Table 3.

Pesticides most frequently quantified in leek in 2016

Pesticide	% samples above LOQ	Approval status in 2016 (Reg. 1107/2009) and comments
Dithiocarbamates (RD)	27.2	Dithiocarbamates fungicides approved: maneb, mancozeb, metiram, propineb, thiram and ziram. Possibly, the detection of CS2 relates to false positive results due to the occurrence of naturally occurring substances in Alliaceae
Tebuconazole (RD)	11.1	Approved fungicide
Boscalid (RD)	10.9	Approved fungicide
Azoxystrobin	8.1	Approved fungicide
Difenoconazole	8.1	Approved fungicide

LOQ: limit of quantification; RD: residue definition.