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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
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dc.contributor.author | Alvarez, Carolina | |
dc.contributor.author | Alvarez, Carina Rosa | |
dc.contributor.author | Costantini, Alejandro Oscar | |
dc.contributor.author | Basanta, Maria | |
dc.date.accessioned | 2019-03-14T17:24:55Z | |
dc.date.available | 2019-03-14T17:24:55Z | |
dc.date.issued | 2014-09 | |
dc.identifier.issn | 0167-1987 | |
dc.identifier.other | https://doi.org/10.1016/j.still.2014.04.005 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/4613 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0167198714000804?via%3Dihub | |
dc.description.abstract | 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 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.format | application/pdf | eng |
dc.language.iso | eng | |
dc.publisher | Elsevier | eng |
dc.rights | info:eu-repo/semantics/restrictedAccess | eng |
dc.source | Soil and tillage research 142 : 25-31. (September 2014) | eng |
dc.subject | Secuestro de Carbono | es_AR |
dc.subject | Carbon Sequestration | eng |
dc.subject | Zea Mays | es_AR |
dc.subject | Maíz | es_AR |
dc.subject | Maize | eng |
dc.subject | Soja | es_AR |
dc.subject | Soybeans | eng |
dc.subject | Glycine Max | es_AR |
dc.subject | Zero Tillage | eng |
dc.subject | Cero-labranza | es_AR |
dc.subject | Nitrogen | eng |
dc.subject | Nitrógeno | es_AR |
dc.subject | Manejo del Suelo | es_AR |
dc.subject | Soil Management | eng |
dc.subject | Cover Plants | eng |
dc.subject | Plantas de Cobertura | es_AR |
dc.subject.other | Región Pampeana Semiárida | es_AR |
dc.title | Carbon and nitrogen sequestration in soils under different management in the semi-arid Pampa (Argentina) | eng |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | eng |
dc.description.origen | EEA Manfredi | es_AR |
dc.description.fil | Fil: Alvarez, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina | es_AR |
dc.description.fil | Fil: Alvarez, Carina Rosa. Universidad de Buenos Aires. Facultad de Agronomía; Argentina | es_AR |
dc.description.fil | Fil: Costantini, Alejandro Oscar. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina. Universidad de Buenos Aires. Facultad de Agronomía, Cátedra de Edafología; Argentina | es_AR |
dc.description.fil | Fil: Basanta, Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina | es_AR |
dc.subtype | cientifico |
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