Dislodgeable foliar residue (DFR) studies quantify pesticide residues that can be dislodged from treated foliage onto human skin. DFR data is an important tool in estimating the exposure of workers, residents and bystanders to plant protection products.
However, differences in trial design, application methods, leaf sampling, dislodging procedures, recovery adjustment and derivation of exposure-relevant metrics can limit the comparability and interpretability of DFR data.
CropLife Europe has developed guidance to support scientifically robust, representative and practically deliverable DFR studies. The guidance brings together a pragmatic interpretation of relevant European Food Safety Authority (EFSA) principles with established methods and industry expertise. It addresses the complete chain from field design through to derivation of DFR and dissipation parameters that can be used in risk assessment.
The guidance is intended to promote consistent study conduct and reporting while retaining scope for justified case-specific adaptation.
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