Benomyl residues in litchis after post-harvest dipping

Abstract

Benomyl residues in litchis were determined at 2, 5, 9 and 15 d after a commercial postharvest dipping treatment at a level of 422 mg/litre. Residues were analysed in skin and flesh separately with 1.3 mg/kg benomyl being the highest flesh residue and 20.6 mg/kg the highest skin residue (average values from duplicate determinations). The benomyl levels showed no significant difference with time (P> 0.05) in either flesh or skin. Residues are also reported for a double recommended strength treatment. After consideration of these data the relevant authorities have set a maximum residue limit of 10 mg/kg for benomyl in litchi.