Award details

Gaseous losses of N and other compounds.

Reference	BBS/E/G/00003019
Principal Investigator / Supervisor	Professor Stephen Jarvis
Co-Investigators / Co-Supervisors	Dr Sirwan Yamulki
Institution	Inst of Grassland and Environmental Res
Department	Inst of Grassland and Environmental Res Department
Funding type	Research
Value (£)	55,353
Status	Completed
Type	Institute Project
Start date	01/04/1997
End date	31/03/1999
Duration	24 months

Abstract

The emissions of trace gases (N2O, NOx, NH3 and CH4) from grazed grassland soils are considerable but difficult to quantify. This project has allowed the development of a range of techniques to enable the provision of robust measurements of fluxes of these gases under both field and laboratory conditions. Controls over emission and uptake in grazed grassland are complex with inputs of substrates from fertilizers, animal excreta and through the mineralization of soil organic matter. Research is aimed at providing understanding of the environmental and soil controls over the processes responsible for the generation of gases (through denitrification, nitrification, methanogenesis and ammonia volatilization) so that predictive capacity can be improved. Of particular interest are (i) the interaction and coupling of denitrification and nitrification and the release of N2O and NO; (ii) the interaction between leaching and denitrification at depth in the soil profile and (iii) the short range dispersal and deposition of NH3 from grazed swards. The work conducted in this project is linked with, and provides understanding for, strategic research undertaken for MAFF in PU 57 and PU 02.

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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