - Access: unrestricted.
Background Commercial forestry in New Zealand is dominated by the site insensitive species Pinus radiata (radiata pine). The commercial planting of non-radiata pine (alternative) forestry species over the last century has…
- Results of assessments in FR375, Beaumont controlled-pollinated 1999 Douglas fir progeny trial
SWP-T001 - Access: unrestricted.
The 1999 controlled-pollinated Douglas-fir trial at Beaumont (FR375) was designed to compare selections from the first Douglas-fir breeding population. They had been selected as the best individuals in the best-adapted…