"Kub\u00E1t, Jarom\u00EDr" . . "Determination of the microbial utilisation nad transformation of humic substances extracted from soils of long-term field experiments."@en . . . . "63" . . "RIV/00027006:_____/00:00000044" . "Determination of the microbial utilisation nad transformation of humic substances extracted from soils of long-term field experiments." . . "Determination of the microbial utilisation nad transformation of humic substances extracted from soils of long-term field experiments."@en . "V\u00FDzkumn\u00FD \u00FAstav rostlinn\u00E9 v\u00FDroby Praha" . "Filip, Zdenek" . "humic substances; long-term field experiments"@en . "Humic acid preparations extracted with alkali from unfertilised and fertilised (NPK + organic manure) plots of long-term field experiments were added as a supplemental source of nutrients or as the sole sources of carbon and nitrogen to semi-aerobic cut ures of complex microbial communities indigenous to the same individual soils. The results indicate that an increase in soil organic matter which is frequently observed in long-term fertilised soils may be atributed to the enhanced resistance of humic a cid to microbial degrdation."@en . . "[F92CE60E4AD9]" . . "Umsetzbare organische Bodensubstanz" . "Humic acid preparations extracted with alkali from unfertilised and fertilised (NPK + organic manure) plots of long-term field experiments were added as a supplemental source of nutrients or as the sole sources of carbon and nitrogen to semi-aerobic cut ures of complex microbial communities indigenous to the same individual soils. The results indicate that an increase in soil organic matter which is frequently observed in long-term fertilised soils may be atributed to the enhanced resistance of humic a cid to microbial degrdation." . . . "P(EP0960006470)" . "Determination of the microbial utilisation nad transformation of humic substances extracted from soils of long-term field experiments." . "708498" . . . "1"^^ . . "3"^^ . "RIV/00027006:_____/00:00000044!RIV/2001/MZE/M01001/N" . "2"^^ . "Kub\u00E1t, Jarom\u00EDr" . "Praha" .