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Descripción
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| Acidic soils of Cañamero¿s raña formation in western Spain were cleared and then cropped in the 40¿s of 20th century. As a consequence, extraction of Ca through the harvest resulted in a lower Ca:Al ratio which increased the Al toxicity; also, soil tillage reduced the organic matter content. These effects led to a drastic yield reduction and the retirement of many farmers. This study has evaluated different management strategies (direct drill (DD) vs traditional tillage (TT) ) and a Caamendment application (sugar beet foam + red gypsum (SBF+RG) ) to recover soil quality in this area. The evaluation has involved the study of different enzyme activities (ß-glucosidase, dehydrogenase and ß-glucosaminidase) as biochemical indicators and other parameters such as pH, total organic carbon or microbial biomass carbon (MBC). After 4 years of SBF+RG application and 3 years of DD, the amendment has increased the pH and the DD management has increased soil organic matter content. ß-glucosidase activity has been positively affected by DD, whereas dehidrogenase activity has increased with the amendment and ß-glucosaminidase activity has concentrated around crop residues. The analysis of MBC has shown a negative effect of the amendment but a positive effect of DD (without significant differences in this case). Finally, stratification ratios indicate as well a certain recovery of the natural conditions through the mentioned practices that have been also effective to prevent soil quality losses in other Mediterranean areas. | |
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Internacional
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Si |
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Nombre congreso
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4Th International Congress EUROSOIL 2012 |
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Tipo de participación
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960 |
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Lugar del congreso
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Bari, Italia |
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Revisores
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Si |
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ISBN o ISSN
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99-9999-999-9 |
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DOI
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Fecha inicio congreso
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02/07/2012 |
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Fecha fin congreso
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06/07/2012 |
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Desde la página
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1006 |
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Hasta la página
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1006 |
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Título de las actas
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Libro de resúmenes del 4Th International Congress EUROSOIL 2012 |