Senbayram, Mehmet

[["dc.bibliographiccitation.firstpage","221"],["dc.bibliographiccitation.journal","Biomass and Bioenergy"],["dc.bibliographiccitation.lastpage","229"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Chen, Ruirui"],["dc.contributor.author","Blagodatskaya, Evgenia"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Blagodatsky, Sergey A."],["dc.contributor.author","Myachina, Olga"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2018-11-07T09:05:19Z"],["dc.date.available","2018-11-07T09:05:19Z"],["dc.date.issued","2012"],["dc.description.abstract","The rapid development of biogas production will result in increased use of biogas residues as organic fertilizers. However, control of microbial activity by organic fertilizers remains a challenge for modern land use, especially with respect to mitigating greenhouse effects and increasing C sequestration in soil. To address this issue, we compared CO2 emissions, microbial growth and extracellular enzyme activities in agricultural soil amended with biogas residues (BGR) versus maize straw (MST). Over a 21 day incubation period, 6.4% of organic C added was mineralised and evolved as CO2 with BGR and 30% with MST. As shown by the substrate-induced growth respiration approach, BGR and MST significantly decreased the specific microbial growth rate (mu) and increased the microbial biomass C in the soil, indicating a clear shift in the microbial community to slower-growing microorganisms. Because of the reduced availability of C associated with the less labile C and more lignin in biogas residues, observed mu values and microbial biomass C were lower after BGR application than after MST application. After 21 days incubation, BGR had no effect on the activity of three extracellular enzymes: beta-glucosidase and cellobiohydrolase, both of which are involved in cellulose decomposition; and xylanase, which is involved in hemicellulose decomposition. In contrast, MST significantly increased the activity of these three enzymes. The application of biogas residues in short-term experiment leads to a 34% increase in soil C content and slower C turnover as compared to common maize residues. (c) 2012 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.biombioe.2012.06.014"],["dc.identifier.isi","000308384500024"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25289"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","0961-9534"],["dc.title","Decomposition of biogas residues in soil and their effects on microbial growth kinetics and enzyme activities"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17"],["dc.bibliographiccitation.journal","Soil and Tillage Research"],["dc.bibliographiccitation.lastpage","25"],["dc.bibliographiccitation.volume","143"],["dc.contributor.author","Schmeer, Maria"],["dc.contributor.author","Loges, Ralf"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Horn, Rainer"],["dc.contributor.author","Taube, Friedhelm"],["dc.date.accessioned","2018-11-07T09:33:22Z"],["dc.date.available","2018-11-07T09:33:22Z"],["dc.date.issued","2014"],["dc.description.abstract","Nitrous oxide (N2O) emissions from agriculture demand attention because they are the main source of total global anthropogenic N2O-emissions. High N-fertilization and soil compaction are important factors that increase N2O-emissions. On intensively managed grassland sites both factors occur. Knowledge of the interaction of high N-fertilization and simultaneous soil compaction on N2O-emissions is therefore essential, but previous studies about this scenario are rare. In the presented study, N-fertilized grass swards (G) and unfertilized lucerne-grass mixtures (LG) were compared over a three-year period (2006-2008): N2O-emissions and dry matter yield were measured as a function of N-fertilization (0 (LG), 360 kg N ha(-1) yr(-1) (G) as CAN) and soil compaction (0 (C0), 321 kPa (C321)) on a loamy stagnic Luvisol derived from glacial till in northern Germany. CO2-equivalents (CO(2)eq) per hectare and per unit metabolizable energy (GJ ME) were calculated. N2O-emissions were significantly influenced by the interaction N-fertilization x soil compaction; emissions increased significantly when both factors were induced simultaneously (G/C0: 8.74, LG/C0: 2.46, G/C321: 13.31 and LG/C321: 2.22 kg N2O-N ha(-1), respectively). Concerning the specific CO2-emissions, expressed in CO(2)eq (GJ ME)(-1), the N-fertilized G swards emitted 67% more CO(2)eq than LG swards assuming that 50% of the field plots were compacted due to heavy wheel traffic, which are reliable figures from agricultural practice. Neither dry matter (DM) yield nor forage quality (MJ ME (kg DM)(-1)) differed significantly between fertilized G and unfertilized LG swards. Hence, legume-based instead of fertilizer-based forage production is a promising mitigation option without significant reduction of DM yields. In addition, results regarding soil compaction effects on GHG-emissions emphasize the urgent need to implement controlled traffic systems on intensively managed grassland in order to reduce the area affected by heavy wheel traffic. (C) 2014 