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The role of basic amino acids in the soil organic matter accumulation process

Research Project

Project/Area Number 15K07343
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plant nutrition/Soil science
Research InstitutionRyukoku University

Principal Investigator

Moriizumi Mihoko  龍谷大学, 農学部, 准教授 (10220039)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords土壌有機態窒素 / 塩基性アミノ酸 / 土壌有機物 / サイズ排除クロマトグラフィー / タンパク様物質 / アミノ酸組成 / 堆肥 / 牛ふん堆肥 / 重窒素
Outline of Final Research Achievements

In this study, contribution ratios of a cattle manure compost application to soil organic nitrogen accumulation was quantified in three-year field experiment at different 3 soils with 15N methodologies, and changes in amino acid composition and molecular weight distribution of sequential extracts of soils with compost were investigated to illuminate the role of basic amino acids in the soil organic matter accumulation process. Our results showed that nitrogen proportions among extracts of these soils became constant in a year. High-molecular weight organic matter of compost, which had high contents of basic amino acids similar to that of microbial remains, were deposited with Al-hydroxide or clay minerals at the first. On the other hand, low-molecular weight organic matter containing much acidic and neutral amino acids was labile. The proportion of basic amino acids of soil extracts is useful as a contribution index of microbial remains in soil organic matters.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (1 results)

All 2015

All Presentation (1 results)

  • [Presentation] 牛ふん堆肥はなぜ緩効性なのか? : 重窒素標識牛ふん堆肥施用土壌の有機態窒素の逐次抽出2015

    • Author(s)
      森泉美穂子・松永俊朗・田中福代
    • Organizer
      日本土壌肥料学会
    • Place of Presentation
      京都大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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