Use of a three-compartment model to evaluate the dynamics of cover crop residues

Autores
de Sa Pereira, Eduardo; Galantini, Juan Alberto; Duval, Matias Ezequiel
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Cover crop (CC) residues protect the soil from erosion and their permanence on the surface islargely influenced by theirbiochemicalconstituents. Simulation models have been proposed to evaluate the decomposition of residues in soil. Most of these models have taken in to a ccountone or several compartments to describe the organic residues, each decomposing according to first or de rkinetics. In this study, the dynamics of CC residue decomposition by applying mathematical models was described. The kinetics of decomposition of residues was obtained from a laboratory incubation experiment. Three CC shoot residues were applied on the soil surface and incubated for 362 days (withe ight sampling times). Total 72 samples (pots) were placed at random in a green house unde controlled conditions of temperature (25 ± 1°C). The basic treatment design consisted of pots in which CC residue (24 pots for each specie), oven-dried, was covered. The residues of oats, vetch and clover cutinto 2–3-cm particles and were added to pots at 5.4, 5.4 and 2.7 g dry matter, respectively, which corresponded to biomass rates of 6, 6 and 3 Mg ha−1, respectively. This rate is equivalent to that observed in field experimental plots. There sults from the application of the three-compartment model (LIG, C + H and NSC, with their decomposition rate constants) for simulating decomposition of different CC residues showed a better fit witht he real data than the estimation from the negative exponential equation. Oats and vetch residues decomposed the most than clover, where k values were 3.6 × 10−3,3.7 × 10−3 and 5.3 × 10−3 day−1, respectively. The three compartment model (non structural carbohydrates, cellulose–hemicellulose and lignin) to simúlate residue decomposition presented a close fit between simulated and measured data. The decomposition rate constant (k) of CC can be used to estímate how long residues willre main in thefield and how they could affect soil organic carbon.Vetch residues initially showed a fast decomposition rate. They lost over 40% in the first 21 day safter being placed in incubation pots, which allow edhigh N-availability in the soil. Oats residues decomposed more slowly and caused temporary N-immobilization in thesoil, with a late partial release between 3 and 4 months after the residues were placed in the pots. Decomposition rates foroats, vetch and clover residues were different, where as the processes of mineralization and immobilization were enhanced by the C:N ratio of each CC. The decomposition dynamics of the CC can be described by a simple equation in the médium term, or else a three compartment model can be used for more accurate descriptions in the short term.
Fil: de Sa Pereira, Eduardo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; Argentina
Fil: Galantini, Juan Alberto. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Duval, Matias Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Global Conference on Plant Science and Molecular Biology
Valencia
España
Magnus Group
Materia
RESIDUE DECOMPOSITION
OAT
VETCH
CLOVER
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:11336/264940

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network_name_str CONICET Digital (CONICET)
spelling Use of a three-compartment model to evaluate the dynamics of cover crop residuesde Sa Pereira, EduardoGalantini, Juan AlbertoDuval, Matias EzequielRESIDUE DECOMPOSITIONOATVETCHCLOVERhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Cover crop (CC) residues protect the soil from erosion and their permanence on the surface islargely influenced by theirbiochemicalconstituents. Simulation models have been proposed to evaluate the decomposition of residues in soil. Most of these models have taken in to a ccountone or several compartments to describe the organic residues, each decomposing according to first or de rkinetics. In this study, the dynamics of CC residue decomposition by applying mathematical models was described. The kinetics of decomposition of residues was obtained from a laboratory incubation experiment. Three CC shoot residues were applied on the soil surface and incubated for 362 days (withe ight sampling times). Total 72 samples (pots) were placed at random in a green house unde controlled conditions of temperature (25 ± 1°C). The basic treatment design consisted of pots in which CC residue (24 pots for each specie), oven-dried, was covered. The residues of oats, vetch and clover cutinto 2–3-cm particles and were added to pots at 5.4, 5.4 and 2.7 g dry matter, respectively, which corresponded to biomass rates of 6, 6 and 3 Mg ha−1, respectively. This rate is equivalent to that observed in field experimental plots. There sults from the application of the three-compartment model (LIG, C + H and NSC, with their decomposition rate constants) for simulating decomposition of different CC residues showed a better fit witht he real data than the estimation from the negative exponential equation. Oats and vetch residues decomposed the most than clover, where k values were 3.6 × 10−3,3.7 × 10−3 and 5.3 × 10−3 day−1, respectively. The three compartment model (non structural carbohydrates, cellulose–hemicellulose and lignin) to simúlate residue decomposition presented a close fit between simulated and measured data. The decomposition rate constant (k) of CC can be used to estímate how long residues willre main in thefield and how they could affect soil organic carbon.Vetch residues initially showed a fast decomposition rate. They lost over 40% in the first 21 day safter being placed in incubation pots, which allow edhigh N-availability in the soil. Oats residues decomposed more slowly and caused temporary N-immobilization in thesoil, with a late partial release between 3 and 4 months after the residues were placed in the pots. Decomposition rates foroats, vetch and clover residues were different, where as the processes of mineralization and immobilization were enhanced by the C:N ratio of each CC. The decomposition dynamics of the CC can be described by a simple equation in the médium term, or else a three compartment model can be used for more accurate descriptions in the short term.Fil: de Sa Pereira, Eduardo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; ArgentinaFil: Galantini, Juan Alberto. