Scholarly record
THE IMPACT OF SOIL TREATMENT AND MOISTURE REGIME ON N2O EMISSIONS FROM AGRICULTURAL SOIL
Abstract
Nitrous oxide N2O is one of the major contributors to global warming and ozone depletion in the stratosphere. Management of agricultural soils is the largest source of N2O emissions in agricultural sector, therefore simultaneous and accurate measurement of N2O concentration is necessary. Nitrous oxide emission is formed within nitrification and denitrification processes in agricultural soils. The agricultural sector is one of the largest sources of greenhouse gas emissions in Latvia as it accounted for 24.6 % of the total greenhouse emissions in the country in 2017. The aim of the study was to compare the effects of conventional tillage and minimal tillage and different moisture regimes on N2O emissions from agricultural soils. During the vegetation season 2019 in Latvia, 24 unmixed soil samples as well as two reference samples were taken from different crop fields: winter wheat, bean, winter rapeseed, summer barley. Soil samples were collected from Latvia University of Life Sciences and Technologies study farm ?Peterlauki? located in Platone parish. Measurements of N2O emissions from soil samples under various moisture conditions were performed in a laboratory with a Picarro G2508 spectrophotometer. N2O emission measurements show the complex nature of N2O gas formation, where a number of factors influence the action of microorganisms, such as soil temperature, soil structure, soil reaction, the availability of nitrogen ions in the soil, the availability of degradable material and water in the soil. Crop rotation, tillage, nitrogen sources and indicators in collaboration with the time and depth of nitrogen compounds interactions have a significant impact on N2O emissions into the soil. In almost all measurements of N2O emissions there was observed a tendency for emissions to increase in soil samples with minimal tillage in all moisture regimes. The exception occurred in measurements from over-watered bean soil sample with minimal tillage ? N2O emissions increased rapidly only during the last days of performed experiment.
Publication Impact Profile
- Citations
- Scopus - Citation Indexes: 2
- Captures
- Mendeley - Readers: 10
Publication details
References0
Structured references will appear here after the reference import pass. The count is preserved now so the scholarly record is not incomplete.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.