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.still.2014.05.001"],["dc.identifier.isi","000340698600003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31950"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1879-3444"],["dc.relation.issn","0167-1987"],["dc.title","Legume-based forage production systems reduce nitrous oxide emissions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S172"],["dc.bibliographiccitation.journal","The Journal of Agricultural Science"],["dc.bibliographiccitation.lastpage","S181"],["dc.bibliographiccitation.volume","152"],["dc.contributor.author","Claus, S."],["dc.contributor.author","Taube, Friedhelm"],["dc.contributor.author","Wienforth, Babette"],["dc.contributor.author","Svoboda, N."],["dc.contributor.author","Sieling, K."],["dc.contributor.author","Kage, Henning"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Gericke, D."],["dc.contributor.author","Pacholski, Andreas"],["dc.contributor.author","Herrmann, Alexander M."],["dc.date.accessioned","2018-11-07T09:31:38Z"],["dc.date.available","2018-11-07T09:31:38Z"],["dc.date.issued","2014"],["dc.description.abstract","A considerable expansion of biogas production in Germany, paralleled by a strong increase in maize acreage, has caused growing concern that greenhouse gas (GHG) emissions during crop substrate production might counteract the GHG emission saving potential. Based on a 2-year field trial, a GHG balance was conducted to evaluate the mitigation potential of regionally adapted cropping systems (continuous maize, maize-wheat-Italian ryegrass, perennial ryegrass ley), depending on nitrogen (N) level and N type. Considering the whole production chain, all cropping systems investigated contributed to the mitigation of GHG emissions (6.7-13.3 t CO2 eq/ha), with continuous maize revealing a carbon dioxide (CO2) saving potential of 55-61% compared with a fossil energy mix reference system. The current sustainability thresholds in terms of CO2 savings set by the EU Renewable Energy Directive could be met by all cropping systems (48-76%). Emissions from crop production had the largest impact on the mitigation effect (>= 50%) unless the biogas residue storage was not covered. The comparison of N fertilizer types showed less pronounced differences in GHG mitigation potential, whereas considerable site effects were observed."],["dc.identifier.doi","10.1017/S0021859613000683"],["dc.identifier.isi","000347710700017"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11568"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31576"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Cambridge Univ Press"],["dc.relation.issn","1469-5146"],["dc.relation.issn","0021-8596"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Life-cycle assessment of biogas production under the environmental conditions of northern Germany: greenhouse gas balance"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2356"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","2367"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Chen, Ruirui"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Blagodatsky, Sergey A."],["dc.contributor.author","Myachina, Olga"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Lin, Xiangui"],["dc.contributor.author","Blagodatskaya, Evgenia"],["dc.contributor.author","Kuzyakov, Yakov"],["dc.date.accessioned","2018-11-07T09:38:28Z"],["dc.date.available","2018-11-07T09:38:28Z"],["dc.date.issued","2014"],["dc.description.abstract","The increasing input of anthropogenically derived nitrogen (N) to ecosystems raises a crucial question: how does available N modify the decomposer community and thus affects the mineralization of soil organic matter (SOM). Moreover, N input modifies the priming effect (PE), that is, the effect of fresh organics on the microbial decomposition of SOM. We studied the interactive effects of C and N on SOM mineralization (by natural C-13 labelling adding C-4-sucrose or C-4-maize straw to C-3-soil) in relation to microbial growth kinetics and to the activities of five hydrolytic enzymes. This encompasses the groups of parameters governing two mechanisms of priming effects -microbial N mining and stoichiometric decomposition theories. In sole C treatments, positive PE was accompanied by a decrease in specific microbial growth rates, confirming a greater contribution of K-strategists to the decomposition of native SOM. Sucrose addition with N significantly accelerated mineralization of native SOM, whereas mineral N added with plant residues accelerated decomposition of plant residues. This supports the microbial mining theory in terms of N limitation. Sucrose addition with N was accompanied by accelerated microbial growth, increased activities of beta-glucosidase and cellobiohydrolase, and decreased activities of xylanase and leucine amino peptidase. This indicated an increased contribution of r-strategists to the PE and to decomposition of cellulose but the decreased hemicellulolytic and proteolytic activities. Thus, the acceleration of the C cycle was primed by exogenous organic C and was controlled by N. This confirms the stoichiometric decomposition theory. Both K-and r-strategists were