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| Martins,Paula Cristina Caruana; Dias Junior,Moacir de Souza; Ajayi,Ayodele Ebenezer; Moreira,Fátima Maria de Souza. |
| Incongruous management techniques have been associated with some significant loss of agricultural land to degradation in many parts of the world. Land degradation results in the alteration of physical, chemical and biological properties of the soil, thereby posing a serious threat to sustainable agricultural development. In this study, our objective is to evaluate the changes in a Cambisol structure under six land use systems using the load bearing capacity model. Sampling was conducted in Amazonas Region, Brazil, in the following land use: a) young secondary forest; b) old secondary forest; c) forest; d) pasture; e) cropping, and f) agroforestry. To obtain the load bearing capacity models the undisturbed soil samples were collected in those land use... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Structure degradation; Bulk density; Precompression stress; Amazonas. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000600006 |
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| Martins,Paula Cristina Caruana; Dias Junior,Moacir de Souza; Andrade,Maria Luiza de Carvalho; Guimarães,Paulo Tácito Gontijo. |
| The main source of soil structure degradation in coffee plantation is the machinery traffic because these operations may cause soil compaction affecting the crop development. This study aimed to generate the load-bearing capacity models for a Red-Yellow Latosol and to determine through the use of these models the soil susceptibility to compaction of the coffee plantation due to the implantation time and the compaction caused by the machinery traffic on the traffic lines located at the top and bottom of the ground. This study was carried out in the EPAMIG Experimental Farm, located at Três Pontas, MG, in coffee plantations (Coffee arabica L.) with 2, 7, 18 and 33 years of establishment. To obtain the load-bearing capacity models, 12 undisturbed soil samples... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Precompression stress; Structure degradation; Soil physics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000400002 |
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