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Aims <p>The aim of this study was to develop efficient and environmentally friendly fertilizer alternatives to mitigate the environmental problems and soil degradation caused by the overuse of chemical fertilizers, thus contributing to sustainable agriculture.</p> Methods <p>A bio-organic fertilizer derived from solid-state fermentation using the endophytic fungus <i>Chaetomium globosum</i> DX-THS3 was applied to <i>Capsicum annuum</i> cultivation. Growth performance, soil nutrient dynamics, enzymatic activity, and functional gene abundance of soil microbes were analyzed. The experiment included five treatments: unfertilized controls (CK), straw-wheat bran mix (SW), <i>C. globosum</i> bio-organic fertilizers (BF), sterilized BF (SBF), chemical fertilizer (CF).</p> Results <p>Results showed that BF significantly enhanced <i>C. annuum</i> yield, increasing fruit count and mass by 60.71% and 82.49%, compared to CK. BF improved soil nutrient availability, elevating organic matter, total nitrogen, total phosphorus, available phosphorus and potassium more effectively than CF. Notably, BF increased total nitrogen by 73.51% and 77.5% at 30 and 120&#xa0;days, surpassing CF’s effects. Soil enzymatic activity ranked in the order BF &gt; SBF &gt; SW &gt; CF &gt; CK, with BF showing the strongest enhancement. Additionally, BF enriched functional gene abundance in soil bacteria and fungi.</p> Conclusions <p>These findings demonstrate that BF optimizes soil physicochemical properties, nutrient cycling, and microbial activity, offering a sustainable strategy for straw resource utilization and soil health improvement to boost crop productivity.</p>

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Bio-organic fertilizer from wheat straw fermentation with Chaetomium globosum DX-THS3 enhances Capsicum annuum growth and soil microbial activity

  • 期刊论文

  • 发表日期：

    2025年10月31日

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  • Jiasi Tan,
  • Hongjuan Liao,
  • Du Zhu,
  • Zhibin Zhang,
  • Weiying Wang,
  • Yumei Jiang

摘要

Aims

The aim of this study was to develop efficient and environmentally friendly fertilizer alternatives to mitigate the environmental problems and soil degradation caused by the overuse of chemical fertilizers, thus contributing to sustainable agriculture.

Methods

A bio-organic fertilizer derived from solid-state fermentation using the endophytic fungus Chaetomium globosum DX-THS3 was applied to Capsicum annuum cultivation. Growth performance, soil nutrient dynamics, enzymatic activity, and functional gene abundance of soil microbes were analyzed. The experiment included five treatments: unfertilized controls (CK), straw-wheat bran mix (SW), C. globosum bio-organic fertilizers (BF), sterilized BF (SBF), chemical fertilizer (CF).

Results

Results showed that BF significantly enhanced C. annuum yield, increasing fruit count and mass by 60.71% and 82.49%, compared to CK. BF improved soil nutrient availability, elevating organic matter, total nitrogen, total phosphorus, available phosphorus and potassium more effectively than CF. Notably, BF increased total nitrogen by 73.51% and 77.5% at 30 and 120 days, surpassing CF’s effects. Soil enzymatic activity ranked in the order BF > SBF > SW > CF > CK, with BF showing the strongest enhancement. Additionally, BF enriched functional gene abundance in soil bacteria and fungi.

Conclusions

These findings demonstrate that BF optimizes soil physicochemical properties, nutrient cycling, and microbial activity, offering a sustainable strategy for straw resource utilization and soil health improvement to boost crop productivity.