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  • Title: Persistence evaluation of fluopyram + tebuconazole residues on mango and pomegranate and their risk assessment.
    Author: Tripathy V, Sharma KK, Mohapatra S, Siddamallaiah L, Matadha NY, Patil CS, Saindane YS, Deore B, Rao CS, Parmar KD, Litoriya NS, Shah PG, Sharma K.
    Journal: Environ Sci Pollut Res Int; 2022 May; 29(22):33180-33190. PubMed ID: 35022971.
    Abstract:
    The persistence of combination formulation of fluopyram 200 + tebuconazole 200-400 SC was evaluated across different agro-climates in India for the management of fungal diseases in two commercially important fruit crops, mango and pomegranate. The residues were extracted using quick easy cheap effective rugged and safe (QuEChERS) method and quantification was done on liquid chromatography-tandem mass spectrometry (LC-MS/MS). The fungicide degradation followed 1st-order kinetics and the half-lives were 2.9-6.4 days for mango, and 3.5-7.4 days for pomegranate for both the fungicides. On the basis of Organisation for Economic Co-operation and Development (OECD) maximum residue limit (MRL) calculation, 1.0 mg kg-1 MRL was obtained for fluopyram while for tebuconazole, it was 0.5 mg kg-1 on mango, at the pre-harvest interval (PHI) of 5 days. For pomegranate, the respective MRLs were 1.0 mg kg-1 and 0.7 mg kg-1 at PHI of 7 days. The dietary risk assessment study indicated that % acceptable daily intake (% ADI) and % acute reference dose (% ARfD) were much lower than 100; thus, the application of fluopyram and tebuconazole on mango and pomegranate is unlikely to present public health concern.
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