Summary
This field study examined how spatial hotspots of nitrogen and carbon in grassland soil affect the magnitude and speciation of gaseous nitrogen losses. The findings suggest that managing the residence time of applied nitrogen in soil may reduce NO emissions whilst maintaining or improving nutrient availability for plant uptake, with potential implications for optimising fertiliser application protocols.
UK applicability
Direct applicability to UK grassland management and fertiliser practice. If the spatial heterogeneity effects on N emissions are confirmed across diverse UK soil and climatic conditions, the results could inform more efficient and lower-emission fertiliser application strategies for grazing and hay systems.
Key measures
Nitric oxide (NO) emissions, nitrous oxide (N₂O) emissions, nitrogen gas (N₂) emissions, nitrogen source residence time in soil, spatial heterogeneity of N and C distribution
Outcomes reported
The study measured emissions of nitric oxide (NO), nitrous oxide (N₂O), and nitrogen gas (N₂) from a UK grassland soil in relation to spatial hotspots of nitrogen and carbon. The research evaluated how the distribution and residence time of applied nitrogen sources influence gaseous nitrogen losses.
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