Biological study of fungicides for downy mildew control in melons (Cucurbitaceae Family)
Atanas Ivanov, Elitsa Kolentsova, Rumyana Prodanova

Abstract: Downy mildew (Pseudoperonospora cubensis) is a serious pathogen that causes significant damage to cucurbit crops, including melons. Research on downy mildew is particularly important in the context of increasing environmental regulations and pursuing sustainable agriculture. The present study aims at investigating the efficacy of fungicidal products and their impact on yields under field conditions in Bulgaria. The highest level of disease control was achieved with the application of a combination of Fluoxapiprolin at 0.75 L/ha and Cyazofamid at 0.5 L/ha, resulting in maximum disease suppression and high yield.
Keywords: cyazofamid; fluoxapiprolin; fungicides; mandipropamid; plant protection; Pseudoperonospora cubensis
Citation: Ivanov, A., Kolentsova, E. & Prodanova, R. (2026). Biological study of fungicides for downy mildew control in melons (Cucurbitaceae Family). Bulg. J. Agric. Sci., 32(2), 356–367
| References: (click to open/close) | European Commission (2021). Common Agricultural Policy 2023 - 2027: Support for European farmers. https://ec.europa.eu. European Commission (2022). Regulation on rural development funding for climate and environment. https://ec.europa.eu. Gao, Y., Zhao, X., Sun, X., Wang, Z., Zhang, J., Li, L., Shi, H. & Wang, M. (2021) Enantioselective Detection, Bioactivity, and Degradation of the Novel Chiral Fungicide Oxathiapiprolin. Agricultural and Environmental Chemistry, 69(11), 3289 - 3297. Li, Ch.,Tian, S., Fu, Y., Li, Y., Miao, J., Peng, Q. & Liu, X. (2024). Activity of OSBPI fungicide fluoxapiprolin against plant-pathogenic oomycetes and its systemic translocation in plants. Pesticide Biochemistry and Physiology, 204, 106085. Miao, J., Dong, X., Lin, D., Wang, Q., Liu, P., Chen, F., Du, Y. & Liu X. (2016) Activity of the novel fungicide oxathiapiprolin against plant-pathogenic oomycetes. Pest Management Science, 72(8), 1572 - 1577. Mikova, N., Ivanov, G. & Staneva, A. (2022). Trends in melon production and marketing in Bulgaria. Agricultural Economics and Management, 67(4), 35 - 42. Mitani, S. (2001). Cyazofamid, a novel fungicide for controlling Oomycete plant diseases. Pesticide Outlook, 12(4), 166 - 169. Pasteris, R. J., Hanagan, M. A., Bisaha, J. J., Finkelstein, B. L., Hoffman, L.E., Gregory, V., Andreassi, J. L., Sweigard, J. A., Klyashchitsky, B. A., Henry, Y. T., Berger, R. A. (2016). Discovery of oxathiapiprolin, a new oomycete fungicide that targets an oxysterol binding protein. Bioorganic & Medicinal Chemistry, 24(3), 354 - 361. Petrova, Y. (2024). Melon cultivation in Bulgaria: Economic and agro-environmental perspectives. Bulgarian Journal of Agriculture, 81(1), 12 - 20. ReportLinker. Global Melons Production by Country. Metric Tons 2023. Retrieved from https://www.reportlinker.com/dataset/a0495cccd8f317070b99bf8305fdec829bb55eb7. Savory, E. A., Granke, L. L., Quesada-Ocampo, L. M., Varbanova, M., Hausbeck, M. K. & Day, B. (2010). The cucurbit downy mildew pathogen Pseudoperonospora cubensis. Molecular Plant Pathology, 12(3), 217 - 226. Serrati, L. & Cestari, P. (2006). Mandipropamid: new fungicide against Oomycete phytopathogens [Vitis vinifera L.; Solanum tuberosum L.; Lycopersicon esculentum Mill.; Cucumis melo L.; Lactuca sativa L.; Italy]. Atti delle Giornate Fitopatologiche, 9 - 16. Singh, N. & Tandon, S. (2015). Dissipation kinetics and leaching of cyazofamid fungicide in texturally different agricultural soils. Int. J. Environ. Sci. Technol., 12, 2475 - 2484. |
|
| Date published: 2026-04-29
Download full text