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Soil management affects distribution and the stocks of soil organic carbon and total nitrogen. The aim of this study was to evaluate the effect of different crop sequences and tillage systems on the vertical distribution and stocks of soil carbon and nitrogen. We hypothesized that no-tillage promotes surface organic carbon and total nitrogen accumulation, but does not affect the C and N stocks, when compared with reduced tillage. In addition, the [ver mas...]
dc.contributor.authorAlvarez, Carolina
dc.contributor.authorAlvarez, Carina Rosa
dc.contributor.authorCostantini, Alejandro Oscar
dc.contributor.authorBasanta, Maria
dc.date.accessioned2019-03-14T17:24:55Z
dc.date.available2019-03-14T17:24:55Z
dc.date.issued2014-09
dc.identifier.issn0167-1987
dc.identifier.otherhttps://doi.org/10.1016/j.still.2014.04.005
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4613
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0167198714000804?via%3Dihub
dc.description.abstractSoil management affects distribution and the stocks of soil organic carbon and total nitrogen. The aim of this study was to evaluate the effect of different crop sequences and tillage systems on the vertical distribution and stocks of soil carbon and nitrogen. We hypothesized that no-tillage promotes surface organic carbon and total nitrogen accumulation, but does not affect the C and N stocks, when compared with reduced tillage. In addition, the incorporation of maize in the crop sequence increases total organic carbon and total nitrogen stocks. Observations were carried out in 2010 in an experiment located in the semiarid Argentine Pampa, on an Entic Haplustoll. A combination of three tillage systems (no tillage, no tillage with cover crop in winter and reduced tillage) and two crop sequences (soybean–maize and soybean monoculture) were assessed. After 15 years of management treatments, soil samples to a depth of 100 cm at seven intervals, were taken and analyzed for bulk density, organic carbon and total nitrogen. Total organic carbon stock up to a depth of 100 cm showed significant differences between soils under different tillage systems (reduced tillage < no tillage = no tillage with cover crop), the last ones having 8% more than the reduced tillage treatment. Soybean–maize had 3% more organic C up to 100 cm depth than the soybean monoculture. Total nitrogen stock was higher under no-till treatments than under reduced tillage, both at 0–50 and 0–100 cm depths. Total organic carbon stratification ratios (0–5 cm/5–10 cm) were around 1.6 under no-till and lower under reduced tillage. The stratification ratio explains less than 40% of soil carbon stock. Tillage system had a greater impact on soil carbon stock than crop sequence.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherElseviereng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceSoil and tillage research 142 : 25-31. (September 2014)eng
dc.subjectSecuestro de Carbonoes_AR
dc.subjectCarbon Sequestrationeng
dc.subjectZea Mayses_AR
dc.subjectMaízes_AR
dc.subjectMaizeeng
dc.subjectSojaes_AR
dc.subjectSoybeanseng
dc.subjectGlycine Maxes_AR
dc.subjectZero Tillageeng
dc.subjectCero-labranzaes_AR
dc.subjectNitrogeneng
dc.subjectNitrógenoes_AR
dc.subjectManejo del Sueloes_AR
dc.subjectSoil Managementeng
dc.subjectCover Plantseng
dc.subjectPlantas de Coberturaes_AR
dc.subject.otherRegión Pampeana Semiáridaes_AR
dc.titleCarbon and nitrogen sequestration in soils under different management in the semi-arid Pampa (Argentina)eng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenEEA Manfredies_AR
dc.description.filFil: Alvarez, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentinaes_AR
dc.description.filFil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía; Argentinaes_AR
dc.description.filFil: Costantini, Alejandro Oscar. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Universidad de Buenos Aires. Facultad de Agronomía, Cátedra de Edafología; Argentinaes_AR
dc.description.filFil: Basanta, Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentinaes_AR
dc.subtypecientifico


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