Dittert, Klaus

[["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.artnumber","1133"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Avenhaus, Ulrike"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Liese, Rebecca"],["dc.contributor.author","Lingner, Annika"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Salinas-Riester, Gabriela"],["dc.contributor.author","Pommerenke, Claudia"],["dc.contributor.author","Schulze, Joachim"],["dc.date.accessioned","2018-11-07T10:19:28Z"],["dc.date.available","2018-11-07T10:19:28Z"],["dc.date.issued","2016"],["dc.description.abstract","Nitrogenase is an oxygen labile enzyme. Microaerobic conditions within the infected zone of nodules are maintained primarily by an oxygen diffusion barrier (ODB) located in the nodule cortex. Flexibility of the ODB is important for the acclimation processes of nodules in response to changes in external oxygen concentration. The hypothesis of the present study was that there are additional molecular mechanisms involved. Nodule activity of Medicago truncatula plants were continuously monitored during a change from 21 to 25 or 30% oxygen around root nodules by measuring nodule H-2 evolution. Within about 2 min of the increase in oxygen concentration, a steep decline in nitrogenase activity occurred. A quick recovery commenced about 8 min later. A qPCR-based analysis of the expression of genes for nitrogenase components showed a tendency toward upregulation during the recovery. The recovery resulted in a new constant activity after about 30 min, corresponding to approximately 90% of the pre-treatment level. An RNAseq-based comparative transcriptome profiling of nodules at that point in time revealed that genes for nodule-specific cysteine-rich (NCR) peptides, defensins, leghaemoglobin and chalcone and stilbene synthase were significantly upregulated when considered as a gene family. A gene for a nicotianamine synthase-like protein (Medtr1g084050) showed a strong increase in count number. The gene appears to be of importance for nodule functioning, as evidenced by its consistently high expression in nodules and a strong reaction to various environmental cues that influence nodule activity. A Tnt1-mutant that carries an insert in the coding sequence (cds) of that gene showed reduced nitrogen fixation and less efficient acclimation to an increased external oxygen concentration. It was concluded that sudden increases in oxygen concentration around nodules destroy nitrogenase, which is quickly counteracted by an increased neoformation of the enzyme. This reaction might be induced by increased formation of NCR peptides and necessitates an efficient iron supply to the bacteroid, which is probably mediated by nicotianamine. The paper is dedicated to the 85th birthday of Prof. Dr. Gunther Schilling, University of Halle/Wittenberg, Germany, https://de.wikipedia.org/wiki/Gunther_Schilling"],["dc.description.sponsorship","Open-Access Publikationsfonds 2015"],["dc.identifier.doi","10.3389/fpls.2015.01133"],["dc.identifier.isi","000367654300001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12764"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41665"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Frontiers Media Sa"],["dc.relation.issn","1664-462X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Short-Term Molecular Acclimation Processes of Legume Nodules to Increased External Oxygen Concentration"],["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","8743"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Sustainability"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Ivens, Sven"],["dc.contributor.author","Wiese, Gerlinde"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Oberle, Monika"],["dc.contributor.author","Mußhoff, Oliver"],["dc.date.accessioned","2021-04-14T08:32:28Z"],["dc.date.available","2021-04-14T08:32:28Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.3390/su12208743"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17627"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83929"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","MDPI"],["dc.relation.eissn","2071-1050"],["dc.relation.orgunit","Sozialwissenschaftliche Fakultät"],["dc.relation.orgunit","Institut für Politikwissenschaft"],["dc.relation.orgunit","Arbeitsbereich Didaktik der Politik"],["dc.rights","CC BY 4.