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Reviewing the Potential for Reductions of Nitrogen and Phosphorus Inputs in Current Farm Systems: A Specification of Project Requirements - ES0201

This is a multidisciplinary team based exercise that will be coordinated to review existing knowledge of:

a)the scope for reductions of nitrogen and phosphorus inputs with existing farm systems.

b)the potential role of reducing inputs in relation to other mitigation measures.

c)the extent to which measures to reduce nutrient emissions from agriculture are required in different areas of the UK.

A way forward on where further research will also be provided.
1.)To determine the broad degree to which surface waterts in different areas of the UK have nutrient levels which are above `natural`/`background` levels likely tobe consistent with healthy indigenous ecosystems.

2.)Define the purposes of nitrogen and phosphorus within farm inputs and the composition of inputs which include them. Horticultural crops should be included in this objective.

3.)Assess the scope for reduction in levels of nitrogen and phosphorus inputs into current farm systems, including for example manure nutrient management, nitrogen only fertilisers, reduced phosphorus levels in animal feeds and the use of phased feeds. Determine other impacts or benefits of suggested measures. Horticultural crops should be included in this objective.

4.)Determine the correlation between levels of farm inputs and emissions to water and how far this can be affected by land management practices and farm infrastructure.

5.)Assess the extent to which it is possible to draw conclusions about whether the individual approaches identified as possible ways of reducing inputs are likely to be more cost-effective than other approaches or likely to provide additional benefits to water quality and aquatic ecologies. Assess what information is available on the value of reductions in nitrogen and phosphorus which could enable us to assess the costs and benefits of action.

6.)Define a way forward for further research.
Project Documents
• Final Report : ES0201 CSG15 final report.doc   (102k)
• Final Report - Annex : Zipped version of full final report (3.6MB)   (3583k)
Time-Scale and Cost
From: 2004

To: 2004

Cost: £83,370
Contractor / Funded Organisations
Institute of Grassland and Environment Research (IGER)
Environmental Protection