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ISHS Acta Horticulturae 826: I International Medicinal and Aromatic Plants Conference on Culinary Herbs

THE EFFECT OF COMMON DANDELION (TARAXACUM OFFICINALE WEB.) RHIZOSPHERE ON HEAVY METAL CONTENT AND ENZYMATIC ACTIVITY OF SOIL

Authors:   E.J. Bielińska, B. Kołodziej
Keywords:   Dandelion, Taraxacum officinale, soil, rhizosphere, enzymatic activity, heavy metal
DOI:   10.17660/ActaHortic.2009.826.48
Abstract:
The research was carried out in order to determine the influence of common dandelion rhizosphere on heavy metal content and enzymatic activity of soils in 6 parks situated in the city center of the Upper Silesia and towns of the eastern part of Poland. The research covered soils of the common dandelion rhizosphere and non-rizosphere zones. In the experiment a significant differentiation of heavy metal (Zn, Pb, Cd, Cu) content and enzymes examined (dehydrogenases, phosphateses, ureases and proteases) chemical activity both, between localizations studied as well as inside them was stated. Soils originated from the Upper Silesia (Zabrze, Bytom, Miasteczko Ślaskie) were characterized by the highest heavy metal content and at the same time the lowest enzymatic activity. Independently from the localization, in the soils of rhizosphere zone heavy metal content was significantly lower and the enzymatic activity of all enzymes studied several times higher than marked in the non-rhizosphere zone. The observed stimulation of enzymatic activity of soils coming from rhizosphere zones was connected with the increase of C organic and total N content. The results obtained indicate the common dandelion rhizosphere zone is a natural filter cleaning the soil environment of the pollution coming from urban areas.
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