Soybean nitrogen sources and demand during the seed-filling period
Soybean [Glycine max (L.) Merr.] seed N demand not met by biological N fixation is fulfilled by N remobilization from vegetative plant organs and N uptake from soil sources during the seed-filling period (SFP), herein termed N gain. The objectives of this study were to: (i) quantify the contribution...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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American Society of Agronomy
2019
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| Materias: | |
| Acceso en línea: | https://dl.sciencesocieties.org/publications/aj/abstracts/0/0/agronj2018.10.0656 http://hdl.handle.net/20.500.12123/5460 https://doi.org/10.2134/agronj2018.10.0656 |
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| author | Ortez, O.A. Tamagno, S. Salvagiotti, Fernando Prasad, P.V.V. Ciampitti, Ignacio A. |
| author_browse | Ciampitti, Ignacio A. Ortez, O.A. Prasad, P.V.V. Salvagiotti, Fernando Tamagno, S. |
| author_facet | Ortez, O.A. Tamagno, S. Salvagiotti, Fernando Prasad, P.V.V. Ciampitti, Ignacio A. |
| author_sort | Ortez, O.A. |
| collection | INTA Digital |
| description | Soybean [Glycine max (L.) Merr.] seed N demand not met by biological N fixation is fulfilled by N remobilization from vegetative plant organs and N uptake from soil sources during the seed-filling period (SFP), herein termed N gain. The objectives of this study were to: (i) quantify the contribution of plant organs to N remobilization during the SFP, (ii) determine the association between N gain and N remobilization, and (iii) study the effect of seed yield in both N gain and N remobilization processes. Three field experiments were conducted in 2015 and 2016 in Kansas. Three soybean genotypes: (i) non-Roundup Ready (RR), released in 1997; (ii) RR-1, released in 2009; and (iii) RR-2, released in 2014 were tested under three N rates: (i) control without N application (zero-N); (ii) 56 kg N ha–1 applied at R3 stage (late N); and (iii) 670 kg N ha–1 (full N; three applications of 223 kg N ha–1) applied at planting, R1, and R3 stages. The late-N and full-N rates increased yields by 9% (256 kg ha–1) relative to the zero N. Neither genotypes nor N rates affected N gain nor N remobilization. Nitrogen remobilization accounted for 59% of seed N demand at maturity, mainly driven by biomass at R5.5, with the leaf organ as the main contributor (52%) of the total remobilized N. Nitrogen remobilization was negatively related to N gain, and increases in N gain were linked to increases in biomass and yield. |
| format | Artículo |
| id | INTA5460 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | American Society of Agronomy |
| publisherStr | American Society of Agronomy |
| record_format | dspace |
| spelling | INTA54602019-07-10T13:25:57Z Soybean nitrogen sources and demand during the seed-filling period Ortez, O.A. Tamagno, S. Salvagiotti, Fernando Prasad, P.V.V. Ciampitti, Ignacio A. Soja Nitrógeno Hinchamiento de la Semilla Fijación Biológica del Nitrógeno Soybeans Nitrogen Seed Filling Biological Nitrogen Fixation Soybean [Glycine max (L.) Merr.] seed N demand not met by biological N fixation is fulfilled by N remobilization from vegetative plant organs and N uptake from soil sources during the seed-filling period (SFP), herein termed N gain. The objectives of this study were to: (i) quantify the contribution of plant organs to N remobilization during the SFP, (ii) determine the association between N gain and N remobilization, and (iii) study the effect of seed yield in both N gain and N remobilization processes. Three field experiments were conducted in 2015 and 2016 in Kansas. Three soybean genotypes: (i) non-Roundup Ready (RR), released in 1997; (ii) RR-1, released in 2009; and (iii) RR-2, released in 2014 were tested under three N rates: (i) control without N application (zero-N); (ii) 56 kg N ha–1 applied at R3 stage (late N); and (iii) 670 kg N ha–1 (full N; three applications of 223 kg N ha–1) applied at planting, R1, and R3 stages. The late-N and full-N rates increased yields by 9% (256 kg ha–1) relative to the zero N. Neither genotypes nor N rates affected N gain nor N remobilization. Nitrogen remobilization accounted for 59% of seed N demand at maturity, mainly driven by biomass at R5.5, with the leaf organ as the main contributor (52%) of the total remobilized N. Nitrogen remobilization was negatively related to N gain, and increases in N gain were linked to increases in biomass and yield. EEA Oliveros Fil: Ortez, O.A. University of Nebraska-Lincoln. Department of Agronomy and Horticulture; Estados Unidos Fil: Tamagno, S. Kansas State University. Department of Agronomy; Estados Unidos Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros. Departamento de Agronomía; Argentina Fil: Prasad, P.V.V. Kansas State University. Department of Agronomy. Kansas State University. Sustainable Intensification Innovation Lab.; Estados Unidos Fil: Ciampitti, Ignacio A. Kansas State University. Department of Agronomy; Estados Unidos 2019-07-10T13:14:22Z 2019-07-10T13:14:22Z 2019-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://dl.sciencesocieties.org/publications/aj/abstracts/0/0/agronj2018.10.0656 http://hdl.handle.net/20.500.12123/5460 0002-1962 1435-0645 https://doi.org/10.2134/agronj2018.10.0656 eng info:eu-repo/semantics/restrictedAccess application/pdf American Society of Agronomy Agronomy Journal Disponible mayo 2019 |
| spellingShingle | Soja Nitrógeno Hinchamiento de la Semilla Fijación Biológica del Nitrógeno Soybeans Nitrogen Seed Filling Biological Nitrogen Fixation Ortez, O.A. Tamagno, S. Salvagiotti, Fernando Prasad, P.V.V. Ciampitti, Ignacio A. Soybean nitrogen sources and demand during the seed-filling period |
| title | Soybean nitrogen sources and demand during the seed-filling period |
| title_full | Soybean nitrogen sources and demand during the seed-filling period |
| title_fullStr | Soybean nitrogen sources and demand during the seed-filling period |
| title_full_unstemmed | Soybean nitrogen sources and demand during the seed-filling period |
| title_short | Soybean nitrogen sources and demand during the seed-filling period |
| title_sort | soybean nitrogen sources and demand during the seed filling period |
| topic | Soja Nitrógeno Hinchamiento de la Semilla Fijación Biológica del Nitrógeno Soybeans Nitrogen Seed Filling Biological Nitrogen Fixation |
| url | https://dl.sciencesocieties.org/publications/aj/abstracts/0/0/agronj2018.10.0656 http://hdl.handle.net/20.500.12123/5460 https://doi.org/10.2134/agronj2018.10.0656 |
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