Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/10680
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dc.creatorSouza, Elisângela Dutra de-
dc.creatorCosta, Sérgio Ely Valadão Gigante de Andrade-
dc.creatorAnghinoni, Ibanor-
dc.creatorCarneiro, Marco Aurélio Carbone-
dc.creatorMartins, Amanda Posselt-
dc.creatorBayer, Cimélio-
dc.date.accessioned2015-12-10T12:03:48Z-
dc.date.available2015-12-10T12:03:48Z-
dc.date.issued2014-02-01-
dc.identifier.citationSOUZA, E. D. de. Soil quality indicators in a Rhodic Paleudult under long term tillage systems. Soil & Tillage Research, Amsterdam, v. 139, p. 28-36, 2014.pt_BR
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0167198714000130pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/10680-
dc.description.abstractMany investigations have focused in defining soil quality indicator components. However, for understanding better the impact of soil tillage systems on soil quality, a broader approach is demanded, with simultaneous soil attributes evaluations, by using multivariate analysis. The objective of this experiment was to evaluate the long-term effect of two tillage systems on the soil C and N stocks in comparison to those of native grassland and to identify the most suitable soil attributes for characterizing soil quality. The experiment was established in 1988 at the Agronomic Experimental Station of the Federal University of Rio Grande do Sul, Southern Brazil. Treatments consisted of two tillage systems (no-tillage and conventional tillage) and a reference area under native grassland. Soil analysis was performed up to 20 cm. Soil organic matter, C and N, physical fractionation was performed and carbon management index calculated. Microbial biomass C and N was determined as well as soil aggregate stability. From soil aggregation, soil average diameters and mass were grouped, and classes determined to calculate mean weight diameter. After 18 years, conventionally tilled soil showed lower total C and N stocks in comparison to no-tilled soil, which did not differ from native grassland soil. Soil C stocks ranged from 44.3 to 34.1 Mg ha1 for the native grassland and conventional tillage system and total nitrogen ranged from 5.2 to 4.1 Mg ha1 for the native grassland and no-tillage system, in the 0– 20 cm layer. Among the tested soil quality indicators, the microbial biomass-C, total and particulate C stocks, particulate C and N stocks, and mean weight diameter were the indexes that best indicated soil tillage system effects, and they are therefore recommended for future use in evaluating soil quality.pt_BR
dc.languageenpt_BR
dc.publisherUniversidade Federal de Lavraspt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceSoil & Tillage Researchpt_BR
dc.subjectNo tillagept_BR
dc.subjectConventional tillagept_BR
dc.subjectCarbon management indexpt_BR
dc.subjectSoil aggregationpt_BR
dc.titleSoil quality indicators in a Rhodic Paleudult under long term tillage systemspt_BR
dc.typeArtigopt_BR
Appears in Collections:DCS - Artigos publicados em periódicos

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