beneficial for priming effects, with an increasing contribution of K-selected species under N limitation. Thus, the priming phenomenon described in 'microbial N mining' theory can be ascribed to K-strategists. In contrast, 'stoichiometric decomposition' theory, that is, accelerated OM mineralization due to balanced microbial growth, is explained by domination of r-strategists."],["dc.identifier.doi","10.1111/gcb.12475"],["dc.identifier.isi","000337680700029"],["dc.identifier.pmid","24273056"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33072"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2486"],["dc.relation.issn","1354-1013"],["dc.title","Soil C and N availability determine the priming effect: microbial N mining and stoichiometric decomposition theories"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2363"],["dc.bibliographiccitation.issue","21"],["dc.bibliographiccitation.journal","Rapid Communications in Mass Spectrometry"],["dc.bibliographiccitation.lastpage","2373"],["dc.bibliographiccitation.volume","27"],["dc.contributor.author","Koester, Jan Reent"],["dc.contributor.author","Well, Reinhard"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Giesemann, Anette"],["dc.contributor.author","Lewicka-Szczebak, Dominika"],["dc.contributor.author","Muehling, Karl-Hermann"],["dc.contributor.author","Herrmann, Antje"],["dc.contributor.author","Lammel, Joachim"],["dc.contributor.author","Senbayram, Mehmet"],["dc.date.accessioned","2018-11-07T09:17:33Z"],["dc.date.available","2018-11-07T09:17:33Z"],["dc.date.issued","2013"],["dc.description.abstract","RATIONALEN(2)O isotopomer ratios may provide a useful tool for studying N2O source processes in soils and may also help estimating N2O reduction to N-2. However, remaining uncertainties about different processes and their characteristic isotope effects still hamper its application. We conducted two laboratory incubation experiments (i) to compare the denitrification potential and N2O/(N2O+N-2) product ratio of denitrification of various soil types from Northern Germany, and (ii) to investigate the effect of N2O reduction on the intramolecular N-15 distribution of emitted N2O. METHODSThree contrasting soils (clay, loamy, and sandy soil) were amended with nitrate solution and incubated under N-2-free He atmosphere in a fully automated incubation system over 9 or 28 days in two experiments. N2O, N-2, and CO2 release was quantified by online gas chromatography. In addition, the N2O isotopomer ratios were determined by isotope-ratio mass spectrometry (IRMS) and the net enrichment factors of the N-15 site preference (SP) of the N2O-to-N-2 reduction step ((SP)) were estimated using a Rayleigh model. RESULTSThe total denitrification rate was highest in clay soil and lowest in sandy soil. Surprisingly, the N2O/(N2O+N-2) product ratio in clay and loam soil was identical; however, it was significantly lower in sandy soil. The IRMS measurements revealed highest N2O SP values in clay soil and lowest SP values in sandy soil. The (SP) values of N2O reduction were between -8.2 and -6.1 , and a significant relationship between O-18 and SP values was found. CONCLUSIONSBoth experiments showed that the N2O/(N2O+N-2) product ratio of denitrification is not solely controlled by the available carbon content of the soil or by the denitrification rate. Differences in N2O SP values could not be explained by variations in N2O reduction between soils, but rather originate from other processes involved in denitrification. The linear O-18 vs SP relationship may be indicative for N2O reduction; however, it deviates significantly from the findings of previous studies. Copyright (c) 2013 John Wiley & Sons, Ltd."],["dc.description.sponsorship","German Federal Environmental Foundation (DBU)"],["dc.identifier.doi","10.1002/rcm.6699"],["dc.identifier.isi","000325254300009"],["dc.identifier.pmid","24097392"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28198"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1097-0231"],["dc.relation.issn","0951-4198"],["dc.title","Soil denitrification potential and its influence on N2O reduction and N2O isotopomer ratios"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","20"],["dc.bibliographiccitation.journal","Journal of Plant Physiology"],["dc.bibliographiccitation.lastpage","30"],["dc.bibliographiccitation.volume","209"],["dc.contributor.author","Jakli, Balint"],["dc.contributor.author","Tavakol, Ershad"],["dc.contributor.author","Traenkner, Merle"],["dc.contributor.author","Senbayrama, Mehmet"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2018-11-07T10:27:55Z"],["dc.date.available","2018-11-07T10:27:55Z"],["dc.date.issued","2017"],["dc.description.abstract","Potassium (K) is crucial for crop growth and is strongly related to stress tolerance and water-use efficiency (WUE). A major physiological effect of K deficiency is the inhibition of net CO2 assimilation (AN) during photosynthesis. Whether this reduction originates from limitations either to photochemical energy conversion or biochemical CO2 fixation or from a limitation to CO2 diffusion through stomata and the leaf mesophyll is debated. In