Anisotropy of pore size classes’ connectivity related to soil structure under no tillage

Autores
Lozano, Luis Alberto; Soracco, Carlos Germán; Cornelis, Wim M.; Gabriels, Donald; Sarli, Guillermo Oliverio; Villarreal, Rafael
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
No-tillage (NT) systems have been increasing during the last several decades. Development of a near-surface layer of laminar structure under NT has also been reported. The objectives of this work were to determine whether preferential connectivity of different pore size classes in two differently textured soils under NT exists and to propose a new index of pore connectivity based on water flux (Cw). The study was carried out at two sites in the Pampas Region of Argentina under long-term NT. Site 1 had a loamy A-horizon, and Site 2 had a sandy loam A-horizon. Undisturbed samples were extracted in vertical and horizontal directions within the first 8 cm of the soil. Saturated hydraulic conductivity (K s), near-saturated hydraulic conductivity (h: −50, −100, −200, −300, and −500 cm), pore size distribution from water retention curve, and total porosity were determined. The index of pore connectivity based on water flux, Cw, was developed as a ratio between K and pore volume for each pore size class. Site 1 showed laminar structure in the A-horizon, whereas Site 2 showed a blocky structure. We found a preferential connectivity in horizontal direction of macropores in Site 1. The index of pore connectivity was useful to assess the presence of preferential orientation of different pore size classes. In future studies, the connectivity of the different pore size classes should not be neglected.
Fil: Lozano, Luis Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soracco, Carlos Germán. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cornelis, Wim M.. Ghent University; Bélgica
Fil: Gabriels, Donald. Ghent University; Bélgica
Fil: Sarli, Guillermo Oliverio. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Villarreal, Rafael. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Direct Drilling
Pore Connectivity
Pore Anisotropy
Hydraulic Conductivity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/23678
Acceder
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spelling Anisotropy of pore size classes’ connectivity related to soil structure under no tillageLozano, Luis AlbertoSoracco, Carlos GermánCornelis, Wim M.Gabriels, DonaldSarli, Guillermo OliverioVillarreal, RafaelDirect DrillingPore ConnectivityPore AnisotropyHydraulic ConductivityNo-tillage (NT) systems have been increasing during the last several decades. Development of a near-surface layer of laminar structure under NT has also been reported. The objectives of this work were to determine whether preferential connectivity of different pore size classes in two differently textured soils under NT exists and to propose a new index of pore connectivity based on water flux (Cw). The study was carried out at two sites in the Pampas Region of Argentina under long-term NT. Site 1 had a loamy A-horizon, and Site 2 had a sandy loam A-horizon. Undisturbed samples were extracted in vertical and horizontal directions within the first 8 cm of the soil. Saturated hydraulic conductivity (K s), near-saturated hydraulic conductivity (h: −50, −100, −200, −300, and −500 cm), pore size distribution from water retention curve, and total porosity were determined. The index of pore connectivity based on water flux, Cw, was developed as a ratio between K and pore volume for each pore size class. Site 1 showed laminar structure in the A-horizon, whereas Site 2 showed a blocky structure. We found a preferential connectivity in horizontal direction of macropores in Site 1. The index of pore connectivity was useful to assess the presence of preferential orientation of different pore size classes. In future studies, the connectivity of the different pore size classes should not be neglected.Fil: Lozano, Luis Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Soracco, Carlos Germán. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cornelis, Wim M.. Ghent University; BélgicaFil: Gabriels, Donald. Ghent University; BélgicaFil: Sarli, Guillermo Oliverio. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Villarreal, Rafael. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaLippincott Williams2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23678Lozano, Luis Alberto; Soracco, Carlos Germán; Cornelis, Wim M.; Gabriels, Donald; Sarli, Guillermo Oliverio; et al.; Anisotropy of pore size classes’ connectivity related to soil structure under no tillage; Lippincott Williams; Soil Science; 178; 11; 11-2013; 612-6170038-075XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://journals.lww.com/soilsci/pages/articleviewer.aspx?year=2013&issue=11000&article=00003&type=abstractinfo:eu-repo/semantics/altIdentifier/doi/ 10.1097/SS.0000000000000027info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:05Zoai:ri.conicet.gov.ar:11336/23678instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:50:06.313CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
title Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
spellingShingle Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
Lozano, Luis Alberto
Direct Drilling
Pore Connectivity
Pore Anisotropy
Hydraulic Conductivity
title_short Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
title_full Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
title_fullStr Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
title_full_unstemmed Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
title_sort Anisotropy of pore size classes’ connectivity related to soil structure under no tillage
dc.creator.none.fl_str_mv Lozano, Luis Alberto
Soracco, Carlos Germán
Cornelis, Wim M.
