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Purpose <p>Rational use of organic fertilizers can reduce the negative effects of intensive fertilization while supporting crop growth. However, the mechanisms by which different organic fertilizer strategies affect microbial community dynamics, especially across various fertilizer types, remain unclear.</p> Methods <p>Here, we examined the variations in soil bacterial and fungal community structures across five fertilization regimes for sweet potato. These regimes are as follows: (1) CK, inorganic fertilizer; (2) T1, bio-organic fertilizer; (3) T2, animal-based organic fertilizer; (4) T3, inorganic + animal-based organic fertilizers; and (5) T4, inorganic + animal-based + bio-organic fertilizers.</p> Results <p>The results indicated that fertilization regimes significantly influenced soil physicochemical properties, with fungi being more sensitive to fertilization than bacteria. Specifically, the T2 treatment demonstrated a significantly lower Shannon index and a higher Simpson index compared to the other treatments, while no significant variation was observed in bacterial populations. Additionally, fungal community composition varied significantly across the fertilization treatments, with a clear distinction between the T1 treatment and CK, whereas bacterial communities exhibited minimal structural changes. Redundancy analysis revealed that soil available phosphorus and sucrase activity were key factors shaping fungal community structure, while soil phosphatase activity was identified as the driving factor for bacterial communities. Further analysis indicated that the T1 treatment resulted in higher network complexity, as evidenced by an increased number of nodes and edges.</p> Conclusions <p>In conclusion, fungi are more responsive to short-term organic fertilizer applications than bacteria, with single bio-organic fertilizer applications enhancing microbial network stability.</p>

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Effects of Different Short-term Organic Fertilizer Management on Bacterial and Fungal Communities in a Sweet Potato Soil

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Jie Zhu,
  • Haixia Wen,
  • Xiuli Su,
  • Shunlin Tan,
  • Zhiguo Fang,
  • Ruiqi Li,
  • Wenjian Wang,
  • Jie Zhang

摘要

Purpose

Rational use of organic fertilizers can reduce the negative effects of intensive fertilization while supporting crop growth. However, the mechanisms by which different organic fertilizer strategies affect microbial community dynamics, especially across various fertilizer types, remain unclear.

Methods

Here, we examined the variations in soil bacterial and fungal community structures across five fertilization regimes for sweet potato. These regimes are as follows: (1) CK, inorganic fertilizer; (2) T1, bio-organic fertilizer; (3) T2, animal-based organic fertilizer; (4) T3, inorganic + animal-based organic fertilizers; and (5) T4, inorganic + animal-based + bio-organic fertilizers.

Results

The results indicated that fertilization regimes significantly influenced soil physicochemical properties, with fungi being more sensitive to fertilization than bacteria. Specifically, the T2 treatment demonstrated a significantly lower Shannon index and a higher Simpson index compared to the other treatments, while no significant variation was observed in bacterial populations. Additionally, fungal community composition varied significantly across the fertilization treatments, with a clear distinction between the T1 treatment and CK, whereas bacterial communities exhibited minimal structural changes. Redundancy analysis revealed that soil available phosphorus and sucrase activity were key factors shaping fungal community structure, while soil phosphatase activity was identified as the driving factor for bacterial communities. Further analysis indicated that the T1 treatment resulted in higher network complexity, as evidenced by an increased number of nodes and edges.

Conclusions

In conclusion, fungi are more responsive to short-term organic fertilizer applications than bacteria, with single bio-organic fertilizer applications enhancing microbial network stability.