EN
Presented research concerns the evaluation of residues of chemical pesticides in crops, depending on the system and production sites. The study was conducted in 2005–2008 on 618 samples from conventional system and 320 from integrated system of plant material derived from the four voivodeships: Lubelskie, Podlaskie, Warmia-Mazury and Mazowsze. On the basis of the studies it was shown that the crops produced in the integrated system contained a larger percentage of samples with residues below the maximum levels compared to samples from conventional and less with above MRL. The percentage of samples from the border limits for Lubelskie and Podlaskie was equal to 4%, Warmia and Mazury 2% in Mazowieckie, there was no such irregularities.