Abstract
Abstract The aim of this study was to evaluate the Scabiosa ochroleuca suitability for growth on heavy metals contaminated substrate obtained as a result of Zn–Pb ores exploitation and their processing. Three variants of cultivation were tested in vegetative hall conditions: post-flotation wastes (control), wastes enriched with either mineral fertilisation or with sewage sludge. The possibility of future direct use of the studied species on post-flotation settling pond was determined on the basis of biometric measurements and analysis efficiency of photosynthetic apparatus, that is, pigments content and chlorophyll a fluorescence. The results showed that untreated wastes negatively influenced on plants morphological and physiological status. On the contrary, the application of sewage sludge improved growth and development of cream scabious. Thus, not only the selection of proper plant material, tolerant to toxic levels of heavy metals and other hostile conditions, but also the waste treatment are crucial when metalliferous areas are to be reclaimed.
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