In this study, foliar sprays of Fenton solutions (Fenton reaction, Fenton-like reaction and Fenton complex), titanium dioxide
(TiO2) and the recommended fungicide (chlorothalonil) were estimated in the control of sugar beet leaf spot caused by Cercospora beticola
under field conditions in two growing seasons. In addition, the impacts of these treatments on some crop characters (leaf dry weight,
root fresh weight, soluble solid content, sucrose content and purity of sugar) were examined. Biochemical and histological changes in
the livers and kidneys of treated rats compared to an untreated control were utilized to assess the toxicity of the examined curative
agents. Overall, chlorothalonil and Fenton complex were the most effective treatments for disease suppression in both tested seasons
followed by Fenton-like reagent, Fenton’s reagent and TiO2, respectively. Growth and yield characters of treated sugar beet significantly
increased in comparison to an untreated control. There were mild or no (biochemical and histological) changes in the livers and kidneys
of treated rats compared to the control. Fenton solutions and TiO2 may offer a new alternative for leaf spot control in sugar beet.
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