Persistence and Dissipation of Fen valerate Residue on Chickpea

Persistence and dissipation of fenvalerate in chickpea is reported following its appllcation @ 110 and 200 g a.i. ha⁻¹. The initial deposiis in green pods were 1172 and 3.62 mg kg⁻¹ in low and high doses respectively. These dissipated with half-life of 7.2 to 8.1 d to the extent of 78.49 and 74.31% respectively in 15 days. The safe waiting periods were found to be.5 6 and 15.1 d for the two treatments. At harvest, residues of fenvalerate in chickpea grains, dry pod covers and straw were 0.02, 0.31 and 0.52 mg kg⁻¹ in low dose and 0.04, 0.57 and 0.84 mg kg⁻¹ in high dose respectively and were below the maximum residue limit.