Residual behaviour and risk assessment of flubendiamide on Chickpea (Cicer arietinum L.)

The study was undertaken to determine the disappearance trends of flubendiamide residues on chickpea under field conditions and thereby, ensure consumer safety. Average initial deposits of flubendiamide on chickpea pods were found to be 0.68 and 1.17 mg kg−1, respectively, following three applications of flubendiamide 480SC @ 48 and 96 g a.i. ha−1 at 7 d intervals. Half-life of flubendiamide on chickpea pods was observed to be 1.39 and 1.44 d, respectively, at single and double dosages whereas with respect to chickpea leaves, these values were found to be 0.77 and 0.86 d. Desiodo flubendiamide was not detected at 0.05 mg kg−1 level on chickpea samples collected at different intervals. Theoretical maximum residue contribution (TMRC) for flubendiamide was calculated and found to be well below the maximum permissible intake (MPI) on chickpea pods and leaves at 0-day (1 h after spraying) for the both dosages. Thus, the application of flubendiamide at the recommended dose on chickpea presents no human health risks and is safe to the consumers.

► Theoretical maximum residue contributions on chickpea pods was less than estimated maximum permissible intake value. ► Half-life values for flubendiamide on chickpea pods were 1.39 and 1.44 d at single and double dosages, respectively. ► Application of flubendiamide at the recommended dose on chickpea is quite safe for consumers and environment friendly.