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Bringing Policy Decisions to the People—Education for Sustainable Development through a Digital Simulation Game"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e00933"],["dc.bibliographiccitation.journal","Global Ecology and Conservation"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Wang, Haitao"],["dc.contributor.author","Köbke, Sarah"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2021-04-14T08:26:00Z"],["dc.date.available","2021-04-14T08:26:00Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.gecco.2020.e00933"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17369"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81801"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","2351-9894"],["dc.rights","CC BY 4.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Use of urease and nitrification inhibitors to reduce gaseous nitrogen emissions from fertilizers containing ammonium nitrate and urea"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","European Journal of Soil Science"],["dc.contributor.affiliation","Beule, Lukas; 3\r\nMolecular Phytopathology and Mycotoxin Research, Faculty of Agricultural Sciences\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Zang, Huadong; 4\r\nCollege of Agronomy and Biotechnology\r\nChina Agricultural University\r\nBeijing China"],["dc.contributor.affiliation","Pfeiffer, Birgit; 5\r\nInstitute of Microbiology and Genetics, Department of Genomic and Applied Microbiology\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Karlovsky, Petr; 3\r\nMolecular Phytopathology and Mycotoxin Research, Faculty of Agricultural Sciences\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.affiliation","Dittert, Klaus; 1\r\nDepartment of Crop Science, Division of Plant Nutrition and Crop Physiology\r\nUniversity of Göttingen\r\nGöttingen Germany"],["dc.contributor.author","Wang, Haitao"],["dc.contributor.author","Beule, Lukas"],["dc.contributor.author","Zang, Huadong"],["dc.contributor.author","Pfeiffer, Birgit"],["dc.contributor.author","Ma, Shutan"],["dc.contributor.author","Karlovsky, Petr"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2021-04-14T08:31:30Z"],["dc.date.available","2021-04-14T08:31:30Z"],["dc.date.issued","2020"],["dc.date.updated","2022-02-09T13:21:36Z"],["dc.description.abstract","Abstract Nitrogen (N) fertilization is the major contributor to nitrous oxide (N2O) emissions from agricultural soil, especially in post‐harvest seasons. This study was carried out to investigate whether ryegrass serving as cover crop affects soil N2O emissions and denitrifier community size. A microcosm experiment was conducted with soil planted with perennial ryegrass (Lolium perenne L.) and bare soil, each with four levels of N fertilizer (0, 5, 10 and 20 g N m−2; applied as calcium ammonium nitrate). The closed‐chamber approach was used to measure soil N2O fluxes. Real‐time PCR was used to estimate the biomass of bacteria and fungi and the abundance of genes involved in denitrification in soil. The results showed that the presence of ryegrass decreased the nitrate content in soil. Cumulative N2O emissions of soil with grass were lower than in bare soil at 5 and 10 g N m−2. Fertilization levels did not affect the abundance of soil bacteria and fungi. Soil with grass showed greater abundances of bacteria and fungi, as well as microorganisms carrying narG, napA, nirK, nirS and nosZ clade I genes. It is concluded that ryegrass serving as a cover crop holds the potential to mitigate soil N2O emissions in soils with moderate or high NO3− concentrations. This highlights the importance of cover crops for the reduction of N2O emissions from soil, particularly following N fertilization. Future research should explore the full potential of ryegrass to reduce soil N2O emissions under field conditions as well as in different soils. Highlights This study was to investigate whether ryegrass serving as cover crop affects soil N2O emissions and denitrifier community size; Plant reduced soil N substrates on one side, but their root exudates stimulated denitrification on the other side; N2O emissions were lower in soil with grass than bare soil at medium fertilizer levels, and growing grass stimulated the proliferation of almost all the denitrifying bacteria except nosZ clade II; Ryegrass serving as a cover crop holds the potential to mitigate soil N2O emissions."],["dc.description.sponsorship","China Scholarship Council http://dx.doi.org/10.13039/501100004543"],["dc.description.sponsorship","The National Science Project for University of Anhui