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Aluminum hydroxy-interlayered minerals and chemical properties of a subtropical Brazilian Oxisol under no-tillage and conventional tillage Rev. Bras. Ciênc. Solo
Inda,Alberto Vasconcellos; Torrent,José; Barrón,Vidal; Bayer,Cimélio.
No tillage systems significantly influence the soil system, but knowledge about the effects on the mineralogy of tropical and subtropical soils is limited. This study evaluated the long-term effects (26 years) of no-tillage (NT) on aluminum hydroxy-interlayered minerals of a subtropical Oxisol in Southern Brazil (Guarapuava, PR), compared to the same soil under conventional tillage (CT). The clay fraction (< 2 µm) in soil samples of the surface horizons of a field experiment under both management systems was analyzed by X-ray diffraction (XRD) to identify and characterize Al hydroxy-interlayered minerals before and after treatment with sodium citrate to remove intra-layer material. Soil liquid (solution) and solid phases were also characterized. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HIS; HIV; Organic carbon; Soil management systems; Mineral stability.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000100004
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Chemical and mineralogical changes in a Brazilian Rhodic Paleudult under different land use and managements Rev. Bras. Ciênc. Solo
Fink,Jessé Rodrigo; Inda,Alberto Vasconcellos; Almeida,Jaime Antonio de; Bissani,Carlos Alberto; Giasson,Elvio; Nascimento,Paulo César do.
Changes in land use and management can affect the dynamic equilibrium of soil systems and induce chemical and mineralogical alterations. This study was based on two long-term experiments (10 and 27 years) to evaluate soil used for no-tillage maize cultivation, with and without poultry litter application (NTPL and NTM), and with grazed native pasture fertilized with cattle droppings (GrP), on the chemical and mineralogical characteristics of a Rhodic Paleudult in Southern Brazil, in comparison with the same soil under native grassland (NGr). In the four treatments, soil was sampled from the 0.0-2.5 and 2.5-5.0 cm layers. In the air-dried fine soil (ADFS) fraction (∅ < 2 mm), chemical characteristics of solid and liquid phases and the specific surface...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon; Soil management systems; Animal waste; Mineral stability.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400026
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The influence of land use systems on soil and surface litter fauna in the western region of Santa Catarina Rev. Ciênc. Agron.
Bartz,Marie Luise Carolina; Brown,George Gardner; Orso,Renato; Mafra,Álvaro Luiz; Baretta,Dilmar.
The aim of this study was to evaluate the abundance of soil and surface litter fauna in the western region of Santa Catarina state, southern Brazil, in the following land use systems (LUS): no-tillage crops (NT), integrated crop-livestock (ICL), pasture (PA), Eucalyptus plantation (EP) and native forest fragments (NF). Sampling was done in three counties in the western region of Santa Catarina: Xanxerê, Chapecó and São Miguel do Oeste, in two seasons (winter and summer). The evaluation of soil/litter fauna in each LUS was performed by installing nine "pitfall traps" per sampling grid (3 x 3). The counties are true replicas. The soil for the chemical attributes was collected at the same sampling points for soil fauna. Altogether, 17 taxa were identified in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil management systems; Soil biology; Soil biodiversity; Sustainability; Pitfall traps.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500003
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