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The United States (USA) and Argentina (ARG) account for over 50% of the global soybean [Glycine max (L.) Merr.] production. Soybean N demand is partially met (50–60%) by the biological nitrogen fixation (BNF) process; however, an unanswered scientific knowledge gap exists on the ability of the BNF process to fulfill soybean N demand at varying yield levels. The overall objective of this study is to explore the potential N limitation using different N
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dc.contributor.author | Ortez, O.A. | |
dc.contributor.author | Salvagiotti, Fernando | |
dc.contributor.author | Enrico, Juan Martin | |
dc.contributor.author | Prasad, P.V.V. | |
dc.contributor.author | Armstrong, P. | |
dc.contributor.author | Ciampitti, Ignacio A. | |
dc.date.accessioned | 2019-07-10T13:44:06Z | |
dc.date.available | 2019-07-10T13:44:06Z | |
dc.date.issued | 2018-10 | |
dc.identifier.issn | 0002-1962 | |
dc.identifier.issn | 1435-0645 | |
dc.identifier.other | https://doi.org/10.2134/agronj2018.04.0271 | |
dc.identifier.uri | https://dl.sciencesocieties.org/publications/aj/abstracts/110/5/2080 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/5461 | |
dc.description.abstract | The United States (USA) and Argentina (ARG) account for over 50% of the global soybean [Glycine max (L.) Merr.] production. Soybean N demand is partially met (50–60%) by the biological nitrogen fixation (BNF) process; however, an unanswered scientific knowledge gap exists on the ability of the BNF process to fulfill soybean N demand at varying yield levels. The overall objective of this study is to explore the potential N limitation using different N strategies for historical and modern soybean genotypes. Four field experiments were conducted during 2016 and 2017 growing seasons in Kansas (USA) and Santa Fe (ARG). Twenty-one historical and modern soybean genotypes released from the 1980s to 2010s were tested under three N treatments: (i) control, without N application (Zero-N); (ii) 56 kg N ha–1 applied at R3-R4 growth stages (Late-N); and (iii) 670 kg ha–1 equally split at planting, R1, and R3–R4 growth stages (Full-N). Historical soybean yield gains, from the 1980s to 2010s, were 29% in the USA and 21% in ARG. Following the yield trend, seed N content increased for modern genotypes in parallel to the reduction on seed protein concentration. Regarding N treatments, Full-N produced 12% yield increase in the USA and 4% in ARG. Yield improvement was mainly related to increases in aboveground biomass, seed number (genotype effect), and to a lesser extent, to seed weight (N effect). This study suggests a potential N limitation for soybean, although there are still questions about the way in which N must be provided to the plant. | 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 (5) : 2080-2090 (2018) | es_AR |
dc.subject | Soja | es_AR |
dc.subject | Soybeans | eng |
dc.subject | Genotipos | es_AR |
dc.subject | Genotypes | 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.title | Exploring nitrogen limitation for historical and modern soybean genotypes | 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: Ortez, O.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.description.fil | Fil: Enrico, Juan Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros. Departamento de Agronomía; Argentina | es_AR |
dc.description.fil | Fil: Prasad, P.V.V. Kansas State University. Department of Agronomy; Estados Unidos. USDA-ARS. Center for Grain and Animal Health Research; Estados Unidos | es_AR |
dc.description.fil | Fil: Armstrong, P. USDA-ARS. Center for Grain and Animal Health Research; Estados Unidos | es_AR |
dc.description.fil | Fil: Ciampitti, Ignacio A. Kansas State University. Department of Agronomy; Estados Unidos | es_AR |
dc.subtype | cientifico |
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