Impact of land use during winter on the balance of greenhouse gases
The increase in atmospheric greenhouse gases (GHGs) can be mitigated by capturing CO2 from the atmosphere and/or by reducing their emissions. Replacing winter intercrop fallow by cover crops (CCs) can sequester carbon and improve nitrogen use efficiency under proper management. We monitored two cycl...
| Main Authors: | , , , , , |
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| Format: | Artículo |
| Language: | Inglés |
| Published: |
Wiley
2018
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| Online Access: | http://hdl.handle.net/20.500.12123/4006 https://onlinelibrary.wiley.com/doi/full/10.1111/sum.12458 https://doi.org/10.1111/sum.12458 |
| _version_ | 1855483347094994944 |
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| author | Posse Beaulieu, Gabriela Lewczuk, Nuria Andrea Di Bella, Carlos Marcelo Richter, Klaus Oricchio, Patricio Hilbert, Jorge Antonio |
| author_browse | Di Bella, Carlos Marcelo Hilbert, Jorge Antonio Lewczuk, Nuria Andrea Oricchio, Patricio Posse Beaulieu, Gabriela Richter, Klaus |
| author_facet | Posse Beaulieu, Gabriela Lewczuk, Nuria Andrea Di Bella, Carlos Marcelo Richter, Klaus Oricchio, Patricio Hilbert, Jorge Antonio |
| author_sort | Posse Beaulieu, Gabriela |
| collection | INTA Digital |
| description | The increase in atmospheric greenhouse gases (GHGs) can be mitigated by capturing CO2 from the atmosphere and/or by reducing their emissions. Replacing winter intercrop fallow by cover crops (CCs) can sequester carbon and improve nitrogen use efficiency under proper management. We monitored two cycles of a cash crop namely soybean (soy1) and double‐cropping soybean (soy2) and their respective post‐harvest periods. During the first period, a winter crop (wheat) was used as an alternative to CCs, and in the second period, a chemical fallow treatment (bare soil) was applied. Carbon dioxide and N2O exchange rates were estimated with turbulent flux measurements and N2O fluxes with complementary static chambers. During the soy1/wheat sequence, the soil gained 2800 kg C eq/ha, while during the soy2/bare fallow sequence the soil lost 5083 kg C eq/ha. Excluding the carbon exported by harvest, both sequences lost carbon, but the soy2/bare fallow cycle was fivefold higher. The replacement of bare fallow by a winter cover crop like wheat decreases N2O emissions considerably and converts carbon losses (by respiration) into gains (by fixation in photosynthesis). The replacement of traditional non‐harvested cover crops by winter wheat may provide not only similar advantages in terms of soil improvement, preservation, and reduction in nitrogen loss, but also an additional harvest. It will be necessary to adjust the fertilization of this cover crop to prevent excess nitrogen from accumulating in soils. |
| format | Artículo |
| id | INTA4006 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA40062018-12-04T13:07:44Z Impact of land use during winter on the balance of greenhouse gases Posse Beaulieu, Gabriela Lewczuk, Nuria Andrea Di Bella, Carlos Marcelo Richter, Klaus Oricchio, Patricio Hilbert, Jorge Antonio Utilización de la Tierra Gases de Efecto Invernadero Barbecho Desnudo Cultivos de Invierno Dióxido de Carbono Oxido Nitroso Land Use Greenhouse Gases Bare Fallow Winter Crops Carbon Dioxide Nitrous Oxide Eddy Covariance The increase in atmospheric greenhouse gases (GHGs) can be mitigated by capturing CO2 from the atmosphere and/or by reducing their emissions. Replacing winter intercrop fallow by cover crops (CCs) can sequester carbon and improve nitrogen use efficiency under proper management. We monitored two cycles of a cash crop namely soybean (soy1) and double‐cropping soybean (soy2) and their respective post‐harvest periods. During the first period, a winter crop (wheat) was used as an alternative to CCs, and in the second period, a chemical fallow treatment (bare soil) was applied. Carbon dioxide and N2O exchange rates were estimated with turbulent flux measurements and N2O fluxes with complementary static chambers. During the soy1/wheat sequence, the soil gained 2800 kg C eq/ha, while during the soy2/bare fallow sequence the soil lost 5083 kg C eq/ha. Excluding the carbon exported by harvest, both sequences lost carbon, but the soy2/bare fallow cycle was fivefold higher. The replacement of bare fallow by a winter cover crop like wheat decreases N2O emissions considerably and converts carbon losses (by respiration) into gains (by fixation in photosynthesis). The replacement of traditional non‐harvested cover crops by winter wheat may provide not only similar advantages in terms of soil improvement, preservation, and reduction in nitrogen loss, but also an additional harvest. It will be necessary to adjust the fertilization of this cover crop to prevent excess nitrogen from accumulating in soils. Instituto de Clima y Agua Fil: Posse Beaulieu, Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina Fil: Lewczuk, Nuria Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Di Bella, Carlos Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina Fil: Richter, Klaus. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina Fil: Oricchio, Patricio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina Fil: Hilbert, Jorge Antonio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; Argentina 2018-12-04T13:00:52Z 2018-12-04T13:00:52Z 2018 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4006 https://onlinelibrary.wiley.com/doi/full/10.1111/sum.12458 1475-2743 https://doi.org/10.1111/sum.12458 eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley Soil use and management (09 October 2018) |
| spellingShingle | Utilización de la Tierra Gases de Efecto Invernadero Barbecho Desnudo Cultivos de Invierno Dióxido de Carbono Oxido Nitroso Land Use Greenhouse Gases Bare Fallow Winter Crops Carbon Dioxide Nitrous Oxide Eddy Covariance Posse Beaulieu, Gabriela Lewczuk, Nuria Andrea Di Bella, Carlos Marcelo Richter, Klaus Oricchio, Patricio Hilbert, Jorge Antonio Impact of land use during winter on the balance of greenhouse gases |
| title | Impact of land use during winter on the balance of greenhouse gases |
| title_full | Impact of land use during winter on the balance of greenhouse gases |
| title_fullStr | Impact of land use during winter on the balance of greenhouse gases |
| title_full_unstemmed | Impact of land use during winter on the balance of greenhouse gases |
| title_short | Impact of land use during winter on the balance of greenhouse gases |
| title_sort | impact of land use during winter on the balance of greenhouse gases |
| topic | Utilización de la Tierra Gases de Efecto Invernadero Barbecho Desnudo Cultivos de Invierno Dióxido de Carbono Oxido Nitroso Land Use Greenhouse Gases Bare Fallow Winter Crops Carbon Dioxide Nitrous Oxide Eddy Covariance |
| url | http://hdl.handle.net/20.500.12123/4006 https://onlinelibrary.wiley.com/doi/full/10.1111/sum.12458 https://doi.org/10.1111/sum.12458 |
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