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Comparative study on the efficacy of biobased wood preservative over conventional wood preservatives against fungi and termites

XV World Forestry Congress, 2-6 May 2022









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    Isolation of DNA from preserved woods for identification of wood species through genetic analysis regardless of the age of wood production
    XV World Forestry Congress, 2-6 May 2022
    2022
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    Species identification of wood provides important information for archaeology, restoration of cultural assets, preventing illegal logging, and more. Wood species are usually identified based on their anatomical features with the use of a microscope. However, this method may not be able to distinguish between anatomically similar species or subspecies. To overcome this problem, wood species need to be identified at the molecular level using DNA sequencing. However, unlike living plant cells, wood is difficult to pulverize using a mortar, and DNA extraction from dried wood is challenging. To solve these problems, we propose a pretreatment method in which wood is pulverized using 60-grit sandpaper and hydrated with water for 2 days. Using this method, we were able to stably amplify the rpoB gene from the extracted DNA of Pinus rigida. In addition, sequence analysis of the rpoB gene revealed six single nucleotide polymorphisms (SNPs), which classified the rpoB sequences in the genus Pinus into five groups. Our data indicate that although these SNPs were not suitable for species identification, they can potentially be used to determine the origin of different wood subspecies or individual samples of wood. Keywords: Monitoring and data collection, Research ID: 3616978
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    The preservation of natural forests through the establishment of industrial wood production plantations via the new, fast growing Robinia pseudoacacia ‘Turbo Obelisk’ varieties and new cultivation technologies
    XV World Forestry Congress, 2-6 May 2022
    2022
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    After decades of research and development, Silvanus Forestry Ltd. and HungaroPlant Ltd. have successfully propagated the Robinia pseudoacacia ‘Turbo Obelisk’ variety group and developed the necessary cultivation technologies, specifically for intensive industrial wood production plantations. In comparison to the Hungarian and traditional black locust varieties and cultivation technology, industrial wood production plantations established with our variety group and using our cultivation technologies can produce twice as much timber yield and industrial timber yield, considering 15-year rotation periods. These parameters are comparable with the performance of the widespread Eucalyptus and Pinus plantations in the subtropics. Our varieties and cultivation technologies, however, are also usable in subtropical, temperate, as well as tropical climates. The outstanding yields achieved by the ‘Turbo Obelisk’ varieties and the extremely high industrial wood output can provide a significant contribution to the conservation and maintenance of natural ecosystems, whilst the CO2 sequestration per unit area per time is also several times that of natural forests. A particular advantage to emphasize is long term carbon sequestration due to the high percentage of industrial wood yield. Increasing the exceptional tolerance of black locust against drought, pollution and low-quality soils, our varieties are exceptionally suitable for the utilization of marginal agricultural areas, the agricultural utilization of which would otherwise create an economical loss. This can also significantly increase the advancement of less developed regions. In addition to plantation cultivation, it also provides a cost-effective solution for the establishment of protective forest belts, road-side plantings, quicksand fixation and soil renovation. Delicious honey production is also a possible revenue stream. The global exploitation of the research findings has begun, having already successfully established test plantations in China, India, and Pakistan, as well as in several European countries. Keywords: dry agricultural areas, micro-propagated black locust varieties, ‘Turbo Obelisk’, carbon sequestration ID: 3484660
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    Current situation of preserved wood market in Republic of Korea
    XV World Forestry Congress, 2-6 May 2022
    2022
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    In Republic of Korea, in order to establish a distribution order for wood products and to use them safely, 15 wood products prescribed by 'Act on The Sustainable Use of Timber' law are under quality control.
    Among them, preserved wood is a product produced to increase the durability and economic value of wood. Preserved wood treated with copper compound-based preservatives such as ACQ and CUAZ is mainly used. In Korea, it is mainly used for decking(50.9 %) and landscaping(24.1 %), and about 95% of the used preserved wood is H3 grade. The preserved wood market is showing a decreasing trend every year, and it decreased to about 50% in 2019 compared to 2016.
    In order to confirm the reason for the decreasing steadily of the market for preserved wood in terms of quality, we will analyze the current situation such as quality changes based on the test analysis results conducted by the Korea Forestry Promotion Institute for the past 5 years, and review the areas for improvement. Keywords: Monitoring and data collection, Research ID: 3623003

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