Heavy metals in chernozem soil with different fertilization systems
1993
Bogdanovic, D. | Dozet, D. | Ubavic, M. | Malesevic, M. (Faculty of Agriculture, Novi Sad (Yugoslavia). Institute of Field and Vegatable Crops)
The objective of the investigation discussed in this paper was to assess the effect of different fertilization systems on the content of some heavy metals in soil taken from long-term field trials. Naturally fertile soils (unfertilized plots) were used for comparison. The contents of Cd, Pb, Ni and Cr in 1 Na2EDTA and 1N HCl extract were determined by atomic absorption spectrophotometry. After 12 and 26 years of field trials established on a chernozem soil, the levels of the four harmful and hazardous elements were within tolerable limits.
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