Summary
This field study applied an advanced triple 15N isotopic tracing method to simultaneously quantify distinct nitrogen transformation pathways in UK grassland soil, providing refined rate estimates for mineralisation, nitrification, and denitrification. The technique enables more precise partitioning of soil N cycling processes than conventional single-tracer approaches. As suggested by the authors, broader applicability would benefit from validation across contrasting soil types and management contexts to support improved N management in grassland-based farming systems.
UK applicability
The study was conducted on UK grassland, making the findings directly applicable to UK grassland-based livestock farming systems. The methodology provides a tool for refining nitrogen management practices on British farms, though site-specific validation may be needed across different soil types and climatic regions within the UK.
Key measures
Rates of nitrogen mineralisation, nitrification, and denitrification as measured by triple 15N isotopic labelling and tracing
Outcomes reported
The study quantified nitrogen mineralisation, nitrification, and denitrification rates in grassland soil using a triple 15N isotopic tracing technique. The methodology provided simultaneous, refined estimates of distinct N transformation pathways under field conditions.
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