Dissipation Behavior of Thiophanate-Methyl in Apple and Strawberry Fruits under Open Field Conditions | ||
| Alexandria Science Exchange Journal | ||
| Article 5, Volume 38, January-March - Serial Number 1, March 2017, Pages 38-43 PDF (348.31 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/asejaiqjsae.2017.1653 | ||
| Authors | ||
| Dalia E. El-Hefny1; Rania M. Abdel-Hamid2; Maher S.Salma3 | ||
| 1Pesticide Laboratory, Agricultural Research Center, Dokki, Giza, Egypt. | ||
| 2Pesticide Laboratory, Agricultural Research Center, Dokki, Giza, Egypt | ||
| 3Pesticide Chem. and Technology, Fac.of Agric., Alexandria Universty, Egypt | ||
| Abstract | ||
| Thiophanate-methyl is an effective fungicide on several food crops. In the present study, dissipation of residue levels of thiophanate-methyl in apple and strawberry fruits under open field conditions were studied using high performance liquid chromatography with diode array detection (HPLC-DAD).The extraction and clean-up were conducted by QuEChERS method. The limit of quantitation and detection were 0.01 and 0.003 mg/kg, respectively. The results suggest that the thiophanate-methyl dissipation curves followed the first order kinetics and its half-life values were (1.01) and (1.26) days for apple and strawberry, respectively. The residues in apple and strawberry were below the codex maximum residue limit (MRL) (0.5 and 0.1 mg/kg) after 8 and 4 days of the application, respectively. | ||
| Keywords | ||
| residues; Thiophanate-methyl; Apple; strawberry | ||
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