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<p>This study evaluated the effects of microbial inoculation on large-scale composting of mink manure with dried bedding grass. Eight bacterial strains isolated from natural chicken and cattle manure compost were used as microbial inoculating agents. Results demonstrated that microbial inoculation enhanced the composting process, evidenced by prolonged thermophilic phases (12 d in the inoculated pile compared to 7 d in the control), increased nitrate-N (NO<sub>3</sub><sup>−</sup>–N) content after day 10, and improved germination index (GI). The inoculated piles exhibited lower C/N and E<sub>4</sub>/E<sub>6</sub> ratios at the end of the composting period, indicating enhanced humification and compost maturity. Moreover, microbial inoculation accelerated the degradation of organic matter and improved nitrogen transformation, yielding organic fertilizer with low phytotoxicity as indicated by germination index. These findings suggest that functional microbial agents can effectively optimize the composting process for mink manure. Future studies should investigate the underlying mechanisms of microbial inoculation to further improve composting efficiency and maturity.</p> Graphical Abstract <p></p>

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Microbial Inoculation Promotes Degradation and Maturity in Large-Scale Composting of Mink Manure with Dried Bedding Grass

  • 期刊论文

  • 发表日期：

    2026年6月20日

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  • Gailin Gong,
  • Haotian Mao,
  • Yanlong Xu,
  • Cong Cong,
  • Bilal Murtaza,
  • Yongping Xu,
  • Xiaoyu Li,
  • Jianguang Li,
  • Zhizhong Quan,
  • Lili Wang

摘要

This study evaluated the effects of microbial inoculation on large-scale composting of mink manure with dried bedding grass. Eight bacterial strains isolated from natural chicken and cattle manure compost were used as microbial inoculating agents. Results demonstrated that microbial inoculation enhanced the composting process, evidenced by prolonged thermophilic phases (12 d in the inoculated pile compared to 7 d in the control), increased nitrate-N (NO3−–N) content after day 10, and improved germination index (GI). The inoculated piles exhibited lower C/N and E4/E6 ratios at the end of the composting period, indicating enhanced humification and compost maturity. Moreover, microbial inoculation accelerated the degradation of organic matter and improved nitrogen transformation, yielding organic fertilizer with low phytotoxicity as indicated by germination index. These findings suggest that functional microbial agents can effectively optimize the composting process for mink manure. Future studies should investigate the underlying mechanisms of microbial inoculation to further improve composting efficiency and maturity.

Graphical Abstract