caa a22 4500 60621982X CHVBK 20210128101120.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s11104-014-2264-9 doi (NATIONALLICENCE)springer-10.1007/s11104-014-2264-9 Trace gas fluxes from a Northern mixed-grass prairie interseeded with Alfalfa [Elektronische Daten] [L. Ingram, G. Schuman, T. Parkin, M. Mortenson] Aims: That legumes improve soil fertility is well established, however the extent that N fixed by legumes may increase trace gas emissions is poorly understood. Our aim was to determine if greater soil N in native prairies interseeded with alfalfa would increase trace gas emissions of nitrous oxide (N2O) and methane (CH4). Methods: A chronosequence study to investigate interseeded alfalfa on the fluxes of N2O and CH4 was undertaken on three prairie sites. At each site, native grasslands interseeded with alfalfa for 38, 16 and 5years, along with adjacent native grassland controls and native grasslands fertilized with a one-time addition of N fertilizer, were measured for NO2 and CH4 using static chambers. Results: Across interseeding years there were few significant differences between the three treatments (Native, Alfalfa, Fertilized). Despite increased soil N, the interseeded treatment released no more N2O than native grasslands. Methane uptake was generally greatest on interseeded grasslands and least on fertilized grasslands. Conclusions: Our results suggest that while alfalfa can increase soil N and improve productivity, it did not increase trace gas production relative to native grasslands. This is a win-win situation for ranchers wishing to increase soil fertility and thus their overall productivity and forage quality without increasing trace gas emissions. Springer International Publishing Switzerland, 2014 Alfalfa nationallicence Lucerne nationallicence Legume nationallicence Nitrous oxide nationallicence Methane nationallicence Semi-arid nationallicence NH4 + : Ammonium nationallicence NH4NO3 : Ammonium nitrate nationallicence CT : Chamber air temperature nationallicence GSM : Gravimetric soil moisture nationallicence Ni : Inorganic N (NO3 −-N + NH4 + −N) nationallicence NO3 − : Nitrate nationallicence TN : Total nitrogen nationallicence SOC : Soil organic C nationallicence STI : Soil temperature inside a chamber nationallicence STO : Soil temperature outside a chamber nationallicence WFPS : Water-filled pore space nationallicence Ingram L. Department of Renewable Resources, University of Wyoming, 82071, Laramie, WY, USA aut Schuman G. USDA-Agricultural Research Service, High Plains Grasslands Research Station, 82009, Cheyenne, WY, USA aut Parkin T. USDA-Agricultural Research Service, National Laboratory for Agriculture and the Environment, 50011, Ames, IA, USA aut Mortenson M. USDA-Agricultural Research Service, High Plains Grasslands Research Station, 82009, Cheyenne, WY, USA aut Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 285-301 0032-079X 386:1-2<285 2015 386 11104 https://doi.org/10.1007/s11104-014-2264-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-014-2264-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ingram L. Department of Renewable Resources, University of Wyoming, 82071, Laramie, WY, USA aut NATIONALLICENCE 700 1- Schuman G. USDA-Agricultural Research Service, High Plains Grasslands Research Station, 82009, Cheyenne, WY, USA aut NATIONALLICENCE 700 1- Parkin T. USDA-Agricultural Research Service, National Laboratory for Agriculture and the Environment, 50011, Ames, IA, USA aut NATIONALLICENCE 700 1- Mortenson M. USDA-Agricultural Research Service, High Plains Grasslands Research Station, 82009, Cheyenne, WY, USA aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 386/1-2(2015-01-01), 285-301 0032-079X 386:1-2<285 2015 386 11104