Residue and dissipation dynamic of spinetoram insecticide in pear fruits

Cacopsylla pyri (Linnaeus, 1758) is the most significant and widespread pear pest. It attacks only, causing direct indirect damages. This study was conducted in order to evaluate efficacy of insecticide spinetoram control C. pyri. The experiment set up according EPPO methods, at locality Kula (Republic Serbia) a orchard (Williams variety). Spinetoram (250 g/kg a.i., WG) foliar applied amount 0.3 kg/ha, during overlapping pest generations, when on BBCH 75 scale. evaluated through number larvae aged L1-L3 L4-L5. has shown satisfying efficacy, especially (81.6%). In dissipation study, residues fruits were determined using QuEChERS method followed by HPLC-DAD. validated fulfill SANTE/12682/2019 criteria. Three days after application, below MRL (0.2 mg/kg). results have that pattern first-order kinetics (R2 = 0.979) with half-life 2.17 days, fruits. suggests could be safely used pear, it take an important place resistance management.