Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino
- Autores
- Alvarez, Carina Rosa; Costantini, Alejandro Oscar; Bono, Angel Alfredo; Taboada, Miguel Angel; Gutiérrez Boem, Flavio Hernán; Fernández, Patricia Lilia; Prystupa, Pablo
- Año de publicación
- 2011
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Costantini, Alejandro Oscar. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Fernández, Patricia Lilia. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Prystupa, Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
One of the expected benefits of no-tillage systems is a higher rate of soil C sequestration. However, higher C retention in soil is not always apparent when notillage is applied, due e.g., to substantial differences in soil type and initial C content. The main purpose of this study was to evaluate the potential of no-tillage management to increase the stock of total organic C in soils of the Pampas region in Argentina. Forty crop fields under no-tillage and conventional tillage systems and seven undisturbed soils were sampled. Total organic C, total N, their fractions and stratification ratios and the C storage capacity of the soils under different managements were assessed in samples to a depth of 30 cm, in three layers (0-5, 5-15 and 15-30 cm). The differences between the C pools of the undisturbed and cultivated soils were significant (p less than 0.05) and most pronounced in the top (0-5 cm) soil layer, with more active C near the soil surface (undisturbed greater than no-tillage greater than conventional tillage). Based on the stratification ratio of the labile C pool (0-5/5-15 cm), the untilled were separated from conventionally tilled areas. Much of the variation in potentially mineralizable C was explained by this active C fraction (R 2 = 0.61) and by total organic C (R 2 = 0.67). No-till soils did not accumulate more organic C than conventionally tilled soils in the 0-30 cm layer, but there was substantial stratification of total and active C pools at no till sites. If the C stratification ratio is really an indicator of soil quality, then the C storage potential of no-tillage would be greater than in conventional tillage, at least in the surface layers. Particulate organic C and potentially mineralizable C may be useful to evaluate variations in topsoil organic matter. - Fuente
- Revista Brasileira de Ciencia do Solo
Vol.35, no.6
1985-1994
http://www.sbcs.org.br/en/ - Materia
-
C AND N STOCKS
CARBON STRATIFICATION
NO-TILLAGE
SOIL ORGANIC MATTER FRACTIONS
TILLAGE SYSTEMS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- acceso abierto
- Repositorio
.jpg)
- Institución
- Universidad de Buenos Aires. Facultad de Agronomía
- OAI Identificador
- snrd:2011alvarez
Ver los metadatos del registro completo
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Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa ArgentinoAlvarez, Carina RosaCostantini, Alejandro OscarBono, Angel AlfredoTaboada, Miguel AngelGutiérrez Boem, Flavio HernánFernández, Patricia LiliaPrystupa, PabloC AND N STOCKSCARBON STRATIFICATIONNO-TILLAGESOIL ORGANIC MATTER FRACTIONSTILLAGE SYSTEMSFil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Costantini, Alejandro Oscar. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Fernández, Patricia Lilia. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Prystupa, Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.One of the expected benefits of no-tillage systems is a higher rate of soil C sequestration. However, higher C retention in soil is not always apparent when notillage is applied, due e.g., to substantial differences in soil type and initial C content. The main purpose of this study was to evaluate the potential of no-tillage management to increase the stock of total organic C in soils of the Pampas region in Argentina. Forty crop fields under no-tillage and conventional tillage systems and seven undisturbed soils were sampled. Total organic C, total N, their fractions and stratification ratios and the C storage capacity of the soils under different managements were assessed in samples to a depth of 30 cm, in three layers (0-5, 5-15 and 15-30 cm). The differences between the C pools of the undisturbed and cultivated soils were significant (p less than 0.05) and most pronounced in the top (0-5 cm) soil layer, with more active C near the soil surface (undisturbed greater than no-tillage greater than conventional tillage). Based on the stratification ratio of the labile C pool (0-5/5-15 cm), the untilled were separated from conventionally tilled areas. Much of the variation in potentially mineralizable C was explained by this active C fraction (R 2 = 0.61) and by total organic C (R 2 = 0.67). No-till soils did not accumulate more organic C than conventionally tilled soils in the 0-30 cm layer, but there was substantial stratification of total and active C pools at no till sites. If the C stratification ratio is really an indicator of soil quality, then the C storage potential of no-tillage would be greater than in conventional tillage, at least in the surface layers. Particulate organic C and potentially mineralizable C may be useful to evaluate variations in topsoil organic matter.2011info:eu-repo/semantics/articlepublishedVersioninfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfdoi:10.1590/S0100-06832011000600015issn:0100-0683http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011alvarezRevista Brasileira de Ciencia do SoloVol.35, no.61985-1994http://www.sbcs.org.br/en/reponame:FAUBA Digital (UBA-FAUBA)instname:Universidad de Buenos Aires. Facultad de Agronomíaengpor1112114Pampa (general region)info:eu-repo/semantics/openAccessopenAccesshttp://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section42025-10-23T11:16:07Zsnrd:2011alvarezinstacron:UBA-FAUBAInstitucionalhttp://ri.agro.uba.ar/Universidad públicaNo correspondehttp://ri.agro.uba.ar/greenstone3/oaiserver?verb=ListSetsmartino@agro.uba.ar;berasa@agro.uba.ar ArgentinaNo correspondeNo correspondeNo correspondeopendoar:27292025-10-23 11:16:07.865FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomíafalse |
