Soil shrinkage curves and micromorphology in contrasting managements.
Compaction processes are generally described using methods that do not distinguish volume changes of diffe rent types and pore sizes. The adjustment of shrinkage curves (ShC) using the XP model allows elucidation of the effects of soil management on changes in pore volume. This method coupled with m...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Asociación Argentina de la Ciencia del Suelo
2023
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| Online Access: | http://hdl.handle.net/20.500.12123/15717 https://ojs.suelos.org.ar/index.php/cds/article/view/526 |
| _version_ | 1855037360385818624 |
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| author | Fernández, Patricia L. Alvarez, Carina Rosa Behrends Kraemer, Filipe Morras, Hector Scheiner, Javier Boivin, Pascal Taboada, Miguel Angel |
| author_browse | Alvarez, Carina Rosa Behrends Kraemer, Filipe Boivin, Pascal Fernández, Patricia L. Morras, Hector Scheiner, Javier Taboada, Miguel Angel |
| author_facet | Fernández, Patricia L. Alvarez, Carina Rosa Behrends Kraemer, Filipe Morras, Hector Scheiner, Javier Boivin, Pascal Taboada, Miguel Angel |
| author_sort | Fernández, Patricia L. |
| collection | INTA Digital |
| description | Compaction processes are generally described using methods that do not distinguish volume changes of diffe rent types and pore sizes. The adjustment of shrinkage curves (ShC) using the XP model allows elucidation of the effects of soil management on changes in pore volume. This method coupled with micromorphological and micromorphometric determinations in soil thin sections allows the characterization and quantification of impor tant soil features included pore types. The aim of this work was to examine the potential of shrinkage analysis to describe soil physical degradation under the most common management (continuous cropping-CC), an alternative management (integrated crop/livestock-ICL), related to quasi-pristine (QP); in two soils of northern of the Pampean
region of Argentina (Typic Hapludoll and Typic Argiudoll). We focused on the changes of soil structural porosity in both methods (ShC and micromorphological analyses) in silty soils with low shrinkage-swelling capacity. The QP had a higher volume (or lower bulk density) in both soils. The slope of the structural phase was QP<ICL<CC, indicating lower structural stability, as a consequence of macropore destruction due to management intensity. Micromorphological analyses were in concordance to shrinkage analysis. QP showed higher structural pores from shrinkage analyses; and from micromorphometric analyses: higher Pores>50 um, a good pore orientation (vertical angles), and crumb microstructure derived from an intense biological activity were observed. In Typic Hapludoll,
structural porosity in CC and ICL presented similar values according to ShC determinations. In Typic Argiudoll CC it was presented a lower values of structural porosity than in ICL. Similar results were estimated from micromor phological analyses (Pores>50 µm = QP(20.0%)>ICL(17.7%)>CC(16.0%)). CC and ICL were characterized by the development of platy peds and horizontally oriented planes, whereas ICL presented more biological activity. ShC and micromorphology analyses improved the understanding of soil functioning in these non-expansive soils, allowing the comparison between cattle trampling and continuous cropping in different soil types. |
| format | info:ar-repo/semantics/artículo |
| id | INTA15717 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Asociación Argentina de la Ciencia del Suelo |
| publisherStr | Asociación Argentina de la Ciencia del Suelo |
| record_format | dspace |
| spelling | INTA157172023-10-27T13:36:58Z Soil shrinkage curves and micromorphology in contrasting managements. Fernández, Patricia L. Alvarez, Carina Rosa Behrends Kraemer, Filipe Morras, Hector Scheiner, Javier Boivin, Pascal Taboada, Miguel Angel Compaction Soil Porosity Compactación Porosidad del Suelo XP Model Thin Section Modelo XP Corte Delgado Compaction processes are generally described using methods that do not distinguish volume changes of diffe rent types and pore sizes. The adjustment of shrinkage curves (ShC) using the XP model allows elucidation of the effects of soil management on changes in pore volume. This method coupled with micromorphological and micromorphometric determinations in soil thin sections allows the characterization and quantification of impor tant soil features included pore types. The aim of this work was to examine the potential of shrinkage analysis to describe soil physical degradation under the most common management (continuous cropping-CC), an alternative management (integrated crop/livestock-ICL), related to quasi-pristine (QP); in two soils of northern of the Pampean region of Argentina (Typic Hapludoll and Typic Argiudoll). We focused on the changes of soil structural porosity in both methods (ShC and micromorphological analyses) in silty soils with low shrinkage-swelling capacity. The QP had a higher volume (or lower bulk density) in both soils. The slope of the structural phase was QP<ICL<CC, indicating