THE EVOLUTION OF PLANT BIOMASS IN SOIL POLLUTED WITH CRUDE OIL IN DIFFERENT EXPERIMENTAL VARIANTS

Mariana Marinescu, Anca Lacusteanu, Eugenia Gament, D. M. Motelica, M. Marinescu

Abstract


Soil acidity is among the important environmental factors which can influence plant growth and can seriously limit crop production. Therefore, liming acid soils is basic to maintain an optimal pH. Soil pH has a large influence on the availability of plants nutrients. The steel slag can be used as an amendment for an acid soil considering the high contents of CaO and MgO. The paper presents the preliminary obtained data regarding the use of steel slag resulted as a metallurgical waste from a Romanian steel refinery and its effect on the soil pH. The physical and chemical characteristics of the acid soil are presented. The effects of the steel slag applied at different rates on soil pH have been investigated in the laboratory experiment.

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