Determination of Pesticide Residues in Grapes From Vineyards Implemented Good Agricultural Practice in Uşak

This study was conducted to determine pesticides residue levels in grapes samples which taken from vineyards implemented good agricultural practice in Uşak province in 2017 growing seasons. A total of 51 grape samples from three districts were collected. Liquid chromatography with mass spectrometry (LC-MS/MS) and gas chromatography with mass spectrometry (GC-MS/MS) devices were used for all analyses. In 45.1% of the samples taken weren’t detected any pesticide residue. In 54.9% of grape samples found residue, none of this pesticides exceeded the maximum residue limits given in Turkish Food Codex. The most common pesticides detected in grape samples with residue were spinosad, pyrimethanil and boscalid respectively. Thirteen different pesticide active substances were detected below the MRL in the samples. All pesticides detected in the samples were fungicides (85%) and insecticides (15%).