Search for: [Abstract = "The samples were taken from the plots experiment established in the areas of the \"Przyjaźń Narodów\" lignite mine in Łęknica Region. The discussed land characterized very unfavorable physical\-chemical properties chemiczne \[Krzaklewski, Wójcik 2007, Greinert 1988, Greinert et al. 2009\]. The mean soil samples taken from individual soil horizons were extracted by sodium hydroxide \(Schnitzer method\)."]