**4. Conclusions**

The dissipation pattern of two fungicides and two insecticides on Clementine mandarin was studied. The dynamics of the decay of difenoconazole, imidacloprid, pyraclostrobin, and spinosad in field conditions was unique for each one. However, in all cases, a clear dissipation trend could be drawn. Spinosad decomposition was the most rapid, dissipating to below the quantification limit of 0.010 mg kg−<sup>1</sup> 28 day after spraying. Pyraclostrobin showed the lowest dissipation rate under the field conditions. It was the highest persistence period reported for pyraclostrobin on fruit to date. For all four pesticides, the postharvest stage did not diminish the pesticide residue concentrations, which were below their MRLs before entering in the postharvest phase. These results support their safe use in Clementine cropping under the studied conditions.

**Author Contributions:** N.B. contributed in the design of the study, ran the laboratory work, processed the data and drafted the paper. E.L. and P.P. carried out the pesticide applications, sampling, harvest and postharvest treatment. V.C. collaborated in laboratory work, data analysis and critically read and adjusted the manuscript. F.R. and H.H. gave the conceptual frame of project, supervised the design of the study and adjusted the final version of the manuscript. All the authors have read the final manuscript and approved the submission.

**Funding:** This research was funded by Instituto Nacional de Investigación Agropecuaria (INIA), gran<sup>t</sup> number L2\_12\_1\_VI\_CT\_GT4\_7639.

**Acknowledgments:** N. Besil be grateful to Agencia Nacional de Investigación e Innovación for her scholarship POS\_NAC\_2012\_1\_9348 and Programa de Apoyo a las Ciencias Básicas (PEDECIBA). The authors are grateful to Instituto Nacional de Investigación Agropecuaria for logistical support and Eng. Franco Bologna for technical assistance.

**Conflicts of Interest:** The authors declare no conflict of interest.
