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DocumentA study on tree species and crops of agroforestry according to ecological geographic map in North Korea
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.This study was conducted to analyze the appropriate tree species and crops according to agroforestry target sites in North Korea based on ecological geography and site properties with the purpose of preparation of technical cooperation on agroforestry, one of the main agendas of the Inter-Korean Forest Cooperation Subcommittee. The agroforestry is one of the methods for forest restoration that satisfies both North Korea's fuel and food shortages and the restoration of deforested land and it began in 2003. To this end, the ecological geographic map (13 regions and 4 zones) of North Korea was made by using satellite images with North Korean journals. The target sites for agroforestry was classified according to 18 site conditions depending on 3 site characteristics (soil depth, relative location, slope), and divided as short-term and long-term target sites depend on agroforestry management period. And then, appropriate tree species and crops for agroforestry are selected according to them. By regions within the same zone, tree species and crops were mostly similar, but compared to each zone, they differed. This seems to be because the geographical climatic characteristics reflected in the ecological geographic map vary greatly from zone to zone. Through this, it is expected to provide information that can be more efficiently implemented through analysis of the target sites needed for application of agroforestry and needed for application of agroforestry management and the combination of suitable species and crops. Keywords: Deforestation and forest degradation, Research, Policies ID: 3623065 -
DocumentThe effect of modification of hydroxy group of alkanol and benzyl alcohol to hydroxyalkyloxy group on nematicidal activity against pine wood nematode
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Pine wood nematode (PWN), Bursaphelenchus xylophilus causes devastating damage to pines worldwide. Control and prevention of pine wood disease (PWD) in Korea is primarily trunk injection of abamectin and emamectin benzoate. Previously we found the nematicidal activity of 2-(1-undecyloxy)-1-ethanol (monochamol), which is reported to be aggregation pheromone of its vectors, Monochamus species, was as same to that of abamectin. Since then, we tried to develop new agent for controlling and preventing PWD using alkyloxyalkanols (ROR’OH) and benzyloxyalkanols (BzOROH). We synthesized ROR’OH and BzOROH by substituting hydroxy group (–OH) to hydroxyalkyloxy group (–OROH) and tested their nematicidal activity against PWN. As controls, monochamol and abamectin were also tested. The substitution –OH group to –OROH affected the nematicidal activity increasingly. The nematicidal activity was different according to total carbon chain length in compounds, although the compounds have same molecular formula. It may be due to the different position of oxy group in the compound of alkyloxyalkanol LC50 values of C10OC4OH, C6OC8OH, C10OC2OH and C12OC2OH were as same as that of monochamol. Substitution of hydroxy group of benzyl alcohol enhanced the nematicidal activity of new compound. Here, we will report the nematicidal activity changes by substitution –OH of alkanol and benzyl alcohol to –OROH. Keywords: Agriculture, Research ID: 3619465 -
DocumentIntroduction of research on matsutake-infected pine trees in Republic of Korea
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Tricholoma matsutake (pine mushroom) has been a very import mushroom harvested from Pinus densiflora forests for a long time in Korea. Research on matsutake infected-pine trees began at National Institute of Forest Science in 1980. The main objectives of the research were the production of matsutake-infected pine trees in pine mushroom forests and their transplantation in pine forests without pine mushrooms. Although the production of matsutake-infected pine trees was successful, continuous growth of matsutake mycelia from matsutake-infected pine trees and production of fruiting bodies were not achieved after transplantation. The same study started again in 2000 and we tried to find out what the senior researchers had overlooked and cause of failure in their studies. Our main goals of research were (1) the production of matsutake-infected pine trees that minimized the damage of existing fairy ring of T. matsutake, (2) transplantation and confirmation of mycelial growth without damage of existing living matsutake mycelia, and (3) monitoring of fruiting body and management of matsutake pine forest. 150 matsutake-infected pine trees were transplanted into the Hongcheon experiment site from 2001 to 2004. In 2010, the matsutake mushroom was first successfully fruited in a place where matsutake-infected pine trees were transplanted. From 2017 to 2020, fruit bodies of pine mushroom are fruited every year. 21 fruiting bodies occurred in the same site in 2020. It was genetically confirmed that the fruiting bodies in the production area of existing matsutake-infected pine trees were identical to matsutake fruiting bodies occurred in the transplanted area using the SSR markers. In conclusion, we established the matsutake cultivation method using matsutake-infected pine trees through tracing the growth of matsutake mycelium, mushroom production, and confirmed it via the analysis of fruiting bodies based on genetic markers. Keywords: Monitoring and data collection ID: 3622892
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