Authors: Soudamini Mohapatra M Deepa G K Jagdish N Rashmi Sampath Kumar G S Prakash
Publish Date: 2010/04/03
Volume: 84, Issue: 5, Pages: 587-591
Abstract
Fate of fipronil and its major metabolites fipronil sulfide MB 45950 fipronildesulfinyl MB 46513 and fipronil sulfone MB 46136 were studied in/on grape leaves berries and soil As initial residue deposits on the leaves the major component was that of fipronil while all the 3 metabolites were also present Among metabolites residues of MB 46513 was highest followed by MB 46136 and MB 45950 In leaves fipronil degraded faster than its metabolites The residues of fipronil in leaves degraded at the halflife of 96 and 183 days and that of total fipronil sum of fipronil and its metabolites at 136 and 20 days from treatment at recommended and double the recommended dose respectively At the time of harvest in leaves grape berries and soil residues of fipronil and all its metabolites were below the quantifiable limit of 001 mg kg−1
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