Controlling Gaseous Nitrogen Oxide Emissions from Grassland Farming Systems in Europe

EU - COGANOG

From 01/1997 to 12/1999

Principal Investigator: Gerhard Gebauer
Staff: Jutta Lauf, Nicole Wrage, Jens Tilsner
Grant: FAIR3 CT96-1920 COGANOG

The overall objectives of the project Controlling Gaseous Nitrogen Oxide emissions from Grassland Farming Systems (COGANOG) are: (i) quantifying nitrous oxide (N₂O) and nitrogen oxide plus nitrogen dioxide (NO_x = NO + NO₂) emissions from grassland farming systems in Europe, (ii) increasing the understanding of their controls, (iii) providing sustainable management options to reduce these emissions. The controbution of the Bayreuth subproject is focussed on the determination of the stable isotope (¹⁵N/¹⁴N and ¹⁸O/¹⁶O) compositions of N₂O emitted from the soils and of NH₄⁺ and NO₃^- in the soil for a wide range of conditions, using advanced analytical techniques. This will yield information about the relative contribution of the microbial processes of nitrification and denitrification to the total N₂O emissions from grasslands and information on their controls. Specific objectives are: (i) Testing the applicability of stable isotope measurements as a tool for discrimination between nitrification and denitrification as sources of N₂O for a range of grassland management types. (ii) Quantification of seasonal and total annual budgets of N₂O and NO_x emissions and of NH₄⁺ and NO₃^- in the soil for unfertilized and fertilized grassland at a site in Germany.

List of publications of this Project

Wrage, N; Lauf, J; del Prado, A; Pinto, M; Pietrzak, S; Yamulki, S; Oenema, O; Gebauer, G: Distinguishing sources of N2O in European grasslands by stable isotope analysis, Rapid Commun. Mass Spectrom., 18, 1201-1207 (2004), doi:10.1002/rcm.1461 -- Details

Pinto, M; Merino, P; del Prado, A; Estavillo, JM; Yamulki, S; Gebauer, G; Pietrzak, S; Lauf, J; Oenema, O: Increased emissions of nitric oxide and nitrous oxide following tillage of a perennial pasture, Nutrient Cycling in Agroecosystems, 70, 13-22 (2004), doi:10.1023/B:FRES.0000049357.79307.23 -- Details

Tilsner, J; Wrage, N; Lauf, J; Gebauer, G: Emission of gaseous nitrogen oxides from an extensively managed grassland in NE Bavaria, Germany. I. Annual budgets of N2O and NOx emissions, Biogeochemistry, 63, 229-247 (2003), doi:10.1023/A:1023365432388 -- Details

Tilsner, J; Wrage, N; Lauf, J; Gebauer, G: Emission of gaseous nitrogen oxides from an extensively managed grassland in NE Bavaria, Germany. II. Stable isotope natural abundance of N2O, Biogeochemistry, 63, 249-267 (2003), doi:10.1023/A:1023316315550 -- Details

Estavillo, JM; Merino, P; Pinto, M; Yamulki, S; Gebauer, G; Sapek, A; Corré, W: Short term effect of ploughing a permanent pasture on N2O production from nitrification and denitrification, Plant and Soil, 239, 253-265 (2002), doi:10.1023/A:1015062304915 -- Details

Gebauer, G; Lauf, J; May, C; Tilsner, J; Sapek, B; Sapek, A: Effects of type and amount of nitrogen fertiliser application and of liming on 15N abundance and total nitrogen concentrations in the soil and vegetation of grassland in Poland. in O. Oenema, A. Sapek: Effects of Liming and Nitrogen Fertilizer Application on Soil Acidity and Gaseous Nitrogen Oxide Emissions in Grassland Systems, Institute for Land Reclamation and Grassland Farming, Falenty, 84-95 (2000)

Velthof, GL; van Groenigen, JW; Gebauer, G; Pietrzak, S; Jarvis, SC; Pinto, M; Corré, W; Oenema, O: Temporal stability of spatial patterns of nitrous oxide fluxes from sloping grassland, J. Environmental Quality, 29, 1397-1407 (2000), doi:10.2134/jeq2000.00472425002900050005x -- Details

Oenema, O; Gebauer, G; Rodriguez, M; Sapek, A; Jarvis, SC; Corré, WJ; Yamulki, S: Controlling nitrous oxide emissions from grassland livestock production systems, Nutrient Cycling in Agroecosystems, 52, 141-149 (1998), doi:10.1023/A:1009732226587 -- Details