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Organic field beans have low nitrous oxide emissions and high N-efficiency
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- Klemedtsson, Åsa Kasimir, 1956 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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- Nylinder, Josefine, 1974 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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- Klemedtsson, Leif, 1953 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences
- (creator_code:org_t)
- 2011
- 2011
- English.
- In: Nitrogen & Global Change 2011, Key Findings - Future Challenges.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- It has earlier been argued that organic farming is not as efficient as conventional, concerning yields and N retention. In search for agricultural systems having high N-efficiency and low N2O emission we have measured nitrous oxide (N2O) emission in organic and conventional (integrated) fields. In contrast to the suspicions we found in average a fairly low N2O emission for the organic beans (in average 0.39 kg N ha-1 y-1), also lower than conventional beans (2.3 kg N ha-1 y-1). The efficiency of the agricultural system can be expressed as N2O intensity, emission per harvest, aiming for a low number. The organic beans had the lowest intensity compared to the conventional beans (6 g respectively 22 g N2 Methods/ApproachO-N per kg N in harvest), this due to larger emission for conventional beans. The lower harvest for organic beans had a small impact on the intensity. The high emissions for conventional cropping system were found in autumn after harvest and RoundUp application, mitigation options may be found here.
Subject headings
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Jordbruksvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Agricultural Science (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
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