EN
This paper presents results of pesticide residues research in berry fruits and fruit juices from the north-eastern Poland in 2005–2009. During five-year testing totally 460 samples of fruit and fruit juices were analysed (mainly raspberries, strawberries and currants). 48.7% (224) samples contained pesticide residues below maximum residue levels 38.0% (175) and above MRLs 10.7% (49). 140 active substances were searched and 32 were found, which generally constituted fungicides (dithiocarbamates, procymidone, flusiazole) and less insecticides (fenitrothion, fenazaquin, chloryrifos). Samples with forbidden plant protection products were also determined like tolylfluanid (F) in strawberries and endosulfan (I) in currants. In 25% samples more than one residue were found (from two to seven residues).