Pesticide residues in grapes from integrated production of the Slovene origin The CORRECTED TITLE is: Pesticide residues in grapes from vineyards included in integrated pest management in Slovenia.

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Baša Česnik , Helena ; Gregorčič , Ana ; Čuš , Franc (2008)

Abstract Although the list of pesticides used in integrated pest management (IPM) in grape growing and their annual application rates are limited, we are still confronted with the problem of pesticide residues in grapes. The paper presents the results of pesticide monitoring in 47 samples of wine grapes (Vitis vinifera L.) of the 2006 vintage from the vineyards included in IPM. The grape samples were analysed for the presence of 67 pesticides. Among them, 20 were allowed in IPM in 2006. Grapes were sampled at the harvest. Two internal analytical methods were used for determination of pesticides: GC-MS method for determination of dithiocarbamates and multiresidual GC-MS method. One grape sample (2.1%) contained no residues or they were below limit of detection, 28 samples (59.6%) contained residues lower or equal than maximum residue levels (MRLs) and 18 samples (38.3%) exceeded national MRLs for cyprodinil (concentration range was 0.03-0.40 mgkg-1 of cyprodinil) and fludioxonil (concentration was 0.03 mgkg-1 of fludioxonil). Multiple residues were found in 41 samples (87.2%). The highest number of pesticides detected per sample was seven. No violation of pesticides allowed in IPM was observed. Folpet (97.9%), cyprodinil (51.1%), dithiocarbamates (44.7%), chlorothalonil (23.4%), chlorpyriphos (19.1%) and pyrimethanil (14.9%) were the most frequently found pesticides in grapes. The risk assessment showed that the exceeded concentrations of cyprodinil and fludioxonil do not represent any risk for consumer's health (National Estimate of Short Term Intake in % of Acceptable Daily Intake was below 100%). Keywords: pesticides, plant protection products, GC-MS, grapevine helena.basa@kis.si (Basa Cesnik, Helena) ana.gregorcic@kis.si (Gregorcic, Ana) franc.cus@kis.si (Cus, Franc) Agricultural Institute of Slovenia, Central Laboratories - 17, Hacquetova--> - SI-1001 - Ljubljana - SLOVENIA (Basa Cesnik, Helena) Agricultural Institute of Slovenia, Central Laboratories - Ljubljana - SLOVENIA (Gregorcic, Ana) Agricultural Institute of Slovenia, Central Laboratories - Ljubljana - SLOVENIA (Cus, Franc) SLOVENIA
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