The estimation of surface residues of benomyl on treated bananas

A simple rinsing technique for the extraction of benomyl residues present on the skin of bananas, a microbiological assay and a u.v. spectrophotometric assay for its estimation are described. Use of these in a persistence study with benomyl on bananas showed good recovery by both methods. Preliminary work on plantation-treated bananas revealed that the benomyl was persisting unchanged and not decomposing to any appreciable extent during ripening and storage of the fruit.