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2023 Fiscal Year Final Research Report

Analyses of significant substrates and microorganisms during startup stage of cow manure composting under low-temperature environment

Research Project

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Project/Area Number 21K05880
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41050:Environmental agriculture-related
Research InstitutionNational Agriculture and Food Research Organization

Principal Investigator

Hanajima Dai  国立研究開発法人農業・食品産業技術総合研究機構, 北海道農業研究センター, グループ長 (20414708)

Co-Investigator(Kenkyū-buntansha) 前田 武己  岩手大学, 農学部, 准教授 (40333760)
Project Period (FY) 2021-04-01 – 2024-03-31
Keywords堆肥 / 低温環境 / 微生物 / 温度 / 基質
Outline of Final Research Achievements

Generally, process of cow manure composting in winter season is hindered due to low ambient temperature. Immature compost that has not been exposed to heat poses high risks of survival of weed seeds and pathogenic microorganisms. With the aim of improving the composting process, we investigate microorganisms that play an important role in heat generation at startup stage of the composting process under low-temperature environment. The results indicated that metabolically active bacteria or fungi belonging to Firmicutes, Tenericutes, Actinobacteria, Mucoromycota or Ascomycota might contribute to heat generation of the composting process during startup stage.

Free Research Field

畜産環境保全学

Academic Significance and Societal Importance of the Research Achievements

乳牛の飼養には冷涼な環境が好まれるため、結果として乳牛ふんの堆肥化処理の多くは、北海道など冬期の寒さが厳しい地域において行われている。しかし極度の低温環境下では微生物活性が低下し、良質堆肥の生産は困難となる。これまで低温環境下における堆肥化処理、特に低温環境下で活躍する微生物の動態に関する研究はほとんど行われていない。本研究は堆肥品質が低下する冬期の堆肥化のスタートアップを改善し、堆肥品質の向上、および堆肥のリスクを低減させることを目的としている。

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Published: 2025-01-30  

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