Summary
This field experiment investigated how biochar soil amendment influences the taxonomic and functional composition of nitrous oxide-reducing microbial communities. The authors applied biochar to agricultural soil and characterised shifts in nosZ-harbouring bacteria and archaea, as suggested by molecular analysis of functional genes. The findings contribute to understanding how soil carbon amendments may modulate greenhouse gas emissions through effects on denitrifier communities.
UK applicability
The study was conducted in Switzerland with temperate agricultural soils; findings may be broadly applicable to UK farming systems under similar climate and soil conditions. Results could inform soil amendment practices aimed at mitigating N₂O emissions in UK arable and mixed farming systems, though local validation would strengthen adoption.
Key measures
Microbial community composition of nitrous oxide reductase (nosZ) gene-harbouring organisms; diversity indices; relative abundance of functional groups
Outcomes reported
The study examined how biochar soil amendment alters the community composition and diversity of nitrous oxide-reducing bacteria and archaea in field conditions. It measured shifts in microbial taxa responsible for the final step of denitrification, which converts N₂O to inert N₂.
Topic tags
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