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Duval, Matias Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaGlobal Conference on Plant Science and Molecular BiologyValenciaEspañaMagnus GroupMagnus Group2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectConferenciaJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/264940Use of a three-compartment model to evaluate the dynamics of cover crop residues; Global Conference on Plant Science and Molecular Biology; Valencia; España; 2017; 208-209CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://plant-science-biology-conferences.magnusgroup.org/uploads/pdfs/gpmb-2017-abstract-book.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:33Zoai:ri.conicet.gov.ar:11336/264940instacron: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:34982025-09-29 10:16:34.148CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Use of a three-compartment model to evaluate the dynamics of cover crop residues
title Use of a three-compartment model to evaluate the dynamics of cover crop residues
spellingShingle Use of a three-compartment model to evaluate the dynamics of cover crop residues
de Sa Pereira, Eduardo
RESIDUE DECOMPOSITION
OAT
VETCH
CLOVER
title_short Use of a three-compartment model to evaluate the dynamics of cover crop residues
title_full Use of a three-compartment model to evaluate the dynamics of cover crop residues
title_fullStr Use of a three-compartment model to evaluate the dynamics of cover crop residues
title_full_unstemmed Use of a three-compartment model to evaluate the dynamics of cover crop residues
title_sort Use of a three-compartment model to evaluate the dynamics of cover crop residues
dc.creator.none.fl_str_mv de Sa Pereira, Eduardo
Galantini, Juan Alberto
Duval, Matias Ezequiel
author de Sa Pereira, Eduardo
author_facet de Sa Pereira, Eduardo
Galantini, Juan Alberto
Duval, Matias Ezequiel
author_role author
author2 Galantini, Juan Alberto
Duval, Matias Ezequiel
author2_role author
author
dc.subject.none.fl_str_mv RESIDUE DECOMPOSITION
OAT
VETCH
CLOVER
topic RESIDUE DECOMPOSITION
OAT
VETCH
CLOVER
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Cover crop (CC) residues protect the soil from erosion and their permanence on the surface islargely influenced by theirbiochemicalconstituents. Simulation models have been proposed to evaluate the decomposition of residues in soil. Most of these models have taken in to a ccountone or several compartments to describe the organic residues, each decomposing according to first or de rkinetics. In this study, the dynamics of CC residue decomposition by applying mathematical models was described. The kinetics of decomposition of residues was obtained from a laboratory incubation experiment. Three CC shoot residues were applied on the soil surface and incubated for 362 days (withe ight sampling times). Total 72 samples (pots) were placed at random in a green house unde controlled conditions of temperature (25 ± 1°C). The basic treatment design consisted of pots in which CC residue (24 pots for each specie), oven-dried, was covered. The residues of oats, vetch and clover cutinto 2–3-cm particles and were added to pots at 5.4, 5.4 and 2.7 g dry matter, respectively, which corresponded to biomass rates of 6, 6 and 3 Mg ha−1, respectively. This rate is equivalent to that observed in field experimental plots. There sults from the application of the three-compartment model (LIG, C + H and NSC, with their decomposition rate constants) for simulating decomposition of different CC residues showed a better fit witht he real data than the estimation from the negative exponential equation. Oats and vetch residues decomposed the most than clover, where k values were 3.6 × 10−3,3.7 × 10−3 and 5.3 × 10−3 day−1, respectively. The three compartment model (non structural carbohydrates, cellulose–hemicellulose and lignin) to simúlate residue decomposition presented a close fit between simulated and measured data. The decomposition rate constant (k) of CC can be used to estímate how long residues willre main in thefield and how they could affect soil organic carbon.Vetch residues initially showed a fast decomposition rate. They lost over 40% in the first 21 day safter being placed in incubation pots, which allow edhigh N-availability in the soil. Oats residues decomposed more slowly and caused temporary N-immobilization in thesoil, with a late partial release between 3 and 4 months after the residues were placed in the pots. Decomposition rates foroats, vetch and clover residues were different, where as the processes of mineralization and immobilization were enhanced by the C:N ratio of each CC. The decomposition dynamics of the CC can be described by a simple equation in the médium term, or else a three compartment model can be used for more accurate descriptions in the short term.
