Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina
The need to accurately estimate gaseous nitrogen losses from soils is required to have a better understanding of the processes involved as well as soil and environmental conditions, and management practices contributing to these emissions. The objective was to quantify the denitrification rate using...
| Autores principales: | , , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Scientific Research
2019
|
| Materias: | |
| Acceso en línea: | https://www.scirp.org/Journal/PaperInformation.aspx?PaperID=49736 http://hdl.handle.net/20.500.12123/4330 https://doi.org/10.4236/ojss.2014.49033 |
| _version_ | 1855035302650839040 |
|---|---|
| author | Picone, Liliana Videla, Cecilia Picaud, Calypso Lisa García, Fernando Oscar Rizzalli, Roberto Héctor |
| author_browse | García, Fernando Oscar Picaud, Calypso Lisa Picone, Liliana Rizzalli, Roberto Héctor Videla, Cecilia |
| author_facet | Picone, Liliana Videla, Cecilia Picaud, Calypso Lisa García, Fernando Oscar Rizzalli, Roberto Héctor |
| author_sort | Picone, Liliana |
| collection | INTA Digital |
| description | The need to accurately estimate gaseous nitrogen losses from soils is required to have a better understanding of the processes involved as well as soil and environmental conditions, and management practices contributing to these emissions. The objective was to quantify the denitrification rate using undisturbed cores with acetylene, as related to nitrogen (N) fertilization rate in a spring wheat crop (Triticum aestivum L.) under conventional tillage. Soil denitrification losses remained low throughout most of the growing season, when water-filled pore space (WFPS) was below 60%, ranging from 0.79 to 447.3 g N2O-N ha-1•day-1 in the fertilized plot and was less than 47.3 g N2O-N ha-1•day-1 in the control. Denitrification rates were the highest when N fertilizer was applied after frequent and intensive rain. A good correlation was found between the logarithm of the daily denitrification rate and WFPS (r = 0.67, n = 90); however the NO3-N concentration was not a good indicator (r = 0.21, n = 90). Cumulative N2O-N losses by denitrification averaged 3.5 and 0.9 kg N2O-N ha-1 in the fertilized and unfertilized treatment, respectively, during a period of 4 months this difference was not significant. Most N2O-N losses occurred early in the spring; therefore sampling schedules need to focus on this period. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4330 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Scientific Research |
| publisherStr | Scientific Research |
| record_format | dspace |
| spelling | INTA43302019-01-25T11:50:13Z Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina Picone, Liliana Videla, Cecilia Picaud, Calypso Lisa García, Fernando Oscar Rizzalli, Roberto Héctor Suelo Denitrificación Trigo Nitrógeno Pérdidas desde Suelos Soil Denitrification Wheat Nitrogen Losses from Soil Región Pampeana Húmeda Argentina The need to accurately estimate gaseous nitrogen losses from soils is required to have a better understanding of the processes involved as well as soil and environmental conditions, and management practices contributing to these emissions. The objective was to quantify the denitrification rate using undisturbed cores with acetylene, as related to nitrogen (N) fertilization rate in a spring wheat crop (Triticum aestivum L.) under conventional tillage. Soil denitrification losses remained low throughout most of the growing season, when water-filled pore space (WFPS) was below 60%, ranging from 0.79 to 447.3 g N2O-N ha-1•day-1 in the fertilized plot and was less than 47.3 g N2O-N ha-1•day-1 in the control. Denitrification rates were the highest when N fertilizer was applied after frequent and intensive rain. A good correlation was found between the logarithm of the daily denitrification rate and WFPS (r = 0.67, n = 90); however the NO3-N concentration was not a good indicator (r = 0.21, n = 90). Cumulative N2O-N losses by denitrification averaged 3.5 and 0.9 kg N2O-N ha-1 in the fertilized and unfertilized treatment, respectively, during a period of 4 months this difference was not significant. Most N2O-N losses occurred early in the spring; therefore sampling schedules need to focus on this period. EEA Balcarce Fil: Picone, Liliana. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Videla, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Picaud, Calypso Lisa. Institut des Sciences et Industries du Vivant et de l’Environnement. AgroParisTech; Francia Fil: García, Fernando Oscar. International Plant Nutrition Institute (IPNI). Programa Cono Sur de Latinoamérica; Argentina Fil: Rizzalli, Roberto Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina 2019-01-25T11:48:55Z 2019-01-25T11:48:55Z 2014-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.scirp.org/Journal/PaperInformation.aspx?PaperID=49736 http://hdl.handle.net/20.500.12123/4330 2162-5360 2162-5379 https://doi.org/10.4236/ojss.2014.49033 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Scientific Research Open Journal of Soil Science 4 (9) : 312-322 (September 2014) |
| spellingShingle | Suelo Denitrificación Trigo Nitrógeno Pérdidas desde Suelos Soil Denitrification Wheat Nitrogen Losses from Soil Región Pampeana Húmeda Argentina Picone, Liliana Videla, Cecilia Picaud, Calypso Lisa García, Fernando Oscar Rizzalli, Roberto Héctor Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title | Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title_full | Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title_fullStr | Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title_full_unstemmed | Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title_short | Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina |
| title_sort | denitrification in a soil under wheat crop in the humid pampas of argentina |
| topic | Suelo Denitrificación Trigo Nitrógeno Pérdidas desde Suelos Soil Denitrification Wheat Nitrogen Losses from Soil Región Pampeana Húmeda Argentina |
| url | https://www.scirp.org/Journal/PaperInformation.aspx?PaperID=49736 http://hdl.handle.net/20.500.12123/4330 https://doi.org/10.4236/ojss.2014.49033 |
| work_keys_str_mv | AT piconeliliana denitrificationinasoilunderwheatcropinthehumidpampasofargentina AT videlacecilia denitrificationinasoilunderwheatcropinthehumidpampasofargentina AT picaudcalypsolisa denitrificationinasoilunderwheatcropinthehumidpampasofargentina AT garciafernandooscar denitrificationinasoilunderwheatcropinthehumidpampasofargentina AT rizzallirobertohector denitrificationinasoilunderwheatcropinthehumidpampasofargentina |