Dissipation and residue of triadimefon in .

() is a unique, edible, medicinal fruit rich in vitamin C found in Southwest China. Triadimefon (TDF) is a triazole fungicide that is widely used to control powdery mildew in . To assess the safety of TDF in , an LC-MS/MS method was developed for the simultaneous quantification of TDF and its major metabolite, triadimenol (TDN) in Both TDF and TDN showed high correlation coefficients (>0.999) for the solvent- and matrix-matched calibrations. The recovery rates of TDF and TDN in ranged from 90.18% to 100.42%, with a relative standard deviation () of 1.25%-9.22%. The limit of quantification () was 0.01 mg·kg. The half-life of TDF in was between 2.74 and 3.07 days, with terminal residues ranging from <  to 1.84 mg·kg. Recommended maximum residue limits (s) and safe pre-harvest intervals (s) for TDF in were 0.5 mg·kg and 21 days, respectively. This study provides essential data for TDF's safe and judicious use in production.