Nitrogen management in agrosystems in relation to the water framework directive was the overall theme for the 14th Nitrogen Workshop. This report is a synthesis of the contributions from this workshop, drawn from oral and poster presentations and from the discussions in the various working groups. This book is divided in eight main sections: 1) N flows at the regional level: policy implications of the Water Framework Drective. 2) N flows at the farm level: indicators and tools for improved N management. 3) Manure quality: can it be manipulated and what are the effects on whole-farm N efficiency. 4) Grassland renovation: prudent or risky? 5) Buffer strips and catch crops: cosmetic or beneficial? 6) Crop-related indicators: is the crop able to tell farmers what to do? 7) Soil-related indicators: ex ante hints or ex-post evaluation? 8) N turnover and losses at the plot scale: are detailed studies still informative?
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