2005
DOI: 10.1590/s0103-90162005000200012
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Abstract: Pedologic alterations after long-term sugar cane (Saccharum officinarum) cropping cycles under traditional soil management systems were studied on a farm in Bariri, SP, Brazil. A toposequence was established to evaluate the effects of the soil position in the relief in changing soil physical attributes. Morphological field descriptions and laboratory analyses were carried out on vertical profiles of the upper, middle and lower thirds of a Typic Haplorthox slope. Soil bulk density and macroporosity changed alon… Show more

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Cited by 14 publications
(11 citation statements)
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References 11 publications
(11 reference statements)
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“…Cambardella et al (2004) verified the effect of landscape on soil quality by finding positive relationships between the best quality indices, also obtained with physical attributes, and the higher positions in the landscape. In the study of Soares et al (2005), the relief influenced the changes in density and macropores of an Oxisol under sugarcane, confirming the results of Souza (2004).…”
Section: Resultssupporting
confidence: 83%
See 1 more Smart Citation
“…Cambardella et al (2004) verified the effect of landscape on soil quality by finding positive relationships between the best quality indices, also obtained with physical attributes, and the higher positions in the landscape. In the study of Soares et al (2005), the relief influenced the changes in density and macropores of an Oxisol under sugarcane, confirming the results of Souza (2004).…”
Section: Resultssupporting
confidence: 83%
“…The potential of soil degradation by a management varies according to the location of the landscape and the spatial distribution of landscape attributes (Cambardella et al, 2004;Pennock, 2003). Soares et al (2005) affirmed that, to understand the temporal variation in the soil physical attributes, it is necessary to consider vertical and lateral variations (along the toposequence). Juhász et al (2006) concluded that the physical-hydric behavior of the studied soil is influenced by landscape conditions.…”
Section: Introductionmentioning
confidence: 99%
“…A geometria dos poros pode ser muito complexa com poros de diversos tamanhos e formatos podendo ser muito ou pouco interconectados. Um solo que tenha muitos poros de pequeno tamanho, o que pode ser visto no solo exposto (Figura 3B) e no tratamento Gonçalo-Alves (Figura 3C), favorecerá a retenção de água e fará com que os movimentos de água e ar sejam mais lentos; deste modo, a ocorrência de compactação na camada superficial do solo dá origem aos poros denominados fissurais ou planares, os quais promovem redução na taxa de infiltração de água (Soares et al, 2005). Os poros fissurais são indicativos de processos de estresse físico do solo (Lima et al, 2005).…”
Section: Resultsunclassified
“…Farming methods that use mechanical tillage, such as the mouldboard plough for seedbed preparation or discing for weed control, can promote soil C loss by several mechanisms: they disrupt soil aggregates, which protect soil organic matter from decomposition (Karlen & Cambardella, 1996;Six et al, 1999;Soares et al, 2005), they stimulate short-term microbial activity through enhanced aeration, resulting in increased levels of CO 2 and other gases released to the atmosphere (Bayer et al, 2000a;2000b;Kladivko, 2001), and they mix fresh residues into the soil where conditions for decomposition are often more favourable than on the surface (Karlen & Cambardella 1996;Plataforma Plantio Direto, 2006). Furthermore, tillage can leave soils more prone to erosion, resulting in further loss of soil C (Bertol et al, 2005;Lal, 2006).…”
Section: Conventional Versus No-tillage Systemmentioning
confidence: 99%