Pesticide residues in tubers of some potato varieties grown in Egypt
2009
Darwish, S.M.I.
Pesticide residues in tubers of four potato varieties (Oceania, Pamina, Lady Rosetta and Lady Balfour) have been determined using gas chromatography-mass spectrometry. Twelve pesticide residues including insecticides (3 organophosphorus compounds - 3 organochlorines), herbicides (4) and fungicides (2) were analyzed in the samples. The obtained results showed the predominance of propamocarb (in a range of 0.551-0.987 mgkg-1) and Ethyl -N-benzoyle - (3, 4-dichlorophenyle)-DL-alinate (0.190-0.407 mgkg-1) in all of the analyzed samples. Unforturanatly, the concentrations of propamocarb detected in all potato varieties and dimethoate in Lady Rosetta samples (0.216 mgkgl) exceeded the maximum permissible levels (MPLs). Low levels of dinoseb acetate (0.0094-0.016 mgkg-1) were determined in the analyzed samples of Oceania and Pamina varieties. The results from the current study should stimulate the Ministry of Public Health to be interested in controlling the use of pesticides in the cultivation of potatoes.
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