Province"],["dc.identifier.doi","10.1111/ejss.13047"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83616"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.publisher","Blackwell Publishing Ltd"],["dc.relation.eissn","1365-2389"],["dc.relation.issn","1351-0754"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","The potential of ryegrass as cover crop to reduce soil N2O emissions and increase the population size of denitrifying bacteria"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Rummel, Pauline Sophie"],["dc.contributor.author","Pfeiffer, Birgit"],["dc.contributor.author","Pausch, Johanna"],["dc.contributor.author","Well, Reinhard"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2020-05-27T11:48:41Z"],["dc.date.accessioned","2021-10-27T13:20:18Z"],["dc.date.available","2020-05-27T11:48:41Z"],["dc.date.available","2021-10-27T13:20:18Z"],["dc.date.issued","2020"],["dc.description.abstract","Chemical composition of root and shoot litter controls decomposition and, subsequently, C availability for biological nitrogen transformation processes in soils. While aboveground plant residues have been proven to increase $ emissions, studies on root litter effects are scarce. This study aimed (1) to evaluate how fresh maize root litter affects $ emissions compared to fresh maize shoot litter, (2) to assess whether $ emissions are related to the interaction of C and N mineralization from soil and litter, and (3) to analyze changes in soil microbial community structures related to litter input and $ emissions. To obtain root and shoot litter, maize plants (Zea mays L.) were cultivated with two N fertilizer levels in a greenhouse and harvested. A two-factorial 22 d laboratory incubation experiment was set up with soil from both N levels (N1, N2) and three litter addition treatments (control, root, root + shoot). We measured $ and $ fluxes, analyzed soil mineral N and water-extractable organic C (WEOC) concentrations, and determined quality parameters of maize litter. Bacterial community structures were analyzed using 16S rRNA gene sequencing. Maize litter quality controlled ^−_3$ and WEOC availability and decomposition-related $ emissions. Emissions induced by maize root litter remained low, while high bioavailability of maize shoot litter strongly increased $ and $ emissions when both root and shoot litter were added. We identified a strong positive correlation between cumulative $ and $ emissions, supporting our hypothesis that litter quality affects denitrification by creating plant-litter-associated anaerobic microsites. The interdependency of C and N availability was validated by analyses of regression. Moreover, there was a strong positive interaction between soil ^−_3$ and WEOC concentration resulting in much higher $ emissions, when both ^−_3$ and WEOC were available. A significant correlation was observed between total $ and $ emissions, the soil bacterial community composition, and the litter level, showing a clear separation of root + shoot samples of all remaining samples. Bacterial diversity decreased with higher N level and higher input of easily available C. Altogether, changes in bacterial community structure reflected degradability of maize litter with easily degradable C from maize shoot litter favoring fast-growing C-cycling and N-reducing bacteria of the phyla Actinobacteria, Chloroflexi, Firmicutes, and Proteobacteria. In conclusion, litter quality is a major driver of $ and $ emissions from crop residues, especially when soil mineral N is limited."],["dc.identifier.doi","10.5194/bg-2019-320"],["dc.identifier.doi","10.5194/bg-2019-320-supplement"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17344"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91954"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.orgunit","Fakultät für Agrarwissenschaften"],["dc.rights","CC BY 4.0"],["dc.rights.access","openAccess"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","NITROUS-OXIDE EMISSIONS; CHEMICAL-COMPOSITION; MICROBIAL BIOMASS; CROP RESIDUES; SP-NOV.; HETEROTROPHIC NITRIFICATION; NITRIFIER DENITRIFICATION; CARBON MINERALIZATION; AGROFORESTRY RESIDUES; BIOCHEMICAL QUALITY"],["dc.subject.ddc","630"],["dc.title","Maize root and shoot litter quality controls short-term $ and $ emissions and bacterial community structure of arable soil"],["dc.type","preprint"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5309"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Applied Sciences"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Rummel, Pauline