Simplifying the Determination of Aggregate Stability Indicators of Mollisols

Aggregate stability (AS) is a very sensitive soil physical health indicator. The complexity of its determination discourages frequent monitoring. We hypothesized that a reduction of steps to determine AS would yield good AS indicators. We evaluated 196 samples from a range of Mollisols from sandy- t...

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Detalles Bibliográficos
Autores: García, Gisela Vanesa, Tourn, Santiago Néstor, Roldán, María Florencia, Mandiola, Mariana, Studdert, Guillermo Alberto
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:Argentina
Institución:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
Repositorio:CIC Digital (CICBA)
Idioma:inglés
OAI Identifier:oai:digital.cic.gba.gob.ar:11746/10991
Acceso en línea:https://digital.cic.gba.gob.ar/handle/11746/10991
Access Level:acceso abierto
Palabra clave:Agronomía, reproducción y protección de plantas
Macroaggregate mass
change of macroaggregate mass
mean weight diameter
change of mean weight diameter
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spelling Simplifying the Determination of Aggregate Stability Indicators of MollisolsGarcía, Gisela VanesaTourn, Santiago NéstorRoldán, María FlorenciaMandiola, MarianaStuddert, Guillermo AlbertoAgronomía, reproducción y protección de plantasMacroaggregate masschange of macroaggregate massmean weight diameterchange of mean weight diameterAggregate stability (AS) is a very sensitive soil physical health indicator. The complexity of its determination discourages frequent monitoring. We hypothesized that a reduction of steps to determine AS would yield good AS indicators. We evaluated 196 samples from a range of Mollisols from sandy- to clay-loam surface texture from the southeastern Buenos Aires province, Argentina. Six AS indicators were evaluated: aggregate mean weight diameter (MWD) after capillary wetting (CW) (MWDCW), MWD after sudden immersion in water (VW) (MWDVW), change of MWD (ΔMWD), remnant mass of macroaggregates (MAm) after CW (MAmCW), MAm after VW (MAmVW), and change of MAm between VW and CW (ΔMAmVW-CW). Determining ΔMWD requires six sievings, MWD requires three, ΔMAmVW-CW requires two, and MAm requires only one. Indicators after CW (MWDCW and MAmCW) were not good AS indicators. Likewise, those determined as a difference between CW and VW (ΔMWD and ΔMAmVW-CW) failed to distinguish contrasting AS situations making them unfeasible as universal AS indicators. However, MAmVW explained 99% of MWDVW variability and adequately distinguished among AS situations. With only one sieving, a good indicator of AS could be obtained, and this would encourage the adoption by soil testing laboratories and frequent soil physical health monitoring by farmers.2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/10991enginfo:eu-repo/semantics/altIdentifier/doi/10.1080/00103624.2020.1717513info:eu-repo/semantics/altIdentifier/issn/1532-2416info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2024-05-10T10:39:01Zoai:digital.cic.gba.gob.ar:11746/10991Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412024-05-10 10:39:02.121CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Simplifying the Determination of Aggregate Stability Indicators of Mollisols
title Simplifying the Determination of Aggregate Stability Indicators of Mollisols
spellingShingle Simplifying the Determination of Aggregate Stability Indicators of Mollisols
García, Gisela Vanesa
Agronomía, reproducción y protección de plantas
Macroaggregate mass
change of macroaggregate mass
mean weight diameter
change of mean weight diameter
title_short Simplifying the Determination of Aggregate Stability Indicators of Mollisols
title_full Simplifying the Determination of Aggregate Stability Indicators of Mollisols
title_fullStr Simplifying the Determination of Aggregate Stability Indicators of Mollisols
title_full_unstemmed Simplifying the Determination of Aggregate Stability Indicators of Mollisols
title_sort Simplifying the Determination of Aggregate Stability Indicators of Mollisols
dc.creator.none.fl_str_mv García, Gisela Vanesa
Tourn, Santiago Néstor
Roldán, María Florencia
Mandiola, Mariana
Studdert, Guillermo Alberto
author García, Gisela Vanesa
author_facet García, Gisela Vanesa
Tourn, Santiago Néstor
Roldán, María Florencia
Mandiola, Mariana
Studdert, Guillermo Alberto
author_role author
author2 Tourn, Santiago Néstor
Roldán, María Florencia
Mandiola, Mariana
Studdert, Guillermo Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Agronomía, reproducción y protección de plantas
Macroaggregate mass
change of macroaggregate mass
mean weight diameter
change of mean weight diameter
topic Agronomía, reproducción y protección de plantas
Macroaggregate mass
change of macroaggregate mass
mean weight diameter
change of mean weight diameter
description Aggregate stability (AS) is a very sensitive soil physical health indicator. The complexity of its determination discourages frequent monitoring. We hypothesized that a reduction of steps to determine AS would yield good AS indicators. We evaluated 196 samples from a range of Mollisols from sandy- to clay-loam surface texture from the southeastern Buenos Aires province, Argentina. Six AS indicators were evaluated: aggregate mean weight diameter (MWD) after capillary wetting (CW) (MWDCW), MWD after sudden immersion in water (VW) (MWDVW), change of MWD (ΔMWD), remnant mass of macroaggregates (MAm) after CW (MAmCW), MAm after VW (MAmVW), and change of MAm between VW and CW (ΔMAmVW-CW). Determining ΔMWD requires six sievings, MWD requires three, ΔMAmVW-CW requires two, and MAm requires only one. Indicators after CW (MWDCW and MAmCW) were not good AS indicators. Likewise, those determined as a difference between CW and VW (ΔMWD and ΔMAmVW-CW) failed to distinguish contrasting AS situations making them unfeasible as universal AS indicators. However, MAmVW explained 99% of MWDVW variability and adequately distinguished among AS situations. With only one sieving, a good indicator of AS could be obtained, and this would encourage the adoption by soil testing laboratories and frequent soil physical health monitoring by farmers.
publishDate 2020
dc.date.none.fl_str_mv 2020
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 https://digital.cic.gba.gob.ar/handle/11746/10991
url https://digital.cic.gba.gob.ar/handle/11746/10991
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/00103624.2020.1717513
info:eu-repo/semantics/altIdentifier/issn/1532-2416
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:CIC Digital (CICBA)
instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
reponame_str CIC Digital (CICBA)
collection CIC Digital (CICBA)
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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