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Information Journal Paper

Title

ASSESSING EARTHWORM AND MUNICIPAL SEWAGE SLUDGE IMPACTS ON MICROBIOLOGICAL AND BIOCHEMICAL SOIL QUALITY USING MULTIVARIATE ANALYSIS

Writers

JAFARI VAFA H. | RAIESI F.

Pages

 Start Page 168 | End Page 178

Abstract

 Introduction: Land application of organic wastes and biosolids such as MUNICIPAL SEWAGE SLUDGE has been an important and attractive practice for improving different properties of agricultural soils with low organic matter content in semi-arid regions, due to an increase of soil organic matter level and fertility. However, application of this organic waste may directly or indirectly affect soil bio-indicators such as microbial and enzymatic activities through a change in the activity of other soil organisms such as EARTHWORMs. EARTHWORMs are the most important soil saprophagous fauna and much of the faunal biomass is attributed to the presence of these organisms in the soil. Therefore, it is crucial to evaluate the effect of EARTHWORM activity on soil microbial and biochemical attributes, in particularly when soils are amended with urban sewage sludge. The purpose of this study was to evaluate the EARTHWORM effects on biochemical and microbiological properties of a calcareous soil amended with MUNICIPAL SEWAGE SLUDGE using FACTOR ANALYSIS (FA).

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