Residue levels of four pesticides from two commercial formulations on gingers and their dietary intake risk assessment under open field conditions

Two commercial formulations, abamectin·fluopyram 10 % suspension concentrate (SC) and alpha-cypermethrin·chlorantraniliprole 10 % SC are under registration for application on gingers in China. In 2022, open field trials were conducted based on good agricultural practice (GAP) in four regions. Alpha-cypermethrin·chlorantraniliprole 10 % SC for controlling beet armyworm was used at the recommended registration label (dosage of 67.5 g a.i./ha, a pre-harvest interval (PHI) of 14d), and the abamectin·fluopyram 10 % SC for controlling root-knot nematodes was applied once by root irrigation (dosage of 600 g a.i./ha). The results indicated that the residues of abamectin B1a and fluopyram in gingers during harvest and cypermethrin and chlorantraniliprole in gingers on the recommended PHI were all lower than 10 µg/kg, which were also lower than their corresponding maximum residue limits (MRLs) in China (except for fluopyram with no MRL set in China). The chronic dietary risk quotients of abamectin, fluopyram, chlorantraniliprole, and alpha-cypermethrin for Chinese consumers were no higher than 51.39 %, and the acute dietary risk quotients of abamectin, fluopyram, and alpha-cypermethrin in ginger for the Chinese general population were no higher than 4.06 %. Therefore, the two formulations used on gingers according to the recommended GAP information have no dietary risk on Chinese consumers. •Open field trials using two commercial formulations were conducted on gingers.•Pesticide residues were lower than 0.01 mg/kg in ginger samples.•Chronic and acute dietary risk were acceptable for Chinese consumers.