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To quantify nitrate leaching from swards continuously grazed by cattle - NT0605

Description
Large quantities of nitrogen fertiliser are used in continuous intensive grazing systems and a large proportion of this nitrogen is recycled through dung and urine from the grazing animal and back to land. In contrast, nitrogen use in systems of grass conservation is more efficient due to the removal of nitrogen in the conserved grass. Research is needed to quantify nitrate leaching under continuous intensive grazing by cattle and to establish the effect of grazing, followed by grass conservation strategies, on nitrate leaching. The objective is to quantify nitrate leaching from swards that are continuously grazed by cattle and from swards grazed in spring and summer only, followed by grass conservation, on sandy and shallow chalk soils. This experiment will contribute to the understanding of the factors influencing nitrogen cycling in grassland systems and the amounts of nitrogen moving down different pathways.


Time-Scale and Cost
From: 1988

To: 1993

Cost: £62,000
Contractor / Funded Organisations
ADAS UK Ltd.
Keywords
              
Fields of Study
Fertilisers and Nitrate Pollution