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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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