| dc.title.none.fl_str_mv |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| title |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| spellingShingle |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino Alvarez, Carina Rosa C AND N STOCKS CARBON STRATIFICATION NO-TILLAGE SOIL ORGANIC MATTER FRACTIONS TILLAGE SYSTEMS |
| title_short |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| title_full |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| title_fullStr |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| title_full_unstemmed |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| title_sort |
Distribuição e estratificação vertical do carbono e nitrogênio em solos sob diferentes manejos na região do Pampa Argentino |
| dc.creator.none.fl_str_mv |
Alvarez, Carina Rosa Costantini, Alejandro Oscar Bono, Angel Alfredo Taboada, Miguel Angel Gutiérrez Boem, Flavio Hernán Fernández, Patricia Lilia Prystupa, Pablo |
| author |
Alvarez, Carina Rosa |
| author_facet |
Alvarez, Carina Rosa Costantini, Alejandro Oscar Bono, Angel Alfredo Taboada, Miguel Angel Gutiérrez Boem, Flavio Hernán Fernández, Patricia Lilia Prystupa, Pablo |
| author_role |
author |
| author2 |
Costantini, Alejandro Oscar Bono, Angel Alfredo Taboada, Miguel Angel Gutiérrez Boem, Flavio Hernán Fernández, Patricia Lilia Prystupa, Pablo |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
C AND N STOCKS CARBON STRATIFICATION NO-TILLAGE SOIL ORGANIC MATTER FRACTIONS TILLAGE SYSTEMS |
| topic |
C AND N STOCKS CARBON STRATIFICATION NO-TILLAGE SOIL ORGANIC MATTER FRACTIONS TILLAGE SYSTEMS |
| dc.description.none.fl_txt_mv |
Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Costantini, Alejandro Oscar. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Taboada, Miguel Angel. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Fernández, Patricia Lilia. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. Fil: Prystupa, Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. One of the expected benefits of no-tillage systems is a higher rate of soil C sequestration. However, higher C retention in soil is not always apparent when notillage is applied, due e.g., to substantial differences in soil type and initial C content. The main purpose of this study was to evaluate the potential of no-tillage management to increase the stock of total organic C in soils of the Pampas region in Argentina. Forty crop fields under no-tillage and conventional tillage systems and seven undisturbed soils were sampled. Total organic C, total N, their fractions and stratification ratios and the C storage capacity of the soils under different managements were assessed in samples to a depth of 30 cm, in three layers (0-5, 5-15 and 15-30 cm). The differences between the C pools of the undisturbed and cultivated soils were significant (p less than 0.05) and most pronounced in the top (0-5 cm) soil layer, with more active C near the soil surface (undisturbed greater than no-tillage greater than conventional tillage). Based on the stratification ratio of the labile C pool (0-5/5-15 cm), the untilled were separated from conventionally tilled areas. Much of the variation in potentially mineralizable C was explained by this active C fraction (R 2 = 0.61) and by total organic C (R 2 = 0.67). No-till soils did not accumulate more organic C than conventionally tilled soils in the 0-30 cm layer, but there was substantial stratification of total and active C pools at no till sites. If the C stratification ratio is really an indicator of soil quality, then the C storage potential of no-tillage would be greater than in conventional tillage, at least in the surface layers. Particulate organic C and potentially mineralizable C may be useful to evaluate variations in topsoil organic matter. |
| description |
Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina. |
| publishDate |
2011 |
| dc.date.none.fl_str_mv |
2011 |
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info:eu-repo/semantics/article publishedVersion info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
| status_str |
publishedVersion |
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doi:10.1590/S0100-06832011000600015 issn:0100-0683 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011alvarez |
| identifier_str_mv |
doi:10.1590/S0100-06832011000600015 issn:0100-0683 |
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http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011alvarez |
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eng por |
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eng por |
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info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 |
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application/pdf |
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1112114 Pampa (general region) |
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Revista Brasileira de Ciencia do Solo Vol.35, no.6 1985-1994 http://www.sbcs.org.br/en/ reponame:FAUBA Digital (UBA-FAUBA) instname:Universidad de Buenos Aires. Facultad de Agronomía |
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