Joint International Conference on Long-term Experiments ...

Although the toxic element content of upper soil levels showed no high values (and
therefore risk in food safety) again we analysed the element composition of soil samples
besides the pesticide residues. In the case of the bio field of Látókép we measured lower
values than the limit value by Hungarian orders, in homogenous distribution in the more
or less deep soil layers. On the other hand, in the case of intensively cultivated fields the
cadmium concentration is near to the B value, suggesting contamination in certain
layers (Figure 2). Although the measured values are lower than the contamination level
(C value) currently not in arrangement and the environmental remediation
contamination limit (D value), it is recommended to analyse this parameter in the case
of those sensitive plants that are susceptible to accumulation of cadmium. The little
higher concentration (~10-15%) than the natural average value of copper in the case of
some samples is a consequence of intensive agronomy. From the results the near to limit
value of zinc concentration at Szentes in lower soil layers is also remarkable.
Nádudvar
(maize)
Szentes
(wheat)
Depth (cm)
Depth (cm)
0
50
100
150
200
250
300
0
50
100
150
200
250
300
0 5 10 μg/kg 15 20 25
sum of HCHs
sum of drins
sum of DDTs
0 5 10 μg/kg 15 20 25
sum of HCHa
sum of drins
sum od DDTs
Figure 1: Pesticide residues in the examined soil profiles, 2006 (μg/kg)
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