Sophie"],["dc.contributor.author","Well, Reinhard"],["dc.contributor.author","Pausch, Johanna"],["dc.contributor.author","Pfeiffer, Birgit"],["dc.contributor.author","Dittert, Klaus"],["dc.date.accessioned","2021-07-05T15:00:41Z"],["dc.date.available","2021-07-05T15:00:41Z"],["dc.date.issued","2021"],["dc.description.abstract","Returning crop residues to agricultural fields can accelerate nutrient turnover and increase N2O and NO emissions. Increased microbial respiration may lead to formation of local hotspots with anoxic or microoxic conditions promoting denitrification. To investigate the effect of litter quality on CO2, NO, N2O, and N2 emissions, we conducted a laboratory incubation study in a controlled atmosphere (He/O2, or pure He) with different maize litter types (Zea mays L., young leaves and roots, straw). We applied the N2O isotopocule mapping approach to distinguish between N2O emitting processes and partitioned the CO2 efflux into litter- and soil organic matter (SOM)-derived CO2 based on the natural 13C isotope abundances. Maize litter increased total and SOM derived CO2 emissions leading to a positive priming effect. Although C turnover was high, NO and N2O fluxes were low under oxic conditions as high O2 diffusivity limited denitrification. In the first week, nitrification contributed to NO emissions, which increased with increasing net N mineralization. Isotopocule mapping indicated that bacterial processes dominated N2O formation in litter-amended soil in the beginning of the incubation experiment with a subsequent shift towards fungal denitrification. With onset of anoxic incubation conditions after 47 days, N fluxes strongly increased, and heterotrophic bacterial denitrification became the main source of N2O. The N2O/(N2O+N2) ratio decreased with increasing litter C:N ratio and Corg:NO3− ratio in soil, confirming that the ratio of available C:N is a major control of denitrification product stoichiometry."],["dc.description.abstract","Returning crop residues to agricultural fields can accelerate nutrient turnover and increase N2O and NO emissions. Increased microbial respiration may lead to formation of local hotspots with anoxic or microoxic conditions promoting denitrification. To investigate the effect of litter quality on CO2, NO, N2O, and N2 emissions, we conducted a laboratory incubation study in a controlled atmosphere (He/O2, or pure He) with different maize litter types (Zea mays L., young leaves and roots, straw). We applied the N2O isotopocule mapping approach to distinguish between N2O emitting processes and partitioned the CO2 efflux into litter- and soil organic matter (SOM)-derived CO2 based on the natural 13C isotope abundances. Maize litter increased total and SOM derived CO2 emissions leading to a positive priming effect. Although C turnover was high, NO and N2O fluxes were low under oxic conditions as high O2 diffusivity limited denitrification. In the first week, nitrification contributed to NO emissions, which increased with increasing net N mineralization. Isotopocule mapping indicated that bacterial processes dominated N2O formation in litter-amended soil in the beginning of the incubation experiment with a subsequent shift towards fungal denitrification. With onset of anoxic incubation conditions after 47 days, N fluxes strongly increased, and heterotrophic bacterial denitrification became the main source of N2O. The N2O/(N2O+N2) ratio decreased with increasing litter C:N ratio and Corg:NO3− ratio in soil, confirming that the ratio of available C:N is a major control of denitrification product stoichiometry."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft"],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.3390/app11115309"],["dc.identifier.pii","app11115309"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87882"],["dc.language.iso","en"],["dc.notes.intern","DOI Import DOI-Import GROB-441"],["dc.relation.eissn","2076-3417"],["dc.relation.orgunit","Abteilung Pflanzenernährung und Ertragsphysiologie"],["dc.rights","CC BY 4.0"],["dc.title","Carbon Availability and Nitrogen Mineralization Control Denitrification Rates and Product Stoichiometry during Initial Maize Litter Decomposition"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6031"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","International Journal of Molecular