Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis

Autores
Alvarez, Roberto; Steinbach, Haydee Sara; de Paepe, Josefina
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cover crops are a valuable management option for reducing soil erosion and nitrogen losses from agroecosystems. They improve soil quality but the impacts on crop yield depend on the type of cover crop, the commercial crop considered and the climate. In the Argentine Pampas the introduction of cover crops in rotations is being extensively studied by official institutions. We performed a meta-analysis with results of 67 local field experiments in which winter cover crop effects on soils and crops were analyzed. Soil physical properties improved after cover crops. Bulk density was minimally affected, structural stability and water infiltration increased, while soil penetration resistance decreased. Soil organic carbon content of the 0–20 cm layer rose ca. 4% in fine-textured soils and 9% in coarser ones. Nitrate-N decreased after cover crops by 30% regardless if the cover crop species was or was not legume. Soil available water at crop sowing was not affected by cover crops in the upper meter of the profile but when the cumulative water content was measured at depth (ca. 2 m) it decreased by around 20%. Soybean (Glycine max) yield was barely affected by the previous cover crop or fallow treatment. Conversely, corn (Zea mays) yield tended to decrease when the cover crop was a non-legume (- 8%) or significantly increased after legume species (+7%) when compared to a fallow. In the Pampas, cover crops have multifunctional benefits and their adoption will depend on the balance between these benefits, the sowing cost and some possible negative effects on corn yield. For this latter crop, legume cover crops are recommended.
Fil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Steinbach, Haydee Sara. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: de Paepe, Josefina. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Cover Crops
Meta-Analysis
Pampean Region
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/55762
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Cover crop effects on soils and subsequent crops in the pampas: A meta-analysisAlvarez, RobertoSteinbach, Haydee Sarade Paepe, JosefinaCover CropsMeta-AnalysisPampean Regionhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Cover crops are a valuable management option for reducing soil erosion and nitrogen losses from agroecosystems. They improve soil quality but the impacts on crop yield depend on the type of cover crop, the commercial crop considered and the climate. In the Argentine Pampas the introduction of cover crops in rotations is being extensively studied by official institutions. We performed a meta-analysis with results of 67 local field experiments in which winter cover crop effects on soils and crops were analyzed. Soil physical properties improved after cover crops. Bulk density was minimally affected, structural stability and water infiltration increased, while soil penetration resistance decreased. Soil organic carbon content of the 0–20 cm layer rose ca. 4% in fine-textured soils and 9% in coarser ones. Nitrate-N decreased after cover crops by 30% regardless if the cover crop species was or was not legume. Soil available water at crop sowing was not affected by cover crops in the upper meter of the profile but when the cumulative water content was measured at depth (ca. 2 m) it decreased by around 20%. Soybean (Glycine max) yield was barely affected by the previous cover crop or fallow treatment. Conversely, corn (Zea mays) yield tended to decrease when the cover crop was a non-legume (- 8%) or significantly increased after legume species (+7%) when compared to a fallow. In the Pampas, cover crops have multifunctional benefits and their adoption will depend on the balance between these benefits, the sowing cost and some possible negative effects on corn yield. For this latter crop, legume cover crops are recommended.Fil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Steinbach, Haydee Sara. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: de Paepe, Josefina. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55762Alvarez, Roberto; Steinbach, Haydee Sara; de Paepe, Josefina; Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis; Elsevier Science; Soil & Tillage Research; 170; 7-2017; 53-650167-1987CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.still.2017.03.005info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167198717300594info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-26T08:45:18Zoai:ri.conicet.gov.ar:11336/55762instacron: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:34982025-11-26 08:45:18.546CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
title Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
spellingShingle Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
Alvarez, Roberto
Cover Crops
Meta-Analysis
Pampean Region
title_short Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
