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Studies on the solubilizing mechanisms by crops for the unavailable soil nutrients and its application to the cropping systems

Research Project

Project/Area Number 16580045
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Plant nutrition/Soil science
Research InstitutionShimane University

Principal Investigator

MATSUMOTO Shingo  Shimane university, Life and environment science, Associate professor, 生物資源科学部, 助教授 (00346371)

Co-Investigator(Kenkyū-buntansha) OHNISHI Masao  Shimane university, Life and environment science, Associate professor, 生物資源科学部, 助教授 (80185339)
KADOWAKI Masayuki  Shimane university, Life and environment science, Assistant professor, 生物資源科学部, 助手 (00379695)
中野 尚夫  島根大学, 生物資源科学部, 教授 (20304256)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥2,400,000 (Direct Cost: ¥2,400,000)
KeywordsOrganic nitrogen / Citric acid / Oxalic Acid / Cropping system / companion plant / Brassica / 無機化 / 細胞壁 / ニンジン / コマツナ
Research Abstract

Within the Norg in soil, the available Norg is considered to be a fraction of easily mineralizable Norg. This Norg can be estimated based on the amount of released inorganic N when a soil is incubated under paddy and/or upland conditions at an appropriate temperature. However, incubation methods are time-consuming, and several methods of chemical extraction have thus been developed as substitutes for the incubation methods in many countries. The solubilization of organic nitrogen (Norg) in soil was examined by using organic acids often present in root exudates. The organic acids tested were classified into two groups depending on their solubilizing ability for Norg in a soil sample. Oxalate, malonate, tartarate, citrate and malate could dissolve Norg by increasing their concentrations, while succinate and glutarate could not dissolve Norg even when their concentrations were increased. The amount of organic N extracted with oxalate, malonate, tartarate, citrate and malate showed a strong correlation with the sum of the amounts of Al and Fe in the extracts. Therefore, it was assumed that the solubilizing ability may be attributed to the structure of these organic acids that can form stable chelate compounds with Al and Fe (oxalate, malonate, tartarate, citrate and malate). Furthermore, the amount of 20 mM citrate-extractable Norg (CEON), which was the highest among the organic acids tested, showed a strong correlation with both that of 67mM phosphate buffer, which is now being widely used as an index for estimating soil N availability in Japan, and N mineralized using an incubation method in 46 soil samples belonging to different soil types. These results suggested that CEON might be an important constituent of mineralizable Norg in soil. Therefore, organic acids secreted by crops play a role in the solubilization of available Norg surrounding the crop rhizosphere.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (18 results)

All 2006 2005

All Journal Article (17 results) Book (1 results)

  • [Journal Article] Effects of the application of heated sewage sludge on soil nutrient supply to plants.2006

    • Author(s)
      森塚直樹
    • Journal Title

      Soil Sci. Plant Nutr. 52

      Pages: 528-539

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An experimental approach to quantifying chemical and positional availability of soil potassium.2006

    • Author(s)
      森塚直樹
    • Journal Title

      Soil Sci. Plant Nutr 52

      Pages: 61-70

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 野菜類およびチャにおける導管液の分子量組成からみた土壌タンパク質様窒素吸収の可能性2006

    • Author(s)
      三浦伸之
    • Journal Title

      日本土壌肥料学雑誌 77

      Pages: 549-554

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] オガクズ牛ふんたい肥の長期施用がホウレンソウの生育および窒素吸収に及ぼす影響2006

    • Author(s)
      小田島ルミ子
    • Journal Title

      園芸学研究 5

      Pages: 389-395

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Effects of the application of heated sewage sludge on soil nutrient supply to plants.2006

    • Author(s)
      Noki, Moritsuka
    • Journal Title

      Soil Sci. Plant Nutr. 52

      Pages: 528-539

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An experimental approach to quantifying chemical and positional availability of soil potassium.2006

    • Author(s)
      Noki, Moritsuka
    • Journal Title

      Soil Sci. Plant Nutr. 52

      Pages: 61-70

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Possible uptake of protein-like organic nitrogen in a soil by some vegetables and tea plants.2006

    • Author(s)
      Nobuyuki, Miura
    • Journal Title

      Jpn. J. Soil Sci. Plant Nutr. 77

      Pages: 549-554

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of continuous application of compost made from cattle waste and sawdust on the growth and nitrogen uptake of spinach (Spinacia oleracea L.)2006

    • Author(s)
      Rumiko, Kodasima
    • Journal Title

      Hort. Res. (Japan) 5

      Pages: 389-395

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of the application of heated sewage sludge on soilnutrient supply to plants.2006

    • Author(s)
      森塚直樹
    • Journal Title

      Soil Sci. Plant Nutr. 52

      Pages: 528-539

    • Related Report
      2006 Annual Research Report
  • [Journal Article] An experimental approach to quantifying chemical and positional availability of soil potassium.2006

    • Author(s)
      森塚直樹
    • Journal Title

      Soil Sci. Plant Nutr. 52

      Pages: 61-70

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 土壌中に蓄積している窒素の形態分別法の検討2005

    • Author(s)
      小田島ルミ子
    • Journal Title

      日本土壌肥料学雑誌 76

      Pages: 833-842

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Extraction of soil organic nitrogen by organic acids and role in mineralization of nitrogen in soil2005

    • Author(s)
      松本真悟
    • Journal Title

      Soil Sci. Plant Nutr. 51

      Pages: 425-430

    • NAID

      110004704759

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sequential extraction methods for soil organic nitrogen.2005

    • Author(s)
      Rumiko, Kodasima
    • Journal Title

      Jpn. J. Soil Sci. Plant Nutr. 76

      Pages: 833-841

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Extraction of soil organic nitrogen by organic acids and role in mineralization of nitrogen in soil.2005

    • Author(s)
      Shingo, Matsumoto
    • Journal Title

      Soil Sci. Plant Nutr. 51

      Pages: 425-430

    • NAID

      110004704759

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Extraction of soil organic nitrogen by organic acids and role in mineralization of nitrogen in soil.2005

    • Author(s)
      Matsumoto, S., Ae, N., Matsumoto, T.
    • Journal Title

      Soil Science and Plant Nutrition 51・3

      Pages: 425-430

    • NAID

      110004704759

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 土壌中に蓄積している窒素の形態分別法の検討2005

    • Author(s)
      小田島ルミ子, 阿江教治, 吉光寺徳子, 松本真悟
    • Journal Title

      日本土壌肥料学雑誌 76・6

      Pages: 833-842

    • NAID

      110004734893

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 側条施肥栽培におけるペースト肥料の窒素組成の違いがホウレンソウの硝酸含量に及ぼす影響2005

    • Author(s)
      三代恭広, 太田勝巳, 松本真悟
    • Journal Title

      日本土壌肥料学雑誌 76・6

      Pages: 849-858

    • NAID

      110004734895

    • Related Report
      2005 Annual Research Report
  • [Book] 農業技術体系2005

    • Author(s)
      三代恭広, 太田勝巳, 松本真悟
    • Total Pages
      6
    • Publisher
      農文協
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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