Determination of Imidacloprid and Tetraconazol Residues in Cucumber Fruits

The experimental design was a complete randomized blocks design with two treatments for imidacloprid and tetraconazole in addition to control. Each treatment includes three replicates. The application was carried out using knapsack sprayer equipped with one nozzle. Its residues on and in cucumber fruits collected after one hour, 1, 3, 5, 8, 11, 15 and 21 days from last spray were lower than the maximum residue limit (MRL) of imidacloprid and tetraconazole on cucumber fruits. The results obtained revealed that the residual level of imidacloprid was less than the maximum residual level (MRL=1 mg/kg) which recommended by Codex Alimentration Commission, and the residual level of tetraconazole was less than the maximum residual level (MRL=0.2 mg/kg) which recommended by Codex Alimentration Commission. Also, the results showed that tetraconazole high persistence (t1/2=1.4 days) than imidacloprid (t1/2=2.2 days) on cucumber fruits.