What does this research mean for the field?

Adjusting soil acidity through the application of organic amendments, particularly 50% rabbit manure, effectively reduces heavy metal bioavailability and associated health risks in tea gardens. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate how substituting synthetic nitrogen fertilizers with organic amendments affects heavy metal migration, bioavailability, and human health risks in a soil–tea system.

September 2, 2026Eurasian Soil Science

Organic Amendment Effects on Heavy Metal Migration and Health Risk in a Soil–Tea System

View Full Paper

Ask AI

Bookmark

Authors

CHChengyi Huang WLWenjie Liu XMXinpeng Ma

Discussion

Member takes

Overview

Field experiment demonstrates that replacing synthetic fertilizer with organic amendments reduces heavy metal uptake in tea plants, indicating that raising soil pH minimizes health risks.

Key Points

To evaluate how substituting synthetic nitrogen fertilizers with organic amendments affects heavy metal migration, bioavailability, and human health risks in a soil–tea system.
Conducted a one-year field trial testing 30% and 50% synthetic nitrogen replacement with distillers' grains, rabbit manure, or rapeseed cake, with or without microbial inoculants.
Assessed soil chemical properties, metal speciation, tea metal concentrations, plant transfer factors, and human health risk indices using traditional statistical methods and machine learning.
Application of organic amendments, particularly 50% rabbit manure, increased soil pH from 3.9–4.0 to 4.36 and elevated organic carbon to 32.33 g/kg.
Tea metal concentrations followed the order Zn > Cu > Ni > Cr > Pb > Cd, with 50% substitution and microbial inoculation yielding lower transfer factors and health risks than the 30% rate.
All hazard quotients and hazard indices remained below 1, with soil pH and its interactions with phosphorus and organic carbon identified as the primary drivers suppressing metal bioavailability.

Cite This Study

Huang et al. (2026) studied this question.

synapsesocial.com/papers/6a97e28dc562ede874ec6c49 https://doi.org/10.1134/s1064229326601903

View Full Paper

Ask AI

Bookmark

September 2, 2026Eurasian Soil Science

Organic Amendment Effects on Heavy Metal Migration and Health Risk in a Soil–Tea System

View Full Paper

Ask AI

Bookmark

Authors

CHChengyi Huang WLWenjie Liu XMXinpeng Ma

Discussion

Member takes

Overview

Field experiment demonstrates that replacing synthetic fertilizer with organic amendments reduces heavy metal uptake in tea plants, indicating that raising soil pH minimizes health risks.

Key Points

To evaluate how substituting synthetic nitrogen fertilizers with organic amendments affects heavy metal migration, bioavailability, and human health risks in a soil–tea system.
Conducted a one-year field trial testing 30% and 50% synthetic nitrogen replacement with distillers' grains, rabbit manure, or rapeseed cake, with or without microbial inoculants.
Assessed soil chemical properties, metal speciation, tea metal concentrations, plant transfer factors, and human health risk indices using traditional statistical methods and machine learning.
Application of organic amendments, particularly 50% rabbit manure, increased soil pH from 3.9–4.0 to 4.36 and elevated organic carbon to 32.33 g/kg.
Tea metal concentrations followed the order Zn > Cu > Ni > Cr > Pb > Cd, with 50% substitution and microbial inoculation yielding lower transfer factors and health risks than the 30% rate.
All hazard quotients and hazard indices remained below 1, with soil pH and its interactions with phosphorus and organic carbon identified as the primary drivers suppressing metal bioavailability.

Cite This Study

Huang et al. (2026) studied this question.

synapsesocial.com/papers/6a97e28dc562ede874ec6c49 https://doi.org/10.1134/s1064229326601903

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

View Full Paper

Ask AI

Bookmark