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Soybean biological N2 fixation (BNF) relationships with fertilizer N and yield response have been comprehensively reviewed in the scientific literature. However, the study of the N-gap between N uptake and N supplied by N2 fixation, and the partial N balance (fixed N in aboveground biomass – N seeds) needs further investigation. Therefore, the goals of this synthesis–analysis were to (i) quantify seed production per unit of fixed N under different amounts
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dc.contributor.author | Ciampitti, Ignacio A. | |
dc.contributor.author | Salvagiotti, Fernando | |
dc.date.accessioned | 2019-07-11T11:55:48Z | |
dc.date.available | 2019-07-11T11:55:48Z | |
dc.date.issued | 2018-08 | |
dc.identifier.issn | 0002-1962 | |
dc.identifier.issn | 1435-0645 | |
dc.identifier.other | https://doi.org/10.2134/agronj2017.06.0348 | |
dc.identifier.uri | https://dl.sciencesocieties.org/publications/aj/abstracts/110/4/1185 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/5473 | |
dc.description.abstract | Soybean biological N2 fixation (BNF) relationships with fertilizer N and yield response have been comprehensively reviewed in the scientific literature. However, the study of the N-gap between N uptake and N supplied by N2 fixation, and the partial N balance (fixed N in aboveground biomass – N seeds) needs further investigation. Therefore, the goals of this synthesis–analysis were to (i) quantify seed production per unit of fixed N under different amounts of N derived from the atmosphere (NDFA, %), (ii) study the N-gap and explore limitations of N2 fixation (kg ha–1) for satisfying plant N demand, and (iii) calculate a partial N balance for soybean and determine its relationship with the N2 fixation process. Data was gathered from 1955 through 2016 using studies reporting BNF, seed yield, and plant N uptake (n = 733 data points). The main outcomes of this review were (i) as NDFA increased, seed production per N2 fixation decreased (from 0.033 to 0.017 Mg yield kg–1 N from low, 28%, to high, 80%, NDFA); (ii) N-gap increased faster when NDFA values were above 80% and after plant N content was above 370 kg N ha–1 suggesting that the crop needs additional N for coping yield potential; and (iii) when excluding roots, the partial N balance calculation revealed negative values across all NDFA levels. Future studies should consider a holistic approach to quantify the contribution of BNF in overall N cycling, including N contribution from roots, and to better understand the soil × plant × rhizobia interactions. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | American Society of Agronomy | es_AR |
dc.rights | info:eu-repo/semantics/openAccess | es_AR |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
dc.source | Agronomy Journal 110 (4) : 1185-1196 (2018) | es_AR |
dc.subject | Soja | es_AR |
dc.subject | Soybeans | eng |
dc.subject | Nitrógeno | es_AR |
dc.subject | Nitrogen | eng |
dc.subject | Fijación Biológica del Nitrógeno | es_AR |
dc.subject | Biological Nitrogen Fixation | eng |
dc.subject | Rendimiento | es_AR |
dc.subject | Yields | eng |
dc.title | New insights into soybean biological nitrogen fixation | 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.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
dc.description.origen | EEA Oliveros | es_AR |
dc.description.fil | Fil: Ciampitti, Ignacio A. Kansas State University. Department of Agronomy; Estados Unidos | es_AR |
dc.description.fil | Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros. Departamento de Agronomía; Argentina | es_AR |
dc.subtype | cientifico |
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