EFFECT OF APPLICATION OF DOLOMITE IN CONTAMINATED SOIL ON THE EMERGENCE AND EARLY GROWTH OF HIGHER PLANTS

摘要

Contamination of soils with heavy metals is one of the main obstacles to the possibility of obtaining a safety and healthy crops from these soils, and high concentrations of these metals may have a toxic effect on living organisms - microorganisms, plants, animals and humans. Various substances acting as improvers of soil properties and composition are known and used in practice in order to eliminate the toxic effect. The chemical composition and properties of dolomite define it as a suitable means of improving the pH and chemical composition of soils. In the present study, experiments were performed to determine the effect of dolomite additives in soils contaminated with heavy metals, in the emergence and early growth of two species of higher plants - oats (Avena sativa) and alfalfa (Medicago sativa). The parameters total number of plants and stem height were monitored and the obtained dry mass was measured. The results performed show that the amounts of added dolomite have influence on the early growth and development of both species higher plants. Also it was established that the oats (Avena sativa) is more tolerant to heavy metal contamination.