Residues of plant protection products (PPPs) are inevitably present in or on food, even when they are applied in line with good agricultural practice. The upper limit of residue permitted on food or feed is the ‘maximum residue level’ (MRL), which, in Europe, is legislated by the European Commission based on scientific advice from the European Food Safety Authority.
MRLs are measured via crop residue field trials, which replicate the real-life agricultural conditions under which a plant protection product would be used. It sounds a simple enough procedure, but what studies are commonly used and what are the secrets to success?
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