engleski

Growing of Crops on Soils Contaminated by Petrol Hydrocarbons

The man’ s activity has caused environmental changes ever since his beginnings on the earth. Over millions of years of development of mankind these changes have been slow and slight, however, after industrialisation, such changes have become more adverse. One of the most environmentally harmful products of men’ s activity is waste. What is waste? The answer to this question varies depending on who gives the answer. Waste can be considered as a fundamental issue for the survival of civilization on this planet. As defined in the Framework waste legislation of European Union it means substances and items categorized under the said Framework implementing regulations, which the owner disposes of, intends to or has to dispose of. One of the outcomes of drilling for oil is waste i.e. oil contaminated solid consisting of cuttings and a number of waste fluids used in the drilling process. The said solid contains various chemical compounds, including those that can be classified as environmentally harmful or toxic substances. In order to determine the environmental harmfulness of this matter, in particular potential harmfulness for the soil and water, and also crops, knowing that contaminants – pollutants enter animal and human food chain via soil, this issue has been addressed. In spring 2006 a stationary field experiment was set up. Trial variants are: control ; soil contaminated by petroleum hydrocarbons at three levels (8 ; 4 and 2 l m-2) and soil contaminated by oil solidificate, also at three levels (30 ; 20 and 10 kg m-2). During research in chemical compositions of the soil changes are recorded (soil reaction, organic matter content, total petroleum hydrocarbons, heavy metals, polycyclic aromatic hydrocarbon), also achieved crop yield, crop establishment, and the ratio of heavy metal transport from the soil via the plant and to the grain.

Contamineted soil; petroly hydrocarbons; crops

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