Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level
- Autores
- Wingeyer, Ana Beatriz
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- tesis doctoral
- Estado
- versión publicada
- Colaborador/a o director/a de tesis
- Drijbe, Rhae
Olk, Daniel - Descripción
- Tesis para obtener el grado de Doctor of Philosophy, Major: Agronomy, de la University of Nebraska, en 2011
This dissertation explores changes over time in soil organic matter (SOM) stabilization of two irrigated production fields: a continuous maize sequence that was converted from no-till to conservation deep tillage (Site 1), and a no-till maize-soybean rotation (Site 2). An integrated approach using humic acid extractions and density-based physical fractionation of SOM within aggregate size classes was developed to evaluate the changes in SOM stabilization (physical protection, organo-mineral associations and humification). At Site 1, loss of SOM in the surface layer was compensated for by increased SOM in deeper soil layers with no net change in C stocks. Whole field C-stocks in the 0-400 kg soil m-2 layer of Site 1 were 7.09 ± 0.29, 7.47 ± 0.36, 7.15 ± 0.37 and 7.18 ± 0.41 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. This outcome is encouraging, given the challenge of stabilizing aboveground residues into the mineral matrix without increasing tillage-induced C losses from native SOM and residues due to enhanced decomposition. At Site 2, there was an increase in C and N stocks in surface soil after the second maize year (2007). Whole field C stocks in the 0-400 kg soil m-2 layer of Site 2 were 6.42 ± 0.30, 6.18 ± 0.32, 6.81 ± 0.26 and 6.72 ± 0.29 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. The changes in soil 13C signature and monosaccharide composition, together with changes in SOM fraction amount support a large input of soybean residues as key to promote stabilization of standing maize litter through physical protection and humification. Preferential SOM accumulation in the largest, most C-enriched aggregates was associated with less humified SOM fractions while similar accumulation rates of more humified fractions were found among aggregate classes. These findings support stabilization of crop residues as SOM under high yield maize and soybean management at field scale.
EEA Paraná
Fil: Wingeyer, Ana Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina - Materia
-
Materia Orgánica del Suelo
Cultivos
Manejo del Cultivo
Residuos
Explotaciones Agrarias
Soil Organic Matter
Crops
Crop Management
Residues
Farms - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/5745
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Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm LevelWingeyer, Ana BeatrizMateria Orgánica del SueloCultivosManejo del CultivoResiduosExplotaciones AgrariasSoil Organic MatterCropsCrop ManagementResiduesFarmsTesis para obtener el grado de Doctor of Philosophy, Major: Agronomy, de la University of Nebraska, en 2011This dissertation explores changes over time in soil organic matter (SOM) stabilization of two irrigated production fields: a continuous maize sequence that was converted from no-till to conservation deep tillage (Site 1), and a no-till maize-soybean rotation (Site 2). An integrated approach using humic acid extractions and density-based physical fractionation of SOM within aggregate size classes was developed to evaluate the changes in SOM stabilization (physical protection, organo-mineral associations and humification). At Site 1, loss of SOM in the surface layer was compensated for by increased SOM in deeper soil layers with no net change in C stocks. Whole field C-stocks in the 0-400 kg soil m-2 layer of Site 1 were 7.09 ± 0.29, 7.47 ± 0.36, 7.15 ± 0.37 and 7.18 ± 0.41 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. This outcome is encouraging, given the challenge of stabilizing aboveground residues into the mineral matrix without increasing tillage-induced C losses from native SOM and residues due to enhanced decomposition. At Site 2, there was an increase in C and N stocks in surface soil after the second maize year (2007). Whole field C stocks in the 0-400 kg soil m-2 layer of Site 2 were 6.42 ± 0.30, 6.18 ± 0.32, 6.81 ± 0.26 and 6.72 ± 0.29 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. The changes in soil 13C signature and monosaccharide composition, together with changes in SOM fraction amount support a large input of soybean residues as key to promote stabilization of standing maize litter through physical protection and humification. Preferential SOM accumulation in the largest, most C-enriched aggregates was associated with less humified SOM fractions while similar accumulation rates of more humified fractions were found among aggregate classes. These findings support stabilization of crop residues as SOM under high yield maize and soybean management at field scale.EEA ParanáFil: Wingeyer, Ana Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; ArgentinaUniversity of NebraskaDrijbe, RhaeOlk, Daniel2019-09-02T12:52:38Z2019-09-02T12:52:38Z2011info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_db06info:ar-repo/semantics/tesisDoctoralapplication/pdfhttp://hdl.handle.net/20.500.12123/5745https://digitalcommons.unl.edu/agronhortdiss/43/enginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuaria2025-09-29T13:44:44Zoai:localhost:20.500.12123/5745instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:45.215INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