this study, limitations to photosynthetic carbon gain of sunflower (Helianthus annuus L.) under K deficiency and PEG-induced water deficit were quantified and their implications on plant-and leaf-scale WUE (WUEp, WUEL) were evaluated. Results show that neither maximum quantum use efficiency (F-v/F-m) nor in-vivo RubisCo activity were directly affected by K deficiency and that the observed impairment of A(N) was primarily due to decreased CO2 mesophyll conductance (g(m)). K deficiency additionally impaired leaf area development which, together with reduced A(N), resulted in inhibition of plant growth and a reduction of WUEp. Contrastingly, WUEL was not affected by K supply which indicated no inhibition of stomatal control. PEG-stress further impeded A(N) by stomatal closure and resulted in enhanced WUEL and high oxidative stress. It can be concluded from this study that reduction of g(m) is a major response of leaves to K deficiency, possibly due to changes in leaf anatomy, which negatively affects A(N) and contributes to the typical symptoms like oxidative stress, growth inhibition and reduced WUEp. (C) 2016 Elsevier GmbH. All rights reserved."],["dc.description.sponsorship","K+S KALI GmbH, Kassel, Germany"],["dc.identifier.doi","10.1016/j.jplph.2016.11.010"],["dc.identifier.isi","000395687400003"],["dc.identifier.pmid","28012363"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43319"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1618-1328"],["dc.relation.issn","0176-1617"],["dc.title","Quantitative limitations to photosynthesis in K deficient sunflower and their implications on water-use efficiency"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","99"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Agronomy and Crop Science"],["dc.bibliographiccitation.lastpage","110"],["dc.bibliographiccitation.volume","204"],["dc.contributor.author","Jákli, B."],["dc.contributor.author","Hauer-Jákli, M."],["dc.contributor.author","Böttcher, F."],["dc.contributor.author","Meyer zur Müdehorst, J."],["dc.contributor.author","Senbayram, M."],["dc.contributor.author","Dittert, K."],["dc.date.accessioned","2020-12-10T18:28:54Z"],["dc.date.available","2020-12-10T18:28:54Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1111/jac.12239"],["dc.identifier.issn","0931-2250"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76447"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Leaf, canopy and agronomic water-use efficiency of field-grown sugar beet in response to potassium fertilization"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4"],["dc.bibliographiccitation.journal","Agriculture Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","12"],["dc.bibliographiccitation.volume","147"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Chen, R."],["dc.contributor.author","Budai, A."],["dc.contributor.author","Bakken, L."],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2018-11-07T09:14:22Z"],["dc.date.available","2018-11-07T09:14:22Z"],["dc.date.issued","2012"],["dc.description.abstract","Amending agricultural soils with organic residues is frequently recommended to improve soil fertility and to sequester carbon for counteracting global warming. However, such amendments will enhance microbial respiration, hence denitrification. Therefore, the assessment of effects on global warming must take N2O emission and the N2O/(N2O + N-2) product ratio of denitrification into account. There are some indications that the product ratio of denitrification is positively correlated with the ratio of available NO3- and available organic C in soils, but more research is needed to unravel quantitative relationships in well defined experiments. We conducted two laboratory incubation experiments, with the objective (i) to test the impact of the application of various N containing organic substrates including biogas residue on the denitrification rate and on N2O emission, and (ii) to investigate the effect of various NO3- concentrations on the denitrification rate and the N2O/(N2O + N-2) product ratio under standardized anoxic conditions in soils collected from long-term organic or inorganic fertilizer plots. In experiment 1, we found that biogas residue was more recalcitrant than maize straw, despite a high concentration of soluble organic C. High respiration (treatments with maize straw and sucrose) resulted in a transient peak in N2O emission, declining rapidly towards zero as nitrate concentrations reached less than 20 mg NO3--N kg(-1) dry soil. Application of biogas residue had a more moderate effect on soil respiration and denitrification, and resulted in a more long lasting peak in N2O emission. The results were interpreted as a result of a gradual increase in the relative activity of N2O reductase (thus lowering of the N2O/(N2O + N-2) product ratio of denitrification) throughout the incubation, most likely controlled by concentration of available NO3- in soil. In the second experiment, we found low N2O/(N2O N-2) product ratios for the treatment where NO3- concentrations were <= 2 mM, and the ratios were clearly lower in manure fertilized than in mineral fertilizer treated