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Palmqvist, Martin, 2012. Nitrous oxide and methane emissions from a long-term fertilizer experiment. First cycle, G2E. Uppsala: SLU, Dept. of Microbiology



Because of the increasing concentration of methane (CH4) and nitrous oxide (N2O) in the atmosphere, there is an increasing concern about the emissions of these two gases from agricultural land. Both CH4 and N2O are major contributors to the greenhouse effect and agricultural lands constitute a large contributor of the anthropogenic load of these gases. Agricultural land is also something that will always be needed, so a long term view towards sustainability is needed. In situ measurements of CH4 and N2O emissions were conducted on a long‐term fertilizer experiment in Uppsala. The aim was to compare the emissions from the different fertilizing regimes. The fertilizers investigated were ammonium sulphate ((NH4)2SO4, manure and sewage sludge in comparison to unfertilized plots. The emissions were related to the differences in soil properties and weather conditions at the site at the time of sampling. The emission measurements were constricted two occasions. Negative CH4 emissions indicated that the soils were net sinks and there was no difference between treatments and time points. The two sampling occasions showed slightly different results regarding N2O with higher emissions in February, but there were no statistically significant differences. In April 2008 the sewage sludge amended soil had the highest emissions while the results from February 2009 showed that the manure fertilized soil had highest emissions.

Main title:Nitrous oxide and methane emissions from a long-term fertilizer experiment
Authors:Palmqvist, Martin
Supervisor:Hallin, Sara
Examiner:Börjesson, Gunnar
Series:Examensarbete / Sveriges lantbruksuniversitet, Institutionen för mikrobiologi
Volume/Sequential designation:2012:2
Year of Publication:2012
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:NY003 Agricultural Programme - Soil/Plant 270 HEC
Supervising department:(NL, NJ) > Dept. of Microbiology
Keywords:Nitrous oxide, Methane, Fertilizer
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Agricultural research
Soil biology
Deposited On:21 Jun 2012 13:23
Metadata Last Modified:21 Jun 2012 13:23

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