SWP technical reports by date
Please note: Some of these reports are restricted access.
- The decay resistance of alternative species in an accelerated framing test Assessment of decay after one year’s exposure
SWP-T160 - Access: unrestricted.
Sets of framing samples were exposed in high humidity conditions of 85-90% relative humidity and 25 – 27°C. The species and preservative treatments included in this test were: Eucalyptus fastigata, mixed heartwood\sapwood,…
- Evaluation of Douglas-fir progeny test FR508/1 and FR508/2
SWP-T161 - Access: unrestricted.
Scion’s Douglas-fir breeding program is continuing in genetic improvement of traits related to productivity and stem form by establishment of new generation of progeny trial. The latest generation of progeny…
- Evaluation of genetic gain trials in Douglas-fir
SWP-T162 - Access: unrestricted.
The field experiments for the evaluation of realised genetic gain were established in 2012 and 2013 across New Zealand and measured for productivity and stem-form attributes in 2022. We have…
- Machinability of 28-year-old Eucalyptus globoidea wood
SWP-T155 - Access: unrestricted.
This report relates to SWP work plan 131 ‘Wood products from NZDFI species’, milestone 5 ‘Machinability of Eucalyptus globoidea; outdoor demonstration product’. The overall objective was to assess the technical feasibility of…
- Assessment of NZDFI’s 2016 Eucalyptus quadrangulata breeding population at NZRC Paparoa
SWP-T156 - Access: unrestricted.
This report concerns the phenotyping of NZDFI’s E. quadrangulata 2016 breeding population at NZRC Paparoa for heartwood and predicted extractive content. Heartwood diameter was not genetically correlated to tree DBH but negatively to…
- Assessment of Eucalyptus globoidea heartwood at Avery
SWP-T157 - Access: unrestricted.
The second (Avery) of three E. globoidea breeding trials has been phenotyped for heartwood properties. The results are comparable to the assessment of the previous E. globoidea trial at Atkinson. The data has been…
- National forest owner survey and resource inventory of alternative species
SWP-T159 - Access: unrestricted.
Stage 3: Mapping alternative species in East Coast This study used a remote sensing approach to classify alternative species of small-scale plantations in the East Coast wood supply region (i.e.…
- Densification of Eucalyptus nitens and E. fastigata – stability
SWP-T148 - Access: unrestricted.
The problem The objective of this study was to increase the surface density and surface hardness of Eucalyptus nitens and E. fastigata through wood densification. Wood densification is a process of heating wood and…
- Assessing paropsine damage on Eucalyptus trees with remote sensing
SWP-T153 - Access: unrestricted.
New Zealand forests comprise 10.1 million hectares of forests. Due to the sheer scale of managing these forests, remote sensing is increasingly used as a source of information for decision-making.…
- Genetic variation in collapse and other wood properties of Eucalyptus quadrangulata at mid-rotation age
SWP-T152 - Access: unrestricted.
This report is a draft chapter of Vikash Ghildiyal’s PhD thesis exploring genetic and technological solutions to reduce collapse in eucalyptus timbers. In this chapter 2 NZDFI E. quadrangulata breeding trials have been…
- Forest Protection SSIF research on species other than radiata pine 2021/22
SWP-T151 - Access: unrestricted.
Plantation species other than Pinus radiata (radiata pine), such as Douglas-fir, cypresses and eucalypts, continue to be of pivotal importance to ensuring New Zealand has a diversified forest estate resilient against biosecurity…
- Decay rate of Cypress stakes after one year’s exposure at the Whakarewarewa test site
SWP-T147 - Access: unrestricted.
Stakes of Cupressus x ovensii grown in Rotoehu and Riverhead, and Cupressus x leylandii (Leyland cypress) were installed in the Whakarewarewa outdoor test area in April 2021. Untreated radiata pine and CCA H4 treated…
- Eucalyptus resistance to paropsine beetles
SWP-T140 - Access: unrestricted.
A wide range of insect herbivores infest Eucalyptus trees in New Zealand, particularly insects native to Australia. The most damaging defoliators are the paropsine beetles. Paropsis charybdis and Paropsisterna cloelia (EVB). In 2019, EVB was present…
- Using NIR to Predict Sawn Timber Quality in E. nitens
SWP-T145 - Access: unrestricted.
An existing NIR model, developed as a screening tool for tree breeding, has been assessed as a possible method for identifying Eucalyptus nitens trees that produce timber that is not susceptible to…
- Using NIR to Predict Wood Shrinkage and Cellulose Content in Eucalyptus Nitens
SWP-T146 - Access: unrestricted.
The key outcome from this research is the ability to use predictions from NIR models for wood shrinkage and lignin/cellulose content as a substitute for expensive destructive phenotyping methods. The…