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Nanobubble oxygenated increases crop production via soil structure improvement: The perspective of microbially mediated effects

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  • Chen, Weijie
  • Bastida, Felipe
  • Liu, Yanzheng
  • Zhou, Yunpeng
  • He, Jing
  • Song, Peng
  • Kuang, Naikun
  • Li, Yunkai

Abstract

Compaction and lack of permeability are common problems in continuously farmed soils and have a negative impact on crop yields. Regulation of the microbial community in the plant rhizosphere has been envisaged as a promising approach to alleviate these physical damages in soil. The effects of Nanobubble oxygen (NBO2) on the soil structure and the bacterial community were investigated using X-ray tomography and 16 S rRNA amplicon sequencing. The results indicated that NBO2 significantly improved the soil structure and permeability. NBO2 increased the total porosity by43.2%, from 18.74% to 26.82%, and the pore connectivity by 355.1%, from 2922 to 13301, respectively. The structural equation model (SEM) demonstrated that NBO2 had direct impacts on soil structure by increasing microbial community diversity and changing interactions among microbial species. In addition, NBO2 directly impacted the soil structure by reducing the formation of soil biofilms and the stability of soil macroaggregates. In addition, the NBO2 treatment indirectly affected the soil structure by altering the community composition and promoting the decomposition of unstable organic carbon, resulting in improved soil porosity and pore connectivity. Our results highlight the efficiency of NBO2 in improving soil structure and provide mechanistic knowledge on the microbial-mediated processes for the improvement of crop yield and quality using oxygenated drip irrigation.

Suggested Citation

  • Chen, Weijie & Bastida, Felipe & Liu, Yanzheng & Zhou, Yunpeng & He, Jing & Song, Peng & Kuang, Naikun & Li, Yunkai, 2023. "Nanobubble oxygenated increases crop production via soil structure improvement: The perspective of microbially mediated effects," Agricultural Water Management, Elsevier, vol. 282(C).
    • Handle: RePEc:eee:agiwat:v:282:y:2023:i:c:s0378377423001282
    DOI: 10.1016/j.agwat.2023.108263
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    References listed on IDEAS

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    1. Joachim von Braun & Kaosar Afsana & Louise O. Fresco & Mohamed Hassan, 2021. "Food systems: seven priorities to end hunger and protect the planet," Nature, Nature, vol. 597(7874), pages 28-30, September.
    2. Zhou, Yunpeng & Zhou, Bo & Xu, Feipeng & Muhammad, Tahir & Li, Yunkai, 2019. "Appropriate dissolved oxygen concentration and application stage of micro-nano bubble water oxygation in greenhouse crop plantation," Agricultural Water Management, Elsevier, vol. 223(C), pages 1-1.
    3. Wang, Jingwei & Du, Yadan & Niu, Wenquan & Han, Jinxian & Li, Yuan & Yang, Pingguo, 2022. "Drip irrigation mode affects tomato yield by regulating root–soil–microbe interactions," Agricultural Water Management, Elsevier, vol. 260(C).
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