Influence of carbon-based organic fertilizer on soil microorganisms and vegetable growth in Sb-As co-contaminated soil: a synergistic mechanism of promotion and detoxification.

Authors

Shuwen Zhao, Xuanshuo Wang, Dan Wu, Yuling Yang, Yumin Yang, Yuxian Shangguan, Jining Li

Published in

Frontiers in plant science. Volume 17. Pages 1823671. Epub Aug 03, 2026.

Abstract

Antimony (Sb) and arsenic (As) co-contamination threatens crop production and food safety. Carbon-based organic fertilizers may simultaneously improve soil fertility, regulate microbial communities, and reduce metal(loid) mobility, but their performance in Sb-As co-contaminated vegetable systems remains unclear.
A pot experiment with pak choi was conducted to compare different carbon-based amendments, including magnesium sulfate-loaded biochar-based organic fertilizer (CBOF-M). Soil chemistry, pore-water elements, enzyme activities, rhizosphere microbial communities, plant growth, and elemental accumulation were evaluated.
Carbonaceous amendments reduced Sb mobility but increased As solubility. CBOF-M increased soil carbon, produced the highest plant biomass, reduced Sb translocation to edible tissues, and enriched Bacteroidota and Gemmatimonadota. Structural equation modeling identified an indirect microbiome-mediated pathway and a direct enzyme-mediated nutrient-cycling pathway.
Magnesium sulfate-loaded biochar-based organic fertilizer produced a promotion-detoxification synergy, although As mobilization remains a key constraint requiring formulation-specific control.

PMID:
42609357
Bibliographic data and abstract were imported from PubMed on 18 Aug 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.