TY - JOUR AU - Božić, Vladimir AU - Vuković, Slavica AU - Grahovac, Mila AU - Lazić, Sanja AU - Aleksić, Goran AU - Šunjka, Dragana PY - 2021/04/25 Y2 - 2024/03/19 TI - Fungicide application and residues in control of Blumeriella jaapii (Rehm) Arx in sweet cherry JF - Emirates Journal of Food and Agriculture JA - Emir J Food Agric VL - 33 IS - 3 SE - Research Article DO - 10.9755/ejfa.2021.v33.i3.2659 UR - https://ejfa.me/index.php/journal/article/view/2659 SP - 253-259 AB - <p>To minimize harmful effects of the fungicide application in sweet cherry orchards, it is necessary to use them in accordance with the good agricultural practice and to monitor presence of their residues. Cherry leaf spot caused by <em>Blumeriella jaapii</em> is a significant sweet cherry disease which control is heavily dependent on fungicide treatments. In this study, effects of fungicide treatments against <em>B. jaapii</em> and fungicide residues remaining in sweet cherry fruits after the treatments were evaluated, and the causal agent of cherry leaf spot was confirmed on cherry leaves from untreated control plots using conventional phytopathological techniques (isolation on nutrient media and morphological traits of developed fungal colonies). The trial was set up at two localities in south Serbia (District of Niš), in sweet cherry orchards, according to EPPO methods. Fungicides tested against <em>B. jaapii</em> were based on dodine (650 g a.i./kg) WP formulation, at concentration of 0.1% and mancozeb (800 g a.i./kg) WP formulation, at concentration of 0.25%. During the trial, two evaluations were carried out. Fungicide efficacy was determined according to Abbott. The obtained data were statistically processed by ANOVA and LSD test. In both sweet cherry orchards high efficacy in control <em>B. jaapii</em> was registered in case of dodine application efficacy of 96.3-98.9%, while mancozeb showed slightly lower efficacy of 91.0-95.6%. The results of the dissipation dynamic suggest that the dodine dissipation curves followed the first-order kinetic (Ct=6.23<sup>e−0.09</sup>, with <em>R<sup>2</sup></em>=0.986) and its half-life in sweet cherry fruits was 7.7 days. The final residues in sweet cherry fruits were below the MRL (3 mg/kg) 21 days after the application. The results indicate that sweet cherry fruits can be safely consumed after dodine based fungicides applications at the recommended rate.</p> ER -