Department of Chemistry and Physics, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125 004, India
*Corresponding author E-mail: beenakumari.958@rediffmail.com; beena@hau.ernet.in
Online published on 6 November, 2015.
Persistence behaviour of fipronil in chilli following application of Regent 5% SC (commercial formulation) @ 50 and 100 g a.i.ha−1 at fruiting stage is reported. The average initial deposits of total fipronil (fipronil and its metabolites) were 0.409 and 0.808 mg kg−1 for single and double doses, respectively. Desulfinyl was the main metabolite followed by sulfone and sulfide. Half-live for total fipronil were found to be 3.50 and 3.53 days at single and double doses, respectively. A waiting period of 7 days for single and 10 days for double doses has been suggested for safe consumption of chilli.
Fipronil, residues, GLC, GC-MS, processing, half-live periods, chilli