title_full Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
title_fullStr Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
title_full_unstemmed Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
title_sort Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis
dc.creator.none.fl_str_mv Alvarez, Roberto
Steinbach, Haydee Sara
de Paepe, Josefina
author Alvarez, Roberto
author_facet Alvarez, Roberto
Steinbach, Haydee Sara
de Paepe, Josefina
author_role author
author2 Steinbach, Haydee Sara
de Paepe, Josefina
author2_role author
author
dc.subject.none.fl_str_mv Cover Crops
Meta-Analysis
Pampean Region
topic Cover Crops
Meta-Analysis
Pampean Region
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Cover crops are a valuable management option for reducing soil erosion and nitrogen losses from agroecosystems. They improve soil quality but the impacts on crop yield depend on the type of cover crop, the commercial crop considered and the climate. In the Argentine Pampas the introduction of cover crops in rotations is being extensively studied by official institutions. We performed a meta-analysis with results of 67 local field experiments in which winter cover crop effects on soils and crops were analyzed. Soil physical properties improved after cover crops. Bulk density was minimally affected, structural stability and water infiltration increased, while soil penetration resistance decreased. Soil organic carbon content of the 0–20 cm layer rose ca. 4% in fine-textured soils and 9% in coarser ones. Nitrate-N decreased after cover crops by 30% regardless if the cover crop species was or was not legume. Soil available water at crop sowing was not affected by cover crops in the upper meter of the profile but when the cumulative water content was measured at depth (ca. 2 m) it decreased by around 20%. Soybean (Glycine max) yield was barely affected by the previous cover crop or fallow treatment. Conversely, corn (Zea mays) yield tended to decrease when the cover crop was a non-legume (- 8%) or significantly increased after legume species (+7%) when compared to a fallow. In the Pampas, cover crops have multifunctional benefits and their adoption will depend on the balance between these benefits, the sowing cost and some possible negative effects on corn yield. For this latter crop, legume cover crops are recommended.
Fil: Alvarez, Roberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Steinbach, Haydee Sara. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: de Paepe, Josefina. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Cover crops are a valuable management option for reducing soil erosion and nitrogen losses from agroecosystems. They improve soil quality but the impacts on crop yield depend on the type of cover crop, the commercial crop considered and the climate. In the Argentine Pampas the introduction of cover crops in rotations is being extensively studied by official institutions. We performed a meta-analysis with results of 67 local field experiments in which winter cover crop effects on soils and crops were analyzed. Soil physical properties improved after cover crops. Bulk density was minimally affected, structural stability and water infiltration increased, while soil penetration resistance decreased. Soil organic carbon content of the 0–20 cm layer rose ca. 4% in fine-textured soils and 9% in coarser ones. Nitrate-N decreased after cover crops by 30% regardless if the cover crop species was or was not legume. Soil available water at crop sowing was not affected by cover crops in the upper meter of the profile but when the cumulative water content was measured at depth (ca. 2 m) it decreased by around 20%. Soybean (Glycine max) yield was barely affected by the previous cover crop or fallow treatment. Conversely, corn (Zea mays) yield tended to decrease when the cover crop was a non-legume (- 8%) or significantly increased after legume species (+7%) when compared to a fallow. In the Pampas, cover crops have multifunctional benefits and their adoption will depend on the balance between these benefits, the sowing cost and some possible negative effects on corn yield. For this latter crop, legume cover crops are recommended.
publishDate 2017
dc.date.none.fl_str_mv 2017-07
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/11336/55762
Alvarez, Roberto; Steinbach, Haydee Sara; de Paepe, Josefina; Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis; Elsevier Science; Soil & Tillage Research; 170; 7-2017; 53-65
0167-1987
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55762
identifier_str_mv Alvarez, Roberto; Steinbach, Haydee Sara; de Paepe, Josefina; Cover crop effects on soils and subsequent crops in the pampas: A meta-analysis; Elsevier Science; Soil & Tillage Research; 170; 7-2017; 53-65
0167-1987
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.still.2017.03.005
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167198717300594
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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score 13.011256

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