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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
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dc.contributor.author | Kehoe, Esteban | |
dc.contributor.author | Rubio, Gerardo | |
dc.contributor.author | Salvagiotti, Fernando | |
dc.date.accessioned | 2022-04-21T13:14:01Z | |
dc.date.available | 2022-04-21T13:14:01Z | |
dc.date.issued | 2022-04 | |
dc.identifier.issn | 0032-079X | |
dc.identifier.issn | 1573-5036 | |
dc.identifier.other | https://doi.org/10.1007/s11104-022-05418-0 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/11699 | |
dc.identifier.uri | https://link.springer.com/article/10.1007/s11104-022-05418-0 | |
dc.description.abstract | 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. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | Springer | es_AR |
dc.relation | info:eu-repograntAgreement/INTA/PNCYO-1127033/AR./Manejo nutricional de cereales y oleaginosas para la intensificación sustentable de los sistemas productivos | es_AR |
dc.relation | info:eu-repograntAgreement/INTA/2019-PE-E1-I011-001/2019-PE-E1-I011-001/AR./Intensificacion Sustentable de la Agricultura en la Region Pampeana | es_AR |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_AR |
dc.source | Plant and Soil (Published: 15 April 2022) | es_AR |
dc.subject | Soja | es_AR |
dc.subject | Soybeans | eng |
dc.subject | Nitrógeno | es_AR |
dc.subject | Nitrogen | eng |
dc.subject | Biomasa sobre el Suelo | es_AR |
dc.subject | Above Ground Biomass | eng |
dc.subject | Biomasa por debajo del Suelo | es_AR |
dc.subject | Below Ground Biomass | eng |
dc.subject | Fijación Biológica del Nitrógeno | es_AR |
dc.subject | Biological Nitrogen Fixation | eng |
dc.title | Contribution of different sources and origins of nitrogen in above- and below-ground structures to the partial nitrogen balance in soybean | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/publishedVersion | es_AR |
dc.description.origen | EEA Oliveros | es_AR |
dc.description.fil | Fil: Kehoe, Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentina | es_AR |
dc.description.fil | Fil: Kehoe, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | 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 | es_AR |
dc.description.fil | Fil: Rubio, Gerardo. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina | es_AR |
dc.description.fil | Fil: Rubio, Gerardo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad de Suelos y Fertilización; Argentina | es_AR |
dc.description.fil | Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentina | es_AR |
dc.description.fil | Fil: Salvagiotti, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.subtype | cientifico |
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