This study was carried out to investigate residual characteristics of triflumizole in water dropwort and shallot under greenhouse conditions. The 2,000 time-diluted solutions of the test commercial pesticide (30% WP) were sprayed three times with a 7-day interval with different spraying days before harvest onto the test crops at an application rate of about 200 L per 10 a and then samples were collected on the day of harvest. Limits of quantitation of triflumizole residues in the test crops as analyzed with an HPLC/DAD were 0.03 mg/kg. Recoveries of triflumizole in water dropwort and shallot were 75.3-80.7 and 74.6-80.0%, respectively. No residue change were observed from samples during sample storage periods. Residual concentration of triflumizole in water dropwort and shallot were 0.76-5.32 and 0.27-2.76 mg/kg, respectively. Residue level of water dropwort was higher than that of shallot because of characteristics of the test crops such as specific surface area and morphological properties. The estimated daily intakes of the test pesticide in two test crops were less than 1.0% of its acceptable daily intake.

Residual characteristics of triflumizole in water dropwort and shallot

256th National Meeting (2018)

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