Publication Date
1993
Description
Preliminary studies are described which examine the fluxes of two important greenhouse gases from grassland systems, In the first, effects of different slurry application methods to a peat soil on the emission of N2O were examined. All methods resulted in a significant release of N20 at rates which varied with treatment, time and environmental conditions. The greatest rates of denitrification occurred with acidified slurry under wet conditions: this however, produced the lowest proportion of losses as N2O, In the second study, changes in CH4 concentration above a grazed sward were measured and indicated a definite positive flux from the system while the sheep were grazing. However, there were indications that the soil sward may have acted as n sink during their absence. Further quantification of the effects with both gases is required.
Citation
Jarvis, S C.; Hatch, D J.; and Dollard, G J., "Greenhouse Gas Exchanges with Temperate Grassland Systems" (2024). IGC Proceedings (1993-2023). 5.
https://uknowledge.uky.edu/igc/1993/session33/5
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Greenhouse Gas Exchanges with Temperate Grassland Systems
Preliminary studies are described which examine the fluxes of two important greenhouse gases from grassland systems, In the first, effects of different slurry application methods to a peat soil on the emission of N2O were examined. All methods resulted in a significant release of N20 at rates which varied with treatment, time and environmental conditions. The greatest rates of denitrification occurred with acidified slurry under wet conditions: this however, produced the lowest proportion of losses as N2O, In the second study, changes in CH4 concentration above a grazed sward were measured and indicated a definite positive flux from the system while the sheep were grazing. However, there were indications that the soil sward may have acted as n sink during their absence. Further quantification of the effects with both gases is required.
