author(s)
Athulya R, BK Kang and Sanjay K Sahoo

abstract
Supervised field trials were conducted in Ludhiana, Punjab for residue studies of diafenthiuron on brinjal and cabbage. Three spray applications of diafenthiuron at were made 10 day’s interval @ 300 and 600 g i.e. ha^-1. The brinjal and cabbage samples were collected from field on 0 (2 hours) and 1 day after the second and third application for conducting decontamination studies. Both processed and unprocessed samples were analysed for diafenthiuron residues. The samples were made using Quenchers technique, quantified by using high performance liquid chromatography (HPLC) with photo diode array (PDA)detector and confirmed by LC-MS. Various household processing like washing removed 80.76 -100% residue from brinjal and 66.66% from cabbage, while boiling of brinjal and cabbage substantially reduced diafenthiuron residues upto 100%. Both processing methods reduced the residues of diafenthiuron to a level of less than 1 mg kg^-1 fixed by FSSAI.