Summary
This 2017 field study examined how nitrification inhibitors influence pathways of nitrogen gas emission from permanent grassland soil, with particular focus on the role of soil moisture as a modulating factor. The findings suggest that soil water content is a critical determinant of inhibitor efficacy in reducing N₂O emissions—a concern relevant to climate mitigation strategies in European livestock grazing systems. The moisture-dependent response implies that inhibitor effectiveness cannot be assumed constant across seasons or soil conditions.
UK applicability
The findings are directly applicable to UK grassland agriculture, where soil moisture varies seasonally and nitrification inhibitors are increasingly considered as a greenhouse gas mitigation tool in livestock farming. Understanding how rainfall and drainage patterns affect inhibitor performance could inform best-practice guidance for their use in UK pastoral systems.
Key measures
Fluxes of N₂O, NO, and N₂ emissions; soil moisture levels; nitrification inhibitor treatment effects
Outcomes reported
The study measured N₂O, NO, and N₂ emissions from permanent grassland soil treated with a nitrification inhibitor under varying soil moisture conditions. The research evaluated how soil water content modulates the efficacy of nitrification inhibitors in reducing gaseous nitrogen losses.
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