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September 15, 2026International Journal of Environmental Health Research

Microbial activity response and immobilization of cadmium in saturated-unsaturated soils with the combined application of sepiolite and goat fertilizer

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Authors

YLYiyun LiuQHQingqing HuangYXYingming Xu

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Overview

Experimental study demonstrates reduced cadmium accumulation in pak choi crops via sepiolite and goat manure amendments, indicating effective remediation through altered soil microbial communities.

Key Points

  • To evaluate cadmium immobilization, plant uptake, and rhizosphere microbial community responses under saturated and unsaturated soil conditions following sepiolite and goat manure application.
  • Treated cadmium-contaminated soils under saturated and unsaturated moisture regimes with sepiolite, goat manure, or a combined amendment.
  • Measured cadmium accumulation in pak choi shoots alongside soil chemical shifts in pH and dissolved organic matter.
  • Profiled rhizosphere bacterial communities and environmental correlations using Illumina high-throughput sequencing and redundancy analysis.
  • Sepiolite and goat manure lowered cadmium accumulation in pak choi shoots by 37.3%–75.3% and 57.7%–60.7%, respectively.
  • Sepiolite increased soil pH while decreasing dissolved organic matter, whereas goat manure elevated both parameters under saturated and unsaturated conditions.
  • Goat manure expanded overall bacterial abundance, with Proteobacteria reaching peak levels in saturated soils treated jointly with sepiolite and goat manure.

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6aa913ba9013453be30a1cd4https://doi.org/10.1080/09603123.2026.2733118
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