Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean
Aims: Most studies that quantified the biological N fixation (BNF) and partial N balances of soybean have ignored the belowground structures. Our objectives were to evaluate the contribution of belowground structures to the partial N balance of soybean and to identify the origin (soil or BNF) and so...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Springer
2022
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/11699 https://link.springer.com/article/10.1007/s11104-022-05418-0 https://doi.org/10.1007/s11104-022-05418-0 |
| _version_ | 1855036621056901120 |
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| author | Kehoe, Esteban Rubio, Gerardo Salvagiotti, Fernando |
| author_browse | Kehoe, Esteban Rubio, Gerardo Salvagiotti, Fernando |
| author_facet | Kehoe, Esteban Rubio, Gerardo Salvagiotti, Fernando |
| author_sort | Kehoe, Esteban |
| collection | INTA Digital |
| description | Aims: Most studies that quantified the biological N fixation (BNF) and partial N balances of soybean have ignored the belowground structures. Our objectives were to evaluate the contribution of belowground structures to the partial N balance of soybean and to identify the origin (soil or BNF) and source (apparent remobilization or current gain during the seed-filling period) of seed N.
Methods: Biomass, BNF, and N uptake coming from different N sources and origins, including belowground structures, were quantified in a two-year field study involving two soybean genotypes (MG IV and V) and two water availability conditions (rainfed and irrigated).
Results: The inclusion of BNF-derived N present in belowground components (which averaged +12 kg N ha−1 at R7) changed the results of the partial N balances from negative to positive. BNF was the main origin of seed N, accounting for 73 and 79% of seed N under water stressed and non-stressed conditions, respectively. Regarding the seed N source, apparent remobilization was the main contributor to seed N under water stress, whereas current N gain was the main contributor to seed N in unstressed plants.
Conclusions: We conclude that i) the root system retains a relevant proportion of the atmospheric N fixed during the crop cycle and should be included in the partial N balance estimations; and ii) BNF is the main origin of seed N, even under contrasting growing conditions. |
| format | info:ar-repo/semantics/artículo |
| id | INTA11699 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA116992022-04-21T13:17:30Z Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean Kehoe, Esteban Rubio, Gerardo Salvagiotti, Fernando Soja Nitrógeno Biomasa sobre el Suelo Biomasa por debajo del Suelo Fijación Biológica del Nitrógeno Soybeans Nitrogen Above Ground Biomass Below Ground Biomass Biological Nitrogen Fixation Aims: Most studies that quantified the biological N fixation (BNF) and partial N balances of soybean have ignored the belowground structures. Our objectives were to evaluate the contribution of belowground structures to the partial N balance of soybean and to identify the origin (soil or BNF) and source (apparent remobilization or current gain during the seed-filling period) of seed N. Methods: Biomass, BNF, and N uptake coming from different N sources and origins, including belowground structures, were quantified in a two-year field study involving two soybean genotypes (MG IV and V) and two water availability conditions (rainfed and irrigated). Results: The inclusion of BNF-derived N present in belowground components (which averaged +12 kg N ha−1 at R7) changed the results of the partial N balances from negative to positive. BNF was the main origin of seed N, accounting for 73 and 79% of seed N under water stressed and non-stressed conditions, respectively. Regarding the seed N source, apparent remobilization was the main contributor to seed N under water stress, whereas current N gain was the main contributor to seed N in unstressed plants. Conclusions: We conclude that i) the root system retains a relevant proportion of the atmospheric N fixed during the crop cycle and should be included in the partial N balance estimations; and ii) BNF is the main origin of seed N, even under contrasting growing conditions. EEA Oliveros Fil: Kehoe, Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentina Fil: Kehoe, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rubio, Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina Fil: Rubio, Gerardo. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina Fil: Rubio, Gerardo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad de Suelos y Fertilización; Argentina Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentina Fil: Salvagiotti, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2022-04-21T13:14:01Z 2022-04-21T13:14:01Z 2022-04 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/11699 https://link.springer.com/article/10.1007/s11104-022-05418-0 0032-079X 1573-5036 https://doi.org/10.1007/s11104-022-05418-0 eng info:eu-repograntAgreement/INTA/PNCYO-1127033/AR./Manejo nutricional de cereales y oleaginosas para la intensificación sustentable de los sistemas productivos info:eu-repograntAgreement/INTA/2019-PE-E1-I011-001/2019-PE-E1-I011-001/AR./Intensificacion Sustentable de la Agricultura en la Region Pampeana info:eu-repo/semantics/restrictedAccess application/pdf Springer Plant and Soil (Published: 15 April 2022) |
| spellingShingle | Soja Nitrógeno Biomasa sobre el Suelo Biomasa por debajo del Suelo Fijación Biológica del Nitrógeno Soybeans Nitrogen Above Ground Biomass Below Ground Biomass Biological Nitrogen Fixation Kehoe, Esteban Rubio, Gerardo Salvagiotti, Fernando Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title_full | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title_fullStr | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title_full_unstemmed | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title_short | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean |
| title_sort | contribution of different sources and origins of nitrogen in above and below ground structures to the partial nitrogen balance in soybean |
| topic | Soja Nitrógeno Biomasa sobre el Suelo Biomasa por debajo del Suelo Fijación Biológica del Nitrógeno Soybeans Nitrogen Above Ground Biomass Below Ground Biomass Biological Nitrogen Fixation |
| url | http://hdl.handle.net/20.500.12123/11699 https://link.springer.com/article/10.1007/s11104-022-05418-0 https://doi.org/10.1007/s11104-022-05418-0 |
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