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Articles

Persistence, dissipation and consumer risk assessment of a combination formulation of flubendiamide and deltamethrin on cucumber

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Pages 498-511 | Received 02 Jun 2017, Accepted 16 Oct 2017, Published online: 17 Jan 2018
 

ABSTRACT

Multi-location supervised field trials were conducted in India at four locations of the All India Network Project (AINP) on Pesticide Residues to study the persistence, dissipation and risk assessment of flubendiamide and deltamethrin on cucumber (Cucumis sativus). Residues of flubendiamide and deltamethrin on cucumber resulting from three spray applications of a combination formulation (flubendiamide 90% + deltamethrin 60%, 150 SC) at recommended (22.5 + 15 g a.i./ha) and double the recommended (45 + 30 g a.i./ha) dose were analysed. On the basis of persistence and dissipation studies, the half- life (T1/2) of flubendiamide on cucumber varied from 1.40 to 2.98 (recommended dose) and 1.55 to 2.76 days (double the recommended dose), while that of deltamethrin ranged from 2.5 to 4.9 (recommended dose) and 2.7 to 3.9 days (double the recommended dose) at the four locations. On the basis of supervised field trial data and using OECD calculator, MRLs in the combination product of 3 mg kg−1 for flubendiamide and 1.5 mg kg−1 for deltamethrin has been proposed for consideration by the Food Safety and Standards Authority of India (FSSAI). Codex, EU and EPA have fixed MRL of 0.2 mg kg−1 for flubendiamide and deltamethrin.

Acknowledgments

The authors are thankful to Indian Council of Agricultural Research (ICAR), India for providing necessary infrastructure and facilities for conducting the study, and M/s Bayer Crop Sciences Ltd. for sponsoring multi-location supervised field trials.

Disclosure statement

No potential conflict of interest was reported by the authors.

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