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. 2016 Dec 27;24(6):5469–5485. doi: 10.1007/s11356-016-8272-y

Fig. 4.

Fig. 4

Distribution of incidents for which residue analysis of imidacloprid has been performed reported by SAGIR before (1995–2004) and after (2005–2014) the ban use of imidacloprid as maize seed treatment in 2004; *indicates that the proportion of the number of incidents for which imidacloprid residues have been detected has significantly decreased after 2004 (Fisher’s exact test, p < 0.05)