Fil: de Sa Pereira, Eduardo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; Argentina
Fil: Galantini, Juan Alberto. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Duval, Matias Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Global Conference on Plant Science and Molecular Biology
Valencia
España
Magnus Group
description Cover crop (CC) residues protect the soil from erosion and their permanence on the surface islargely influenced by theirbiochemicalconstituents. Simulation models have been proposed to evaluate the decomposition of residues in soil. Most of these models have taken in to a ccountone or several compartments to describe the organic residues, each decomposing according to first or de rkinetics. In this study, the dynamics of CC residue decomposition by applying mathematical models was described. The kinetics of decomposition of residues was obtained from a laboratory incubation experiment. Three CC shoot residues were applied on the soil surface and incubated for 362 days (withe ight sampling times). Total 72 samples (pots) were placed at random in a green house unde controlled conditions of temperature (25 ± 1°C). The basic treatment design consisted of pots in which CC residue (24 pots for each specie), oven-dried, was covered. The residues of oats, vetch and clover cutinto 2–3-cm particles and were added to pots at 5.4, 5.4 and 2.7 g dry matter, respectively, which corresponded to biomass rates of 6, 6 and 3 Mg ha−1, respectively. This rate is equivalent to that observed in field experimental plots. There sults from the application of the three-compartment model (LIG, C + H and NSC, with their decomposition rate constants) for simulating decomposition of different CC residues showed a better fit witht he real data than the estimation from the negative exponential equation. Oats and vetch residues decomposed the most than clover, where k values were 3.6 × 10−3,3.7 × 10−3 and 5.3 × 10−3 day−1, respectively. The three compartment model (non structural carbohydrates, cellulose–hemicellulose and lignin) to simúlate residue decomposition presented a close fit between simulated and measured data. The decomposition rate constant (k) of CC can be used to estímate how long residues willre main in thefield and how they could affect soil organic carbon.Vetch residues initially showed a fast decomposition rate. They lost over 40% in the first 21 day safter being placed in incubation pots, which allow edhigh N-availability in the soil. Oats residues decomposed more slowly and caused temporary N-immobilization in thesoil, with a late partial release between 3 and 4 months after the residues were placed in the pots. Decomposition rates foroats, vetch and clover residues were different, where as the processes of mineralization and immobilization were enhanced by the C:N ratio of each CC. The decomposition dynamics of the CC can be described by a simple equation in the médium term, or else a three compartment model can be used for more accurate descriptions in the short term.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
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http://purl.org/coar/resource_type/c_5794
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status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/264940
Use of a three-compartment model to evaluate the dynamics of cover crop residues; Global Conference on Plant Science and Molecular Biology; Valencia; España; 2017; 208-209
CONICET Digital
CONICET
url http://hdl.handle.net/11336/264940
identifier_str_mv Use of a three-compartment model to evaluate the dynamics of cover crop residues; Global Conference on Plant Science and Molecular Biology; Valencia; España; 2017; 208-209
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://plant-science-biology-conferences.magnusgroup.org/uploads/pdfs/gpmb-2017-abstract-book.pdf
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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