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International Agrophysics
publisher:Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland
ISSN: 0236-8722

vol. 22, nr. 3 (2008)

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Microbiological indices of soil quality fertilized with dairy sewage sludge
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S. Jezierska-Tys1, M. Frąc2
1 Department of Agricultural Microbiology, University of Life Sciences, Leszczyńskiego 7, 20-069 Lublin, Poland
2 Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin 27, Poland

vol. 22 (2008), nr. 3, pp. 215-219
abstract The study was performed on a pot experiment in which a grey-brown podzolic soil was amended with two different doses of dairy sewage sludge (30 and 75 t ha-1) – 1 and 2.5% of DSS. During periode of incubation in different terms of analyses (7, 14, 30, 60, 90 and 120 days after the incorporation of dairy sewage sludge) the following analyses were done: so-called total number of bacteria, so-called total number of filamentous fungi, number of cellulolytic bacteria, respiration activity and dehydrogenase activity. Dairy sewage sludge applied to the soil caused stimulation of the total number of bacteria, fungi and cellulolytic bacteria and respiration activity and inhibition of dehydrogenase activity in a grey-brown podzolic soil.
keywords dairy sewage sludge, microorganisms, respiration activity, soil