Sciences"],["dc.bibliographiccitation.lastpage","6045"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Lingner, Annika"],["dc.contributor.author","Liese, Rebecca"],["dc.contributor.author","Sulieman, Saad"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Traenkner, Merle"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Schulze, Joachim"],["dc.date.accessioned","2018-11-07T09:41:34Z"],["dc.date.available","2018-11-07T09:41:34Z"],["dc.date.issued","2014"],["dc.description.abstract","Legumes match the nodule number to the N demand of the plant. When a mutation in the regulatory mechanism deprives the plant of that ability, an excessive number of nodules are formed. These mutants show low productivity in the fields, mainly due to the high carbon burden caused through the necessity to supply numerous nodules. The objective of this study was to clarify whether through optimal conditions for growth and CO2 assimilation a higher nodule activity of a supernodulating mutant of Medicago truncatula (M. truncatula) can be induced. Several experimental approaches reveal that under the conditions of our experiments, the nitrogen fixation of the supernodulating mutant, designated as sunn (super numeric nodules), was not limited by photosynthesis. Higher specific nitrogen fixation activity could not be induced through short-or long-term increases in CO2 assimilation around shoots. Furthermore, a whole plant P depletion induced a decline in nitrogen fixation, however this decline did not occur significantly earlier in sunn plants, nor was it more intense compared to the wild-type. However, a distinctly different pattern of nitrogen fixation during the day/night cycles of the experiment indicates that the control of N-2 fixing activity of the large number of nodules is an additional problem for the productivity of supernodulating mutants."],["dc.identifier.doi","10.3390/ijms15046031"],["dc.identifier.fs","608778"],["dc.identifier.isi","000336841200057"],["dc.identifier.pmid","24727372"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11711"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33763"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mdpi Ag"],["dc.relation.issn","1422-0067"],["dc.rights.access","openAccess"],["dc.subject.mesh","Carbon Dioxide"],["dc.subject.mesh","Medicago truncatula"],["dc.subject.mesh","Nitrogen"],["dc.subject.mesh","Nitrogen Fixation"],["dc.subject.mesh","Phosphorus"],["dc.subject.mesh","Photosynthesis"],["dc.subject.mesh","Plant Shoots"],["dc.subject.mesh","Root Nodules, Plant"],["dc.title","The Activity of Nodules of the Supernodulating Mutant Mt(sunn) Is not Limited by Photosynthesis under Optimal Growth Conditions"],["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","57"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","69"],["dc.bibliographiccitation.volume","249"],["dc.contributor.author","Ruser, Reiner"],["dc.contributor.author","Fuß, Roland"],["dc.contributor.author","Andres, Monique"],["dc.contributor.author","Hegewald, Hannes"],["dc.contributor.author","Kesenheimer, Katharina"],["dc.contributor.author","Köbke, Sarah"],["dc.contributor.author","Räbiger, Thomas"],["dc.contributor.author","Quinones, Teresa Suarez"],["dc.contributor.author","Augustin, Jürgen"],["dc.contributor.author","Christen, Olaf"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Kage, Henning"],["dc.contributor.author","Lewandowski, Iris"],["dc.contributor.author","Prochnow, Annette"],["dc.contributor.author","Stichnothe, Heinz"],["dc.contributor.author","Flessa, Heinz"],["dc.date.accessioned","2019-07-09T11:44:51Z"],["dc.date.available","2019-07-09T11:44:51Z"],["dc.date.issued","2017"],["dc.description.abstract","Winter oilseed rape (Brassica napus L., WOSR) is the major oil crop cultivated in Europe. Rapeseed oil is predominantly used for production of biodiesel. The framework of the European Renewable Energy Directive requires that use of biofuels achieves GHG savings of at least 50% compared to use of fossil fuel starting in 2018. However, N2O field emissions are estimated using emission factors that are not specific for the crop and associated with strong uncertainty. N2O field emissions are controlled by N fertilization and dominate the GHG balance of WOSR cropping due to the high global warming potential of N2O. Thus, field experiments were conducted to increase the data basis and subsequently derive a new WOSR-specific emission factor. N2O emissions and crop yields were monitored for three years over a range of N fertilization intensities at five study sites representative of German WOSR production. N2O fluxes exhibited the typical high spatial and temporal variability in dependence on soil