Year 2016, Volume 1, Issue 1

Year : 2016
Volume : 1
Issue : 1
Authors : Sanja LAZIĆ, Dragana ŠUNJKA, Srđan PANIĆ, Zdravko BJELICA, Slavica VUKOVIĆ
Abstract : A neonicotinoid insecticide acetamiprid and dicarboximide fungicide iprodione, are used in sweet cherry for control of the major pest (Rhagoletis cerasi L.) and pathogen (Monilia laxa). For the purpose of the safe consumption of agricultural products after pesticide application, studies on their dissipation kinetics are essential to work out their half-lives (DT50) and pre-harvest intervals (PHI). However, there is a lack of information on the persistence of acetamiprid and iprodione in sweet cherry fruits in different climatic conditions of production. Therefore, the objectives of this study were to investigate the dissipation and residues of acetamiprid and iprodione in sweet cherry fruits, as well as to evaluate the validity of prescribed PHI for these pesticides. Field experiments were conducted in a sweet cherry orchard, near Novi Sad, where acetamiprid and iprodione were applied at a recommended concentration. At various time intervals, from treatment to harvest, having in mind PHI (14 days for acetamiprid and 7 days for iprodione) representative samples of sweet cherry fruits were collected. Extraction of pesticides was carried out by QuEChERS method, followed by HPLC-DAD analysis. The method was validated in accordance with the SANCO/12571/2013 document and was used the determination of pesticides in real sweet cherry samples. During the study period, the concentration of acetamiprid and iprodione decreased from 0.52 mg/kg to 0.11 mg/kg and from 0.29 mg/kg to 0.07 mg/kg, respectively. The dissipation of acetamiprid and iprodione residues over the time fitted to the equation Ct=0.52-0.22t and Ct=0.29-0.20t, with DT50 of 3.15 and 3.47 days, respectively. Finally, the content of acetamiprid and iprodione in sweet cherry samples, at the end of PHI, were below the maximum allowed level specified by the Serbian (1.5 mg/kg and 3 mg/kg) and EU MRLs (1.5 mg/kg and 10 mg/kg).
For citation : Lazić, S., Šunjka, D., Panić, S., Bjelica, Z., Vuković, S. (2016). Dissipation rate and residues of acetamiprid and iprodione in sweet cherry fruits. AGROFOR International Journal, Volume 1. Issue No. 1. pp. 143-150. DOI:10.7251/AGRENG1601143L
Keywords : sweet cherry, Acetamiprid, Iprodione, dissipation rate
download paper