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2006 Fiscal Year Final Research Report Summary

Development of the variable rate management in proportion to the specific variation of soil and crop growth properties and yield on village farm

Research Project

Project/Area Number 16380016
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Crop science/Weed science
Research InstitutionKyoto University

Principal Investigator

INAMURA Tatsuya  Kyoto University, Graduate School of Agriculture, Associate Professor, 農学研究科, 助教授 (00263129)

Co-Investigator(Kenkyū-buntansha) UMEDA Mikio  Kyoto Univ., Grad.Sch.of Agr., Professor, 農学研究科, 教授 (60201357)
IIDA Michihisa  Kyoto Univ., Grad.Sch.of Agr., Associate Professor, 農学研究科, 助教授 (50232129)
SUGURI Masahiko  Kyoto Univ., Grad.Sch.of Agr., Assistant Professor, 農学研究科, 助手 (10226483)
INOUE Hiromo  Kyoto Univ., Grad.Sch.of Agr., Assistant Professor, 農学研究科, 助手 (40260616)
DOI Masahiko  Nara Agr. Experimental Station, General Researcher, 水田チーム, 総括研究員 (40443577)
Project Period (FY) 2004 – 2006
KeywordsPaddy-upland rotation / Precision agriculture / Variable rate fertilization
Research Abstract

An on-farm experiment was carried out at the paddy fields located in Ohnishi, Sakurai, Nara Japan In Ohnishi, the unit area of the paddy fields that are cooperatively managed by farmers is about 38 ha, and about 380 paddy fields. The cropping system of these fields has been three cropping in two years.
1.The multivariate analysis clearly demonstrated the high contribution of the agronomic factors (soil fertility factor, early growth factor, N dressing and uptake factor) as yield-limiting component factors. The agronomic factors (soil fertility factor, early growth factor, N dressing and uptake factor) could control about 77.1% of the spatially structured variation of the brown rice yield.
2.The uniformity of the cropping system, the cultivation method and the land utilization among fields influenced spatial dependences. Maps of Npf, which were generated by interpolation among estimated values by block kriging, will be made available to the farmer to apply top-dressing at optimal rates depending on the plant condition.
3.The proper management of variable rate seeding in proportion to the soil moisture percentage on dried soil basis at seeding in the wheat field may be able to control the number of panicles in the field to bring the adequate average wheat yield. This variable rate management may control 42.7% of the controllable proportion to total variation of wheat yield in the field.

  • Research Products

    (14 results)

All 2007 2006 2005 2004

All Journal Article (12 results) Book (2 results)

  • [Journal Article] コムギ収量の圃場内変動をもたらす要因の解析と可変量管理の可能性2007

    • Author(s)
      稲村達也
    • Journal Title

      日本作物学会紀事 76(2)

      Pages: 189-197

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Geostatistical analysis of spatial variability of paddy rice nitrogen in paddy-upland rotational fields for extension of precision agriculture2007

    • Author(s)
      Ikenaga, S.
    • Journal Title

      農業機械学会誌 69(2)

      Pages: 69-78

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Analysis of the Sources of Variations of Wheat Yield in the Field, and Possibility of the Variable Rate Management2007

    • Author(s)
      Inamura, T.
    • Journal Title

      Japanese Journal of Crop Science 76(2)

      Pages: 189-197

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Geostatistical analysis of spatial variability of paddy rice nitrogen in paddy-upland rotational fields for extension of precision agriculture2007

    • Author(s)
      Ikenaga, S.
    • Journal Title

      Journal of JSAM 69 (2)

      Pages: 69-78

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 田畑輪換田における水稲(Oriza sativa L.)収量変動の要因解明2006

    • Author(s)
      池永幸子
    • Journal Title

      日本作物学会紀事 76

      Pages: 28-36

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Analysis of the Variations of Rice Yield in Paddy-upland Rotational Fields2006

    • Author(s)
      Ikenaga, S.
    • Journal Title

      Japanese Journal of Crop Science 76

      Pages: 28-36

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 田畑輪換における土壌の窒素発現と水稲による窒素吸収の圃場間と年次間の変異-奈良盆地における4年間の比較-2005

    • Author(s)
      池永幸子
    • Journal Title

      日本作物学会紀事 74(3)

      Pages: 291-297

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Yearly and field variations of paddy-upland rotation fields in nitrogen mineralization and nitrogen absorption by rice in paddy-upland rotational fields2005

    • Author(s)
      Ikenaga, S.
    • Journal Title

      Japanese Journal of Crop Science 74(3)

      Pages: 291-297

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Geostatistical analysis of yield, soil properties and crop management practices in paddy rice fields2004

    • Author(s)
      Inamura, T.
    • Journal Title

      Plant Prod. Sci 7(2)

      Pages: 230-239

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] コンバイン用インパクト式穀粒流量センサ2004

    • Author(s)
      飯田訓久
    • Journal Title

      農業機械学会誌 66(6)

      Pages: 145-151

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Geostatistical analysis of yield, soil properties and crop management practices in paddy rice fields2004

    • Author(s)
      Inamura, T.
    • Journal Title

      Plant Prod.Sci. 7(2)

      Pages: 230-239

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Impact type grain flow rate sensor for combine.2004

    • Author(s)
      Iida, M.
    • Journal Title

      Journal of JSAM 66 (6)

      Pages: 145-151

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] 栽培システム学2005

    • Author(s)
      稲村達也
    • Total Pages
      195
    • Publisher
      朝倉書店
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Plant production systems2005

    • Author(s)
      Inamura, T
    • Total Pages
      195
    • Publisher
      Asakura
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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