texture, weather and nitrogen availability. The annual N2O emissions ranged between 0.24 kg and 5.48 kg N2O-N ha−1 a−1. N fertilization increased N2O emissions, particularly with the highest N treatment (240 kg N ha−1). Oil yield increased up to a fertilizer amount of 120 kg N ha−1, higher N-doses increased grain yield but decreased oil concentrations in the seeds. Consequently oil yield remained constant at higher N fertilization. Since, yield-related emission also increased exponentially with N surpluses, there is potential for reduction of the N fertilizer rate, which offers perspectives for the mitigation of GHG emissions. Our measurements double the published data basis of annual N2O flux measurements in WOSR. Based on this extended dataset we modeled the relationship between N2O emissions and fertilizer N input using an exponential model. The corresponding new N2O emission factor was 0.6% of applied fertilizer N for a common N fertilizer amount under best management practice in WOSR production (200 kg N ha−1 a−1). This factor is substantially lower than the linear IPCC Tier 1 factor (EF1) of 1.0% and other models that have been proposed."],["dc.identifier.doi","10.1016/j.agee.2017.07.039"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14925"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59111"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","0167-8809"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","630"],["dc.title","Nitrous oxide emissions from winter oilseed rape cultivation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","836"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Plant Nutrition and Soil Science"],["dc.bibliographiccitation.lastpage","845"],["dc.bibliographiccitation.volume","182"],["dc.contributor.author","Khanal, Gunadhish"],["dc.contributor.author","Wachendorf, Christine"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Willich, Melanie"],["dc.contributor.author","Dietz, Herbert"],["dc.contributor.author","Buerkert, Andreas"],["dc.contributor.author","Ingold, Mariko"],["dc.date.accessioned","2020-12-10T14:06:49Z"],["dc.date.available","2020-12-10T14:06:49Z"],["dc.date.issued","2019"],["dc.description.abstract","Abstract Under the hot and moist conditions of irrigated agriculture in the arid subtropics, turnover of organic matter is high, which can lead to considerable carbon (C) and nitrogen (N) losses. Therefore, sustainable use of these soils requires regular manure application at high rates. To investigate the contribution of consecutive manure applications to an arid sandy soil to various soil N pools, goat manure was isotopically labeled by feeding 15N‐enriched Rhodes grass hay and applied to the soil during a two‐year field experiment. In the first year, soils received 15N‐labeled manure to distinguish between soil‐derived and manure‐derived N. In the second year, these plots were split for the application of either 15N‐labeled or unlabeled manure to discriminate N derived from previous (first year) and recent (second year) manure application. Soil samples (of control and 15N‐manured soil) were collected at the end of the first and the second year, and incubated in two laboratory experiments with labeled or unlabeled manure. At the beginning of Experiment 1, 7% of total N, 11% of K2SO4 extractable N, and 16% of microbial biomass N were derived from previously field‐applied manure. While the application of manure during incubation increased microbial biomass N by 225% and 410% in the control soil and the previously field‐manured soil, respectively, N2O emissions were more affected on the control soil, releasing considerable amounts of the soil N‐pool (80% of total emissions). In Experiment 2, 4% of total N, 7% of K2SO4 extractable N, and 7% of microbial biomass N derived from previously applied manure, and 4%, 8%, and 3% from recently applied manure, respectively. Microbial biomass N and N2O‐N derived from manure declined with time after manure application, whereas in Experiment 1 this tendency was only observed for microbial biomass N."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG) http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1002/jpln.201800340"],["dc.identifier.issn","1436-8730"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70036"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited."],["dc.title","Nitrogen turnover in a repeatedly manured arid subtropical soil: Incubation studies with 15 N isotopes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]