• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Effect of the combinations of reduced tillage, biocide application and fertilization on crop, soil and agroecosystem.

Research Project

Project/Area Number 13660014
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 作物学
Research InstitutionThe University of Tokyo

Principal Investigator

NAKAMOTO Tomomi  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (50180419)

Co-Investigator(Kenkyū-buntansha) OYAIZU Hiroshi  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Professor, 大学院・農学生命科学研究科, 教授 (70177301)
YAMAGISHI Jyunko  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (60191219)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2003: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2001: ¥2,300,000 (Direct Cost: ¥2,300,000)
KeywordsReduced tillage / Crop productivity / Weeds / Soil organisms / Agroecosystem / Sustainability / 環境保全型技術 / 土壌生物相 / 省耕起 / 土壌小型節足動物 / 土壌保全 / 耕起
Research Abstract

1.To evaluate the feasibility of conservation tillage in combination with reduced biocide and fertilization regimes, field experiments were conducted using conventional (CT) and reduced tillage (RT), with or without reduced biocide and fertilization regimes.
2.Root biomass and sugar yield of sugar beet did not differ with any combinations of conservation practices. Early crop growth of soybean and spring wheat was increased under RT, which indicated a better nutrient utilization. However, reduced fertilization could not supply as much nitrogen as conventional chemical fertilization especially in the combination with RT. Larger amount of long-term application of organic fertilization may be necessary under RT compared to the requirement under CT to compensate for lower race of nitrogen release from organic matter. The species richness and diversity index of weeds were higher under manure application. When combined with manure application, RI may offer the potential for increasing diversity by reducing the competitiveness of dominant species and facilitating establishment of new or minor species.
3.Switching of tillage methods, from RT to CT or vice versa, reduced weed biomass in winter cropping. Although many annual and perennial weed species in summer cropping tended to increase under RT, the most dominant species, Amaranthus retroflexus, responded to tillage inconsistently. Species diversity of winter weeds and that of summer weeds was higher under RT than under CT. The microbial biomass and the population densities of nematodes and mites were higher under RT. The alternation of CT with RI was discussed.
4.Spatial dependence appeared more frequently under CT than under RT. The origin of tillage-induced spatial dependence and its possible role in precision farming were discussed.
5.A substrate-induced respiration (SIR) method combined with selective inhibition for estimating the fungal and bacterial biomass of Andosols was developed.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Miyazawa, K.et al.: "The effects of cropping systems and fallow managements on microarthropod populations."Plant Production Science. 5(3). 257-265 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yamagishi, J.et al.: "Stability of spatial variability of wheat and maize biomass in a small fiel under two contrasting tillage systems over three years."Field Crops Research. 81(2-3). 95-108 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Nakamoto, T., Yamagishi, J.: "Tillage effects on along-row variability of wheat and maize biomass."Plant Production Science. 6(4). 295-301 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Nakamoto, T., Wakahara S.: "Development of substrate induced respiration (SIR) method combined with selective inhibition for estimating fungal and bacterial biomass in Humic Andosols."Plant Production Science. 7(1). 70-76 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Miyazawa, K.et al.: "Response of weed flora to combinations of reduced tillage, biocide application and fertilization practices in a 3-year crop rotation."Weed Biology and Management. 4(1). 24-34 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Miyazawa, K.et al.: "Response of soybean, sugar beet and spring wheat to combination of reduced tillage and fertilization practices."Plant Production Science. 7(1). 77-87 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Miyazawa K. et al.: "The effects of cropping systems and fallow managements on microarthropod populations."Plant Production Science. 5(3). 257-265 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Yamagishi J. et al.: "Stability of spatial variability of wheat and maize biomass in a small field managed under two contrasting tillage systems over three years."Field Crops Research. 81(2-3). 95-108 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Nakamoto T, Yamagishi J.: "Tillage effects on along-row variability of wheat and maize biomass."Plant Production Science. 6(4). 295-301 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Nakamoto T., Wakahara S.: "Development of substrate induced respiration (SIR) method combined with selective inhibition for estimating fungal and bacterial biomass in Humic Andosols."Plant Production Science. 7(1). 70-76 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Miyazawa.K.et al.: "Response of soybean, sugar beet and spring wheat to the combination of reduced tillage and fertilization practices."Plant Production Science. 7(1). 77-87 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Miyazawa K. et al.: "Response of weed flora to combinations of reduced tillage, biocide application and fertilization practices in a 3-year crop rotation."Weed Biology and Management. 4(1). 24-34 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Nakamoto, T.: "Development of substrate induced respiration (SIR) method combined with selective inhibition for estimating fungal and bacterial biomass in Humic Andosols."Plant Production Science. 7(1). 70-76 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Miyazawa, K.: "Response of weed flora to combinations of reduced tillage, biocide application and fertilization practices in a 3-year crop rotation."Weed Biology and Management. 4(1). 24-34 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 三浦 史: "耕起法の違いが土壌の異なる深さにおける生物性に及ぼす影響"日本作物学会紀事. 72(別1)(発表予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yamagishi, J.: "Stability of spatial variability of wheat and maize biomass in a small field managed under two contrasting tillage systems over three years"Field Crops Research. 81(2-3). 95-108 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 宮沢佳恵: "保全型栽培技術の組合せによる雑草相の変化"日本作物学会紀事. 71(別2). 54-55 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 塚本真理子: "リビングマルチ栽培が土壌生物相に及ぼす影響"日本作物学会紀事. 72(別1)(発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 三浦 史: "耕起法の違いが土壌の生物性に及ぼす影響"日本作物学会紀事. 72(別1)(発表予定). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Nakamoto, T.: "The spatial variability patterns of wheat growth and soil properties in a small field as affected by tillage intensity"Plant Production Science. 5(2)(印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 宮沢佳恵: "省耕起・堆肥施用がテンサイの生育及び品質に与える影響"日本作物学会紀事. 5(別2)(印刷中). (2002)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi