Influence of sewage sludge application on physical and chemical properties of Gypsisols

Abstract:

The abundant gypsiferous soils of the semi-arid central Ebro valley are very sensitive to environmental change. Poor land management practices have caused severe degradation of the soils near the city of Zaragoza, leading to loss of productivity and of ecological function and badland formation on the slopes. The use of sewage sludge for land rehabilitation is increasingly being considered as a technical solution to reverse this environmental degradation and to promote the re-establishment of vegetation cover. This paper describes changes in selected properties of a Gypsisol following the addition of sewage sludge. Experiments investigating the influence of a range of application rates were conducted on 60×100 cm plots. The magnitudes of increase in salinity and decrease in pH were found to be dependent on the sludge application rate. Several beneficial changes were observed including increases in organic …

Año de publicación:

1998

Keywords:

Fuente:

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