dc.title.none.fl_str_mv |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
title |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
spellingShingle |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level Wingeyer, Ana Beatriz Materia Orgánica del Suelo Cultivos Manejo del Cultivo Residuos Explotaciones Agrarias Soil Organic Matter Crops Crop Management Residues Farms |
title_short |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
title_full |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
title_fullStr |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
title_full_unstemmed |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
title_sort |
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level |
dc.creator.none.fl_str_mv |
Wingeyer, Ana Beatriz |
author |
Wingeyer, Ana Beatriz |
author_facet |
Wingeyer, Ana Beatriz |
author_role |
author |
dc.contributor.none.fl_str_mv |
Drijbe, Rhae Olk, Daniel |
dc.subject.none.fl_str_mv |
Materia Orgánica del Suelo Cultivos Manejo del Cultivo Residuos Explotaciones Agrarias Soil Organic Matter Crops Crop Management Residues Farms |
topic |
Materia Orgánica del Suelo Cultivos Manejo del Cultivo Residuos Explotaciones Agrarias Soil Organic Matter Crops Crop Management Residues Farms |
dc.description.none.fl_txt_mv |
Tesis para obtener el grado de Doctor of Philosophy, Major: Agronomy, de la University of Nebraska, en 2011 This dissertation explores changes over time in soil organic matter (SOM) stabilization of two irrigated production fields: a continuous maize sequence that was converted from no-till to conservation deep tillage (Site 1), and a no-till maize-soybean rotation (Site 2). An integrated approach using humic acid extractions and density-based physical fractionation of SOM within aggregate size classes was developed to evaluate the changes in SOM stabilization (physical protection, organo-mineral associations and humification). At Site 1, loss of SOM in the surface layer was compensated for by increased SOM in deeper soil layers with no net change in C stocks. Whole field C-stocks in the 0-400 kg soil m-2 layer of Site 1 were 7.09 ± 0.29, 7.47 ± 0.36, 7.15 ± 0.37 and 7.18 ± 0.41 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. This outcome is encouraging, given the challenge of stabilizing aboveground residues into the mineral matrix without increasing tillage-induced C losses from native SOM and residues due to enhanced decomposition. At Site 2, there was an increase in C and N stocks in surface soil after the second maize year (2007). Whole field C stocks in the 0-400 kg soil m-2 layer of Site 2 were 6.42 ± 0.30, 6.18 ± 0.32, 6.81 ± 0.26 and 6.72 ± 0.29 kg C m-2 in fall of 2005, 2006, 2007 and 2008, respectively. The changes in soil 13C signature and monosaccharide composition, together with changes in SOM fraction amount support a large input of soybean residues as key to promote stabilization of standing maize litter through physical protection and humification. Preferential SOM accumulation in the largest, most C-enriched aggregates was associated with less humified SOM fractions while similar accumulation rates of more humified fractions were found among aggregate classes. These findings support stabilization of crop residues as SOM under high yield maize and soybean management at field scale. EEA Paraná Fil: Wingeyer, Ana Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina |
description |
Tesis para obtener el grado de Doctor of Philosophy, Major: Agronomy, de la University of Nebraska, en 2011 |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011 2019-09-02T12:52:38Z 2019-09-02T12:52:38Z |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_db06 info:ar-repo/semantics/tesisDoctoral |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12123/5745 https://digitalcommons.unl.edu/agronhortdiss/43/ |
url |
http://hdl.handle.net/20.500.12123/5745 https://digitalcommons.unl.edu/agronhortdiss/43/ |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
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) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
University of Nebraska |
publisher.none.fl_str_mv |
University of Nebraska |
dc.source.none.fl_str_mv |
reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
reponame_str |
INTA Digital (INTA) |
collection |
INTA Digital (INTA) |
instname_str |
Instituto Nacional de Tecnología Agropecuaria |
repository.name.fl_str_mv |
INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
repository.mail.fl_str_mv |
tripaldi.nicolas@inta.gob.ar |
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12.559606 |