MOKUZAI HOZON (Wood Protection)
Online ISSN : 1884-0116
Print ISSN : 0287-9255
ISSN-L : 0287-9255
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Volume 28, Issue 4
Displaying 1-6 of 6 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    2002 Volume 28 Issue 4 Pages 131-134
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.131
    JOURNAL FREE ACCESS
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  • Feeding tests by Dinoderus minutus Fabricius on acetylated bamboo
    Shinji NINOMIYA, Kimito KOTANI
    2002 Volume 28 Issue 4 Pages 135-143
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.135
    JOURNAL FREE ACCESS
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    Splited pieces of Madake (Phyllostachys bambusoides Sieb. et Zucc.) felled at different season were acetylated and served for feeding tests with Dinoderus minutus Fabricius to investigate their anti-insect effectivenesses. The specimens felled at November, which contained less than 0.3% starch, were hardly attacted by the insects, showing the importance of starch content on the feeding activity of D . minutus. Acetylated specimens with different weight percent gains (WPGs) were produced by vapor or liquid phase acetylation with different reaction times and temperatures. A positive correlation between WPGs and anti-insect effectivenesses was obtained, and 10% or more of WPGs were practically enough to control the attack by D. minutus.
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  • Effects of pressure treatment with wood preservatives on pine on pine wood nema-tode (Bursaphelenchus xylophilus) mortality (II)
    Effects of pressure treatment with wood preservatives
    Koichi YAMAMOTO, Hideo ISHIDA
    2002 Volume 28 Issue 4 Pages 144-148
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.144
    JOURNAL FREE ACCESS
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    In order to prevent the spreading of pine wilt disease in forests of the world, wood packing of coniferous wood from Japan to China and EU countries is to be treated to kill pine wood nematodes. An experiment was carried out to elucidate the effects of vacuum and pressure treatment with wood preservatives on nematode mortality, following the previous study. Infested sawn timber (Pinus densiflora), naturally dried, was impregnated with an aqueous solution of 0.6% CuAz (copper-boron-azole) active ingredients or with 1.6% DDAC (didecyl dimethyl ammonium chloride) active ingredient or with tap water. Numbers of the pine wood nematodes (Bursaphelenchus xylophilus) in treated timber were measured at 1, 2, and 5 weeks after the impregnation of preservatives. Mortality of the nematodes reached 100% in 5 weeks after the treatment with DDAC. However the treatment with CuAz did not kill the nematodes completely. Different effects by DDAC and CuAz were probably due to penetration properties of these preservatives. Pressure impregnation of tap water did not show any effects on mortality of the nematodes. Full penetration of preservatives into the sapwood of timber is important to kill the pine wood nematodes completely.
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  • [title in Japanese]
    [in Japanese]
    2002 Volume 28 Issue 4 Pages 149-152
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.149
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2002 Volume 28 Issue 4 Pages 153-157
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.153
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2002 Volume 28 Issue 4 Pages 158-162
    Published: July 25, 2002
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.28.158
    JOURNAL FREE ACCESS
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