Gabriels, Donald
Sarli, Guillermo Oliverio
Villarreal, Rafael
author Lozano, Luis Alberto
author_facet Lozano, Luis Alberto
Soracco, Carlos Germán
Cornelis, Wim M.
Gabriels, Donald
Sarli, Guillermo Oliverio
Villarreal, Rafael
author_role author
author2 Soracco, Carlos Germán
Cornelis, Wim M.
Gabriels, Donald
Sarli, Guillermo Oliverio
Villarreal, Rafael
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Direct Drilling
Pore Connectivity
Pore Anisotropy
Hydraulic Conductivity
topic Direct Drilling
Pore Connectivity
Pore Anisotropy
Hydraulic Conductivity
dc.description.none.fl_txt_mv No-tillage (NT) systems have been increasing during the last several decades. Development of a near-surface layer of laminar structure under NT has also been reported. The objectives of this work were to determine whether preferential connectivity of different pore size classes in two differently textured soils under NT exists and to propose a new index of pore connectivity based on water flux (Cw). The study was carried out at two sites in the Pampas Region of Argentina under long-term NT. Site 1 had a loamy A-horizon, and Site 2 had a sandy loam A-horizon. Undisturbed samples were extracted in vertical and horizontal directions within the first 8 cm of the soil. Saturated hydraulic conductivity (K s), near-saturated hydraulic conductivity (h: −50, −100, −200, −300, and −500 cm), pore size distribution from water retention curve, and total porosity were determined. The index of pore connectivity based on water flux, Cw, was developed as a ratio between K and pore volume for each pore size class. Site 1 showed laminar structure in the A-horizon, whereas Site 2 showed a blocky structure. We found a preferential connectivity in horizontal direction of macropores in Site 1. The index of pore connectivity was useful to assess the presence of preferential orientation of different pore size classes. In future studies, the connectivity of the different pore size classes should not be neglected.
Fil: Lozano, Luis Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soracco, Carlos Germán. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cornelis, Wim M.. Ghent University; Bélgica
Fil: Gabriels, Donald. Ghent University; Bélgica
Fil: Sarli, Guillermo Oliverio. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Villarreal, Rafael. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description No-tillage (NT) systems have been increasing during the last several decades. Development of a near-surface layer of laminar structure under NT has also been reported. The objectives of this work were to determine whether preferential connectivity of different pore size classes in two differently textured soils under NT exists and to propose a new index of pore connectivity based on water flux (Cw). The study was carried out at two sites in the Pampas Region of Argentina under long-term NT. Site 1 had a loamy A-horizon, and Site 2 had a sandy loam A-horizon. Undisturbed samples were extracted in vertical and horizontal directions within the first 8 cm of the soil. Saturated hydraulic conductivity (K s), near-saturated hydraulic conductivity (h: −50, −100, −200, −300, and −500 cm), pore size distribution from water retention curve, and total porosity were determined. The index of pore connectivity based on water flux, Cw, was developed as a ratio between K and pore volume for each pore size class. Site 1 showed laminar structure in the A-horizon, whereas Site 2 showed a blocky structure. We found a preferential connectivity in horizontal direction of macropores in Site 1. The index of pore connectivity was useful to assess the presence of preferential orientation of different pore size classes. In future studies, the connectivity of the different pore size classes should not be neglected.
publishDate 2013
dc.date.none.fl_str_mv 2013-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/23678
Lozano, Luis Alberto; Soracco, Carlos Germán; Cornelis, Wim M.; Gabriels, Donald; Sarli, Guillermo Oliverio; et al.; Anisotropy of pore size classes’ connectivity related to soil structure under no tillage; Lippincott Williams; Soil Science; 178; 11; 11-2013; 612-617
0038-075X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23678
identifier_str_mv Lozano, Luis Alberto; Soracco, Carlos Germán; Cornelis, Wim M.; Gabriels, Donald; Sarli, Guillermo Oliverio; et al.; Anisotropy of pore size classes’ connectivity related to soil structure under no tillage; Lippincott Williams; Soil Science; 178; 11; 11-2013; 612-617
0038-075X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.lww.com/soilsci/pages/articleviewer.aspx?year=2013&issue=11000&article=00003&type=abstract
info:eu-repo/semantics/altIdentifier/doi/ 10.1097/SS.0000000000000027
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Lippincott Williams
publisher.none.fl_str_mv Lippincott Williams
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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