soil. Much higher N2O/(N2O + N-2) product ratios were found for the treatments with >= 10 mM NO3-, and the ratios were remarkably independent of the soil's fertilizer history. We conclude that (i) in N-fertilized agricultural soils, application of organic matter with high contents of labile C may trigger denitrification-derived N2O emission whereas (ii) in soils with low NO3- contents such application may substantially lower the N2O/(N2O + N-2) product ratio and hence N2O emission. (C) 2011 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","Schleswig-Holstein Ministry of Economy and Science"],["dc.identifier.doi","10.1016/j.agee.2011.06.022"],["dc.identifier.isi","000300926400002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/27393"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0167-8809"],["dc.title","N2O emission and the N2O/(N2O + N-2) product ratio of denitrification as controlled by available carbon substrates and nitrate concentrations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1671"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Soil Biology and Biochemistry"],["dc.bibliographiccitation.lastpage","1677"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Koester, Jan Reent"],["dc.contributor.author","Cardenas, Laura M."],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Bol, Roland"],["dc.contributor.author","Well, Reinhard"],["dc.contributor.author","Butler, Mark"],["dc.contributor.author","Muehling, Karl Hermann"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2018-11-07T08:53:50Z"],["dc.date.available","2018-11-07T08:53:50Z"],["dc.date.issued","2011"],["dc.description.abstract","Nitrous oxide (N(2)O) is one of the major greenhouse gases emitted from soils, where it is mainly produced by nitrification and denitrification. It is well known that rates of N(2)O release from soils are mainly determined by the availability of substrates and oxygen, but N(2)O source apportioning, highly needed to advance N(2)O mitigation strategies, still remains challenging. In this study, using an automated soil incubation system, the N(2)O site preference, i.e. the intramolecular 1514 distribution, was analyzed to evaluate the progression in N(2)O source processes following organic soil amendment. Biogas fermentation residue (BGR; originating from food waste fermentation) was applied to repacked grassland soil cores and compared to ammonium sulfate (AS) application, both at rates equivalent to 160 kg NH(4)(+)-N ha(-1), and to unamended soil (control). The soil cores were incubated in a helium-oxygen atmosphere with 20 kPa O(2) for 43 days at 80% water-filled pore space. 43-day cumulative N(2)O emissions were highest with BGR treated soil accounting for about 1.68 kg N(2)O-N ha(-1) while application of AS caused much lower fluxes of c. 0.23 kg N(2)O-N ha(-1). Also, after BGR application, carbon dioxide (CO(2)) fluxes showed a pronounced initial peak with steep decline until day 21 whereas with ammonium addition they remained at the background level. N(2)O dual isotope and isotopomer analysis of gas samples collected from BGR treated soil indicated bacterial denitrification to be the main N(2)O generating process during the first three weeks when high CO(2) fluxes signified high carbon availability. In contrast, in the second half after all added labile carbon substrates had been consumed, nitrification, i.e. the generation of N(2)O via oxidation of hydroxylamine, gained in importance reaching roughly the same N(2)O production rate compared to bacterial denitrification as indicated by N(2)O SP. Overall in this study, bacterial denitrification seemed to be the main N(2)O forming process after application of biogas residues and fluxes were mainly driven by available organic carbon. (C) 2011 Elsevier Ltd. All rights reserved."],["dc.description.sponsorship","Biotechnology and Biological Sciences Research Council (BBSRC)"],["dc.identifier.doi","10.1016/j.soilbio.2011.04.004"],["dc.identifier.isi","000292995300007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22523"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","0038-0717"],["dc.title","Rapid shift from denitrification to nitrification in soil after biogas residue application as indicated by nitrous oxide isotopomers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","35"],["dc.bibliographiccitation.volume","430"],["dc.contributor.author","Tavakol, Ershad"],["dc.contributor.author","Jákli, Bálint"],["dc.contributor.author","Cakmak, Ismail"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Karlovsky, Petr"],["dc.contributor.author","Pfohl, Katharina"],["dc.contributor.author","Senbayram, Mehmet"],["dc.date.accessioned","2020-12-10T14:11:48Z"],["dc.date.available","2020-12-10T14:11:48Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1007/s11104-018-3704-8"],["dc.identifier.eissn","1573-5036"],["dc.identifier.issn","0032-079X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71209"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Optimized potassium nutrition improves plant-water-relations of barley under PEG-induced osmotic stress"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]