title: [Microsampling of rhizosphere soil and laboratory artefacts].
abstract: A parallel analysis of the microsamples of surrounding soil and microsamples of rhizosphere soil did not reveal the so-called rhizospheric effect. The data obtained showed that dilution significantly influences the results of determination of the number of soil microorganisms. The actual number of microorganisms revealed in soil samples greatly differed from the theoretically predicted values. The enumeration of microorganisms in soil microsamples by direct count and, especially, by the plating method with the use of conversion coefficients based on the degree of sample dilution gave erroneous results.
authors.affiliation: Department of Soil Biology, Faculty of Soil Science, Moscow State University, Vorob'evy gory, Russia.
authors.forename: L M
authors.initials: LM
authors.lastname: Polianskaia
authors.forename: M Kh
authors.initials: MKh
authors.lastname: Orazova
authors.forename: O A
authors.initials: OA
authors.lastname: Burkanova
authors.forename: D G
authors.initials: DG
authors.lastname: Zviagintsev
mesh_terms: D016477:Artifacts; D015169:Colony Count, Microbial; D012987:Soil; D012988:Soil Microbiology
chemical_list: D012987:Soil