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2002 Fiscal Year Final Research Report Summary

Fundamental Study on Effective Utilization of Forestry and Wood Industry Wastes

Research Project

Project/Area Number 13660167
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionKochi University

Principal Investigator

OHTANI Yoshito  Department of Forest Science, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (30253339)

Co-Investigator(Kenkyū-buntansha) SAMESHIMA Kazuhiko  Department of Forest Science, Faculty of Agriculture, Professor, 農学部, 教授 (50038254)
Project Period (FY) 2001 – 2002
KeywordsSugi / Hinoki / Bark / Extractives / Plant Growth Inhibition / Forestry Wastes / Wood Industry Wastes / Agricultural Use
Research Abstract

A large quantity of sugi and hinoki barks is generated every year, but their incineration has recently been prohibited by legislation. Therefore forest and lumber industries are in difficulty to dispose them and are searching new utilization. One of their promising usage is for the agricultural ones, e.g. compost, pot medium, mulch etc. but some extractives contained in these barks have been known to impede the growth of plants.
We have elucidated the quantities of water extractives or methanol extractives from the barks were largely different from sample to sample and were closely related to the plant growth inhibition. Cucumber and egg plant seeds were used for these experiments. They were germinated and grown on wet absorbent cotton containing each extractive in the Petri dish. The growth rate was apparently decreased according to increase of the extractives, especially the inner bark was markedly abundant in the extractives and influenced more than the outer bark. There was little difference between sugi and hinoki bark extractives. Higher molar phenolic substances seem to be main cause, therefore these problems assuem to be alleviated if the solubility of such phenols is lowered. Addition of gelatin or cationic polymers was found to dramatically reduce the plant growth inhibition and many kinds of water-soluble polymers were also effective to solve these problem.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 森本真弓, 大谷慶人, 鮫島一彦: "スギ、ヒノキの内樹皮、外樹皮におけるタンニンの定量"日本木材学会中国・四国支部2001年度研究発表会要旨集. 48-49 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 紀伊真奈美, 森本真弓, 大谷慶人, 鮫島一彦: "スギ、ヒノキの樹皮成分の植物に対する成長阻害作用"第52回日本木材学会大会研究発表要旨集. 374 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Ohtani, M.Morimoto, K.Sameshima: "Control of Inhibitory Effects of Sugi, Hinoki Barks on Plant Growth"The 14th Symposium of the Materials Research Society of Japan. 187 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Morimoto, Y. Ohtani and K. Sameshima: "Quantification of Tannin of Inner and Outer Barks from Sugi and Hinoki"Proceedings of Annual Conference of Chugoku-Shikoku Branch of Wood Research Society. 1. 48-49 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Kii, M. Morimoto, Y. Ohtani and K. Sameshima: "Inhibitory Effects of Bark Extractives of Sugi and Hinoki on Plant Growth"Abstracts of Annual Conference of Wood Research Society. 374 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ohtani, M. Morimoto and K. Sameshima: "Control of Inhibitory Effects of Sugi, Hinoki Barks on Plant Growth"Abstracts of The 14th Symposium of the Materials Research Society of Japan. 187 (2002)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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