Effect of strorage temperature on the physicochemical properties of bromuconazole fungicide formulation and on residues in cucumber fruits
2011
Radwan, O.A.
Bromuconazole fungicide formulation recommended to be used for pest control in Egypt was subjected to storage conditions at 54 °C for 3 and 14 days and at 72 °C for 3days. The effect of storage temperature on the chemical stability and the physical properties of Vectra (bromuconazole) were recorded. An IR analysis showed that the percentage match of bromuconazole formulation was more than 96% at different storage conditions. On the other hand, the results showed that the physical properties (Emulsification test) were not affected by all storage conditions. Cucumber plants were treated with the recommended rate of bromuconazole under the normal field conditions in the summer season . 2009 . The residue analysis showed that the initial deposits were 0.5995 ppm and 0.8627 ppm for bromuconazole L- 5850646 and bromuconazole L-5850647, respectively in cucumber fruits The percentage of loss was 53.59 and 81.92 % for bromuconazole L- 5850646 and bromuconazole L-5850647 , respectively in cucumber fruits determined one day after treatment The residual half life period in washed and unwashed cucumber fruits was 22.39 and 14.65 hours for 1 , 2 bromuconazole formulation respectively. Washing process was an effective method for value 0.2103 ppm for bromuconazole L5850646 while, bromuconazole L-5850647 was not detected as initial deposit residue on cucumber fruits. The pesticide residues were dissipated to different degrees, with the time elapsed after spraying .
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