Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation
Context. An appropriate use of the fertiliser technology may lead to a more efficient N absorptionand to the reduction of economic and environmental costs. Aims. This study sought to quantify N2Oemissions generated from soil and the residual nitrate (NO3−) up to 2 m depth in field conditions in amai...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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CSIRO Publishing
2024
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/19308 https://www.publish.csiro.au/sr/fulltext/SR21094?subscribe=false https://doi.org/10.1071/SR21094 |
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| author | Alvarez, Carolina Álvarez, Carina R. Alves, Bruno J.R. Costantini, Alejandro Oscar |
| author_browse | Alvarez, Carolina Alves, Bruno J.R. Costantini, Alejandro Oscar Álvarez, Carina R. |
| author_facet | Alvarez, Carolina Álvarez, Carina R. Alves, Bruno J.R. Costantini, Alejandro Oscar |
| author_sort | Alvarez, Carolina |
| collection | INTA Digital |
| description | Context. An appropriate use of the fertiliser technology may lead to a more efficient N absorptionand to the reduction of economic and environmental costs. Aims. This study sought to quantify N2Oemissions generated from soil and the residual nitrate (NO3−) up to 2 m depth in field conditions in amaize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN andurea) at increasing N rates (0, 80, 160 and 250 kg N ha−1) in the Semi-arid Argentine Pampas.Methods. Throughout the crop cycle, emissions were monitored daily with static chambersduring the first week after fertilisation; then sampling frequency was gradually reduced until theend of the experiment. Key results. There were no yield responses to the use of differentsources and N rates. Crop N uptake saturated at 80 kg N ha−1, reaching 300–310 kg N ha−1.Residual NO3− increased significantly with the highest rates of N fertiliser. Total N2O emissionsdiffered significantly only among fertiliser rates. The N2O emissions were lower at 80 than at160 and 250 kg N ha−1. Conclusions. The N2O emissions measured were lower than thosecalculated by the IPCC, even when only direct emissions were considered. No grain yield increasewas observed due to N fertilisation, with a non-limiting supply of N-NO3− at the beginning of thecrop cycle and of N from mineralisation. Implications. This excess of N can generate negativeenvironmental effects due to higher emissions of N2O and residual N-NO3− that can be leached. |
| format | info:ar-repo/semantics/artículo |
| id | INTA19308 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | CSIRO Publishing |
| publisherStr | CSIRO Publishing |
| record_format | dspace |
| spelling | INTA193082024-09-09T14:30:17Z Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation Alvarez, Carolina Álvarez, Carina R. Alves, Bruno J.R. Costantini, Alejandro Oscar Impacto Ambiental Gases de Efecto Invernadero Riego Zea Mays Maiz Rendimiento de Cultivos Argentina Environmental Impact Greenhouse Gases Irrigation Maize Crop Yield Urea Nitrogen Fertilizers Abonos Nitrogenados Lixiviación de Nitrato Nitrate Leaching Fertilización Nitrogenada Context. An appropriate use of the fertiliser technology may lead to a more efficient N absorptionand to the reduction of economic and environmental costs. Aims. This study sought to quantify N2Oemissions generated from soil and the residual nitrate (NO3−) up to 2 m depth in field conditions in amaize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN andurea) at increasing N rates (0, 80, 160 and 250 kg N ha−1) in the Semi-arid Argentine Pampas.Methods. Throughout the crop cycle, emissions were monitored daily with static chambersduring the first week after fertilisation; then sampling frequency was gradually reduced until theend of the experiment. Key results. There were no yield responses to the use of differentsources and N rates. Crop N uptake saturated at 80 kg N ha−1, reaching 300–310 kg N ha−1.Residual NO3− increased significantly with the highest rates of N fertiliser. Total N2O emissionsdiffered significantly only among fertiliser rates. The N2O emissions were lower at 80 than at160 and 250 kg N ha−1. Conclusions. The N2O emissions measured were lower than thosecalculated by the IPCC, even when only direct emissions were considered. No grain yield increasewas observed due to N fertilisation, with a non-limiting supply of N-NO3− at the beginning of thecrop cycle and of N from mineralisation. Implications. This excess of N can generate negativeenvironmental effects due to higher emissions of N2O and residual N-NO3− that can be leached. EEA Manfredi Fil: Alvarez, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía; Argentina Fil: Alves, Bruno J. R. EMBRAPA - Agrobiología; Brasil Fil: Costantini, Alejandro Oscar. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Edafología; Argentina 2024-09-09T14:21:04Z 2024-09-09T14:21:04Z 2022-06-13 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/19308 https://www.publish.csiro.au/sr/fulltext/SR21094?subscribe=false 1838-675X 1838-6768 https://doi.org/10.1071/SR21094 eng info:eu-repograntAgreement/INTA/PNSUELO-1134042/AR./Aprovechamiento de residuos para aumentar el reciclado en el suelo. Sumideros de carbono y emisiones del suelo. info:eu-repo/semantics/restrictedAccess 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 CSIRO Publishing Soil Research 60 (8) : 782-791. (2022) |
| spellingShingle | Impacto Ambiental Gases de Efecto Invernadero Riego Zea Mays Maiz Rendimiento de Cultivos Argentina Environmental Impact Greenhouse Gases Irrigation Maize Crop Yield Urea Nitrogen Fertilizers Abonos Nitrogenados Lixiviación de Nitrato Nitrate Leaching Fertilización Nitrogenada Alvarez, Carolina Álvarez, Carina R. Alves, Bruno J.R. Costantini, Alejandro Oscar Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title | Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title_full | Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title_fullStr | Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title_full_unstemmed | Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title_short | Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation |
| title_sort | soil nitrous oxide emissions in a maize zea mays l crop in response to nitrogen fertilisation |
| topic | Impacto Ambiental Gases de Efecto Invernadero Riego Zea Mays Maiz Rendimiento de Cultivos Argentina Environmental Impact Greenhouse Gases Irrigation Maize Crop Yield Urea Nitrogen Fertilizers Abonos Nitrogenados Lixiviación de Nitrato Nitrate Leaching Fertilización Nitrogenada |
| url | http://hdl.handle.net/20.500.12123/19308 https://www.publish.csiro.au/sr/fulltext/SR21094?subscribe=false https://doi.org/10.1071/SR21094 |
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