Award details

Leaching and ion transport in grassland soils.

Reference	BBS/E/G/00003010
Principal Investigator / Supervisor	Professor David Scholefield
Co-Investigators / Co-Supervisors	Professor Philip Matthew Haygarth, Professor Stephen Jarvis
Institution	Inst of Grassland and Environmental Res
Department	Inst of Grassland and Environmental Res Department
Funding type	Research
Value (£)	76,044
Status	Completed
Type	Institute Project
Start date	01/04/1997
End date	31/03/1999
Duration	24 months

Abstract

The aims of the work are to provide information from which the extent and dynamics of NO3- leaching and the effects of grassland management can be determined. Movement of NO3 ions in soil solutions from relatively immobile pockets into macro and micropores into preferential or piston/displacement flows is an important determinant of losses of NO3. Stable isotopes will be used in field lysimeter and laboratory systems to examine soil and environmental variables and characteristics determining flows of NO3 in structured and unstructured grassland soils. Unique, field based systems have been developed to provide near real time measurements of solute and water flow in different components of the soil profile. Data are being used to test existing leaching models and provide information for leaching studies (PU 02) and policy based catchment modelling (PU 35). The research is collaborative with Plymouth University . Studies are also being undertaken on mobile P species and their transfer in different hydrological pathways (with Sheffield and Plymouth Universities and FBA), in order to provide controls over P loss and prevention of eutrophication (links with and underpins strategic research in PU 58 to determine export coefficients for P in grassland).

Summary

unavailable

Committee	Closed Committee - Agri-food (AF)
Research Topics	X – not assigned to a current Research Topic
Research Priority	X – Research Priority information not available
Research Initiative	X - not in an Initiative
Funding Scheme	X – not Funded via a specific Funding Scheme

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