Topsoil hardening: effects on soybean root architecture and water extraction patterns
Topsoil hardening is one of the major causes of poor root growth although its effects on subsoil roots are still not well-known. Our aim was to examine the effects of topsoil hardening on the growth and functioning of shallow and deep roots of soybean plants. Two rain shelter experiments were conduc...
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| Format: | Artículo |
| Language: | Inglés |
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Springer
2024
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| Online Access: | http://hdl.handle.net/20.500.12123/17741 https://link.springer.com/article/10.1007/s42729-020-00286-y https://doi.org/10.1007/s42729-020-00286-y |
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| author | Peralta, Guillermo Ezequiel Taboada, Miguel Angel Kantolic, Adriana G. Rubio, Gerardo Daniel |
| author_browse | Kantolic, Adriana G. Peralta, Guillermo Ezequiel Rubio, Gerardo Daniel Taboada, Miguel Angel |
| author_facet | Peralta, Guillermo Ezequiel Taboada, Miguel Angel Kantolic, Adriana G. Rubio, Gerardo Daniel |
| author_sort | Peralta, Guillermo Ezequiel |
| collection | INTA Digital |
| description | Topsoil hardening is one of the major causes of poor root growth although its effects on subsoil roots are still not well-known. Our aim was to examine the effects of topsoil hardening on the growth and functioning of shallow and deep roots of soybean plants. Two rain shelter experiments were conducted in two consecutive years. Plants were grown in topsoil monoliths (0–20 cm) with low (LR) or high mechanical resistance (HR), extracted from adjacent no-tillage cropping fields, and placed above 180 cm-high containers filled with a sandy loam soil. The effects of topsoil hardening were largely regulated by the level of water stress. In stressed plants, HR conditions reduced total aboveground biomass (up to 13%), total root biomass, root length density, and root surface area (up to 23, 38, and 37% respectively). Mechanical impedances reduced root biomass and length in both shallow (0–20 cm) and very deep layers (+ 160 cm). No changes were observed in specific root length or specific surface area. Plants growing in HR topsoils showed lower total water extraction but greater specific water uptake rates (29–47% higher in year 1 and 2 respectively). No clear architectural (i.e., root density) or morphological (i.e., specific root length/area) responses of enhanced root foraging capacity were observed in subsoil roots. However, soybean root system responded through functional mechanisms (i.e., specific water uptake) which partially attenuated the negative effects of mechanical impedances. |
| format | Artículo |
| id | INTA17741 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA177412024-05-15T12:44:14Z Topsoil hardening: effects on soybean root architecture and water extraction patterns Peralta, Guillermo Ezequiel Taboada, Miguel Angel Kantolic, Adriana G. Rubio, Gerardo Daniel Soil Chemicophysical Properties Water Uptake Zero Tillage Soybeans Propiedades Físico-químicas Suelo Absorción de Agua Cero-labranza Soja Soil Physical Degradation Soil Mechanical Impedance Degradación Física del Suelo impedancia Mecánica del Suelo Topsoil hardening is one of the major causes of poor root growth although its effects on subsoil roots are still not well-known. Our aim was to examine the effects of topsoil hardening on the growth and functioning of shallow and deep roots of soybean plants. Two rain shelter experiments were conducted in two consecutive years. Plants were grown in topsoil monoliths (0–20 cm) with low (LR) or high mechanical resistance (HR), extracted from adjacent no-tillage cropping fields, and placed above 180 cm-high containers filled with a sandy loam soil. The effects of topsoil hardening were largely regulated by the level of water stress. In stressed plants, HR conditions reduced total aboveground biomass (up to 13%), total root biomass, root length density, and root surface area (up to 23, 38, and 37% respectively). Mechanical impedances reduced root biomass and length in both shallow (0–20 cm) and very deep layers (+ 160 cm). No changes were observed in specific root length or specific surface area. Plants growing in HR topsoils showed lower total water extraction but greater specific water uptake rates (29–47% higher in year 1 and 2 respectively). No clear architectural (i.e., root density) or morphological (i.e., specific root length/area) responses of enhanced root foraging capacity were observed in subsoil roots. However, soybean root system responded through functional mechanisms (i.e., specific water uptake) which partially attenuated the negative effects of mechanical impedances. Instituto de Suelos Fil: Peralta, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Taboada, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina Fil: Kantolic, Adriana. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Cultivos de Oleaginosas; Argentina Fil: Rubio, Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. INBA (CONICET-UBA); Argentina 2024-05-15T12:20:56Z 2024-05-15T12:20:56Z 2020-09-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/17741 https://link.springer.com/article/10.1007/s42729-020-00286-y 2019-2024 https://doi.org/10.1007/s42729-020-00286-y eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer Journal of Soil Science and Plant Nutrition 20 (4) : 2182-2194 (September 2020) |
| spellingShingle | Soil Chemicophysical Properties Water Uptake Zero Tillage Soybeans Propiedades Físico-químicas Suelo Absorción de Agua Cero-labranza Soja Soil Physical Degradation Soil Mechanical Impedance Degradación Física del Suelo impedancia Mecánica del Suelo Peralta, Guillermo Ezequiel Taboada, Miguel Angel Kantolic, Adriana G. Rubio, Gerardo Daniel Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title | Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title_full | Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title_fullStr | Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title_full_unstemmed | Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title_short | Topsoil hardening: effects on soybean root architecture and water extraction patterns |
| title_sort | topsoil hardening effects on soybean root architecture and water extraction patterns |
| topic | Soil Chemicophysical Properties Water Uptake Zero Tillage Soybeans Propiedades Físico-químicas Suelo Absorción de Agua Cero-labranza Soja Soil Physical Degradation Soil Mechanical Impedance Degradación Física del Suelo impedancia Mecánica del Suelo |
| url | http://hdl.handle.net/20.500.12123/17741 https://link.springer.com/article/10.1007/s42729-020-00286-y https://doi.org/10.1007/s42729-020-00286-y |
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