title: [The nitrogen fixing activity of actinomycetes in the dark chestnut soil of Northern Kazakhstan].
abstract: About 250 strains of actinomycetes have been isolated from dark chestnut soil of the Northern Kazakhstan in crop rotation. Nitrogen fixing actinomycetes constituted 12% of the total number. Their productivity was rather low: from 0.11 o 1.77 mgN2/g of assimilated sucrose. But since their number is high, these microorganisms may play an important role in fixation of molecular nitrogen and maintenance of nitrogen equilibrium in soil during crop rotation.
mesh_terms: D000192:Actinomycetales / Q000378:metabolism*; D007623:Kazakhstan; D009586:Nitrogen Fixation; D012988:Soil Microbiology; D013302:Streptomyces / Q000378:metabolism
vernacular_title: Azotofiksiruiushchaia aktivnost' aktinomitsetov v temno-kashtanovoĭ pochve Severnogo Kazakhstana