HERBICIDE RESIDUE DETERMINATIONS AND TAINT TESTS ON FRUIT FROM GOOSEBERRIES TREATED WITH CHLORTHIAMID AND DICHLOBENIL |
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| Authors: | C. E. McKONE R. J. HANCE D. J. BURCHILL |
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| Affiliation: | ARC Weed Research Organization, Begbroke Hill, Yarnton, Oxford, England; The Fruit and Vegetable Preservation Research Association, Chipping Campden, Glos., England |
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| Abstract: | Fruit harvested from gooseberry plots treated with up to 33·6 kg/ha of chlorthiamid and dichlobenil (applied at two dates) was examined for the presence of residues of 2,6-dichlorobenzonitrile together with the possible metabolites, 2,6-dichlorobenzamide and 2,6-dichlorobenzoic acid. In addition the canned fruit was examined for taint. Residues of 2,6-dichlorobenzonitrile resulting from the application of both herbicides at all rates were below 0·05 ppm. Residues of 2,6-dichlorobenzamide ranged from 0·13 to 0·45 ppm with the greatest residues occurring in fruit from plots treated with the highest amounts of chlorthiamid in March. Fruit from some of the March applications of both herbicides contained residues of up to 0·16 ppm 2,6-dichlorobenzoic acid. No taints were found in the canned fruit. |
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