lower structural stability, as a consequence of macropore destruction due to management intensity. Micromorphological analyses were in concordance to shrinkage analysis. QP showed higher structural pores from shrinkage analyses; and from micromorphometric analyses: higher Pores>50 um, a good pore orientation (vertical angles), and crumb microstructure derived from an intense biological activity were observed. In Typic Hapludoll, structural porosity in CC and ICL presented similar values according to ShC determinations. In Typic Argiudoll CC it was presented a lower values of structural porosity than in ICL. Similar results were estimated from micromor phological analyses (Pores>50 µm = QP(20.0%)>ICL(17.7%)>CC(16.0%)). CC and ICL were characterized by the development of platy peds and horizontally oriented planes, whereas ICL presented more biological activity. ShC and micromorphology analyses improved the understanding of soil functioning in these non-expansive soils, allowing the comparison between cattle trampling and continuous cropping in different soil types. El proceso de compactación en general es descripto usando métodos que no distinguen tipos y tamaños de poros que son afectados. El ajuste de las curvas de contracción (CC) usando el modelo XP permite diferenciar los manejos de suelos con relación a la porosidad. Este método está en consonancia con las determinaciones micromorfológicas y micromorfométricas de cortes delgados. El objetivo de este trabajo fue examinar el potencial del análisis de las CC de los suelos para describir la degradación física de los mismos bajo distintos manejos de la región pampeana de la Argentina: agricultura continua (AC), rotación agrícola-ganadera (AG), respecto de una situación cuasi-prístina (CP), en dos suelos: Hapludol Típico y Argiudol Típico. Desde dos aproximaciones de análisis de CC y análisis micromorfológico en suelos limosos de baja capacidad de expansión/contracción. El tratamiento CP presentó el volumen más alto (menor densidad aparente) para los dos suelos. Las pendientes de la fase estructural presentaron el siguiente orden: CP<AG<AC, mayor valor más destrucción de macroporos. El análisis micromorfológico estuvo en concordancia con el análisis de contracción. CP presentó los mayores valores de porosidad estructural hallándose por análisis micromorfológico poros >50um, buena orientación, y una microestructura migajosa derivada de la intensa actividad biológica. En el Hapludol Típico, la porosi dad estructural fue similar en AC y en AG. En el Argiudol Típico, AG presentó valores mayores de porosidad estructural respecto de AC. Similares tendencias fueron halladas en los cortes delgados (Poros>50 µm = (20.0%)>GA(17.7%)>AC(16.0%)). AC and AG se caracterizaron por el desarrollo de estructuras laminares con poros orientados horizontalmente, sin embargo, GA presentó una mayor actividad biológica. La comple mentación de las CC y el análisis micromorfológico mejoró el entendimiento del funcionamiento de suelos no expandibles, permitiendo la comparación entre manejos agrícolas continuos y aquellos con pisoteo animal en diferentes tipos de suelo. Fil: Fernández, Patricia. Universidad de Buenos Aires, Facultad de Agronomía, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía; Argentina Fil: Behrends Kraemer, Filipe. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Conservación y Manejo de Suelos; Argentina Fil: Morras, Héctor J.M. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina Fil: Scheiner, Javier D. Université de Toulouse; Francia Fil: Boivin, Pascal. Haute école du paysage d’ingénierie et d’architecture de Géneve; Suiza Fil: Taboada, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2023-10-27T13:27:34Z 2023-10-27T13:27:34Z 2020-06-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/15717 https://ojs.suelos.org.ar/index.php/cds/article/view/526 1850-2067 eng info:eu-repo/semantics/openAccess 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 Asociación Argentina de la Ciencia del Suelo Ciencia del Suelo (Argentina) 38 (1) : 29-44. (2020) |
| spellingShingle | Compaction Soil Porosity Compactación Porosidad del Suelo XP Model Thin Section Modelo XP Corte Delgado Fernández, Patricia L. Alvarez, Carina Rosa Behrends Kraemer, Filipe Morras, Hector Scheiner, Javier Boivin, Pascal Taboada, Miguel Angel Soil shrinkage curves and micromorphology in contrasting managements. |
| title | Soil shrinkage curves and micromorphology in contrasting managements. |
| title_full | Soil shrinkage curves and micromorphology in contrasting managements. |
| title_fullStr | Soil shrinkage curves and micromorphology in contrasting managements. |
| title_full_unstemmed | Soil shrinkage curves and micromorphology in contrasting managements. |
| title_short | Soil shrinkage curves and micromorphology in contrasting managements. |
| title_sort | soil shrinkage curves and micromorphology in contrasting managements |
| topic | Compaction Soil Porosity Compactación Porosidad del Suelo XP Model Thin Section Modelo XP Corte Delgado |
| url | http://hdl.handle.net/20.500.12123/15717 https://ojs.suelos.org.ar/index.php/cds/article/view/526 |
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