Water-soluble organic matter and biological activity of a degraded soil amended with pig slurry

The effects of pig slurry (PS) addition at rates of 30, 90 and 150 m 3 ha − 1 per year for five consecutive years on total organic C (TOC), water-soluble organic C (WSOC), soil microbial biomass C (MBC), basal respiration (BR) and dehydrogenase (DEH) and β-glucosidase (GLU) activities of soil were i...

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Bibliographic Details
Published in:The Science of the total environment 2007-05, Vol.378 (1), p.101-103
Main Authors: Hernández, Diana, Fernández, José M., Plaza, César, Polo, Alfredo
Format: Article
Language:English
Subjects:
Animals
beta-Glucosidase - metabolism
Carbon - analysis
Enzyme activities
Fertilizers
Hordeum
Hordeum vulgare
Manure
Microbial activity
Oxidoreductases - metabolism
Pig slurry
Soil
Soil Microbiology
Solubility
Swine
Water
Water-soluble organic C
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Summary:The effects of pig slurry (PS) addition at rates of 30, 90 and 150 m 3 ha − 1 per year for five consecutive years on total organic C (TOC), water-soluble organic C (WSOC), soil microbial biomass C (MBC), basal respiration (BR) and dehydrogenase (DEH) and β-glucosidase (GLU) activities of soil were investigated in a field experiment conducted under barley cultivation and semiarid conditions. Cumulative PS addition at 90 and 150 m 3 ha − 1 rates had a significant stimulating effect on MBC content and DEH and GLU activities. In contrast, no significant effect of PS amendment on TOC, WSOC and BR was detected. These results suggest that PS addition revitalizes soil microbial metabolism in transitory form because of the low stability of the added organic matter.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2007.01.020