Summary
This field trial investigated the potential of zeolite soil amendment to mitigate nitrous oxide emissions from paddy rice grown under alternate wetting and drying irrigation. The authors report that zeolite application reduced N2O emissions, as suggested by the title, likely through effects on soil water dynamics and nitrification–denitrification processes. The findings add to evidence that mineral soil amendments may offer a practical mitigation strategy for reducing greenhouse gas emissions in irrigated rice production systems.
Regional applicability
This study was conducted in China and focuses on paddy rice production, a farming system of limited direct relevance to UK agriculture. However, the principles of using zeolite to modify soil water and nutrient cycling may have broader application to UK arable systems where irrigation is practised, particularly as climate change increases irrigation demand in the south and east.
Key measures
N2O emission rates (likely in kg N2O-N ha⁻¹ or mg m⁻² h⁻¹), soil moisture dynamics, soil nitrogen cycling variables, and potentially grain yield
Outcomes reported
The study measured nitrous oxide (N2O) emissions from paddy fields managed under alternate wetting and drying irrigation, comparing plots with and without zeolite amendment. It reports the magnitude of N2O mitigation and the mechanisms by which zeolite reduces these greenhouse gas emissions.
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