Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium
Soybean (Glycine max (L.) Merrill) new cultivars have high N demands to sustain increasing grain yields. One may ask whether these cultivars would need basal and/or topdressing N application as perhaps symbiotic N2 fixation would not catch up with the increased N needs. In this study, three field ex...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/3681 https://www.sciencedirect.com/science/article/pii/S0378429016301630?via%3Dihub https://doi.org/10.1016/j.fcr.2016.05.010 |
| _version_ | 1855483283195822080 |
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| author | Kaschuka, Glaciela Nogueira, Marco Antonio De Luca, Marcos Javier Hungria, Mariangela |
| author_browse | De Luca, Marcos Javier Hungria, Mariangela Kaschuka, Glaciela Nogueira, Marco Antonio |
| author_facet | Kaschuka, Glaciela Nogueira, Marco Antonio De Luca, Marcos Javier Hungria, Mariangela |
| author_sort | Kaschuka, Glaciela |
| collection | INTA Digital |
| description | Soybean (Glycine max (L.) Merrill) new cultivars have high N demands to sustain increasing grain yields. One may ask whether these cultivars would need basal and/or topdressing N application as perhaps symbiotic N2 fixation would not catch up with the increased N needs. In this study, three field experiments were performed in three different ecoregions of Brazil to compare soybean with determinate (BRS-294-RR and BRS-295-RR) and indeterminate (Vmax-RR, BMX-Potência-RR and BRS 284) growth types. The experiments consisted of four treatments, all inoculated with efficient Bradyrhizobium strains, but with differences in N fertilizer (as urea) application: (T1) control without N fertilizer; (T2) basal application of 30 kg N ha−1 at sowing; (T3) topdressing of 50 kg N ha−1 at full flowering; (T4) 30 kg N ha−1 and 50 kg N ha−1 as basal and topdressing, respectively. None of the basal or topdressing treatments improved biomass production or grain yield. However, N fertilizer negatively affected nodule number and dry weight, pointing out a down-regulation in the symbiotic performance, without improving crop yields. Similar results were observed in cultivars of both growth types, indicating that biological nitrogen fixation can supply N needs of new soybean genotypes of both growth types. |
| format | Artículo |
| id | INTA3681 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA36812019-07-18T11:51:07Z Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium Kaschuka, Glaciela Nogueira, Marco Antonio De Luca, Marcos Javier Hungria, Mariangela Soja Glycine Max Abonos Nitrogenados Bradyrhizobium Variedades Fijación del Nitrógeno Simbiosis Nitrogen Metabolism Metabolismo del Nitrógeno Soybeans Nitrogen Fertilizers Varieties Nitrogen Fixation Symbiosis Brasil Fertilización Nitrogenada Soybean (Glycine max (L.) Merrill) new cultivars have high N demands to sustain increasing grain yields. One may ask whether these cultivars would need basal and/or topdressing N application as perhaps symbiotic N2 fixation would not catch up with the increased N needs. In this study, three field experiments were performed in three different ecoregions of Brazil to compare soybean with determinate (BRS-294-RR and BRS-295-RR) and indeterminate (Vmax-RR, BMX-Potência-RR and BRS 284) growth types. The experiments consisted of four treatments, all inoculated with efficient Bradyrhizobium strains, but with differences in N fertilizer (as urea) application: (T1) control without N fertilizer; (T2) basal application of 30 kg N ha−1 at sowing; (T3) topdressing of 50 kg N ha−1 at full flowering; (T4) 30 kg N ha−1 and 50 kg N ha−1 as basal and topdressing, respectively. None of the basal or topdressing treatments improved biomass production or grain yield. However, N fertilizer negatively affected nodule number and dry weight, pointing out a down-regulation in the symbiotic performance, without improving crop yields. Similar results were observed in cultivars of both growth types, indicating that biological nitrogen fixation can supply N needs of new soybean genotypes of both growth types. Instituto de Fisiología y Recursos Genéticos Vegetales Fil: Kaschuka, Glaciela. Universidade Federal do Paraná. Departamento de Solos e Engenharia Agrícola; Brasil Fil: Nogueira, Marco Antonio. Embrapa Soja; Brasil Fil: De Luca, Marcos Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina. Universidade Estadual de Londrina. Departamento Microbiologia; Brasil Fil: Hungria, Mariangela. Embrapa Soja; Brasil 2018-10-23T16:54:56Z 2018-10-23T16:54:56Z 2016-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3681 https://www.sciencedirect.com/science/article/pii/S0378429016301630?via%3Dihub 0378-4290 https://doi.org/10.1016/j.fcr.2016.05.010 eng info:eu-repo/semantics/restrictedAccess application/pdf Brazil (nation) Elsevier Field crops research 195 : 21-27. (15 August 2016) |
| spellingShingle | Soja Glycine Max Abonos Nitrogenados Bradyrhizobium Variedades Fijación del Nitrógeno Simbiosis Nitrogen Metabolism Metabolismo del Nitrógeno Soybeans Nitrogen Fertilizers Varieties Nitrogen Fixation Symbiosis Brasil Fertilización Nitrogenada Kaschuka, Glaciela Nogueira, Marco Antonio De Luca, Marcos Javier Hungria, Mariangela Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title | Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title_full | Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title_fullStr | Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title_full_unstemmed | Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title_short | Response of determinate and indeterminate soybean cultivars to basal and topdressing N fertilization compared to sole inoculation with Bradyrhizobium |
| title_sort | response of determinate and indeterminate soybean cultivars to basal and topdressing n fertilization compared to sole inoculation with bradyrhizobium |
| topic | Soja Glycine Max Abonos Nitrogenados Bradyrhizobium Variedades Fijación del Nitrógeno Simbiosis Nitrogen Metabolism Metabolismo del Nitrógeno Soybeans Nitrogen Fertilizers Varieties Nitrogen Fixation Symbiosis Brasil Fertilización Nitrogenada |
| url | http://hdl.handle.net/20.500.12123/3681 https://www.sciencedirect.com/science/article/pii/S0378429016301630?via%3Dihub https://doi.org/10.1016/j.fcr.2016.05.010 |
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