Potato fungicides11/28/2023 ![]() ![]() In case mixtures cannot be applied for regulatory reasons, apply CAA fungicide in strict alternation.CAA fungicides must be used in mixtures, with not more than 2 consecutive applications.In regions with reported cases of resistance: CONS OF FUNGICIDES Fungicides also show negative effects in our environment and decline in the number of soil fungi. consider to plant resistant varieties and refer to disease prediction models. Carbendazim (systemic fungicide) and mancozeb (dithiocarbamate, contact fungicide) were widely used to control fungal diseases of many plants particularly Mancozeb, in the initial vegetation stages4,6. Good agricultural practices must be considered to reduce source of inoculum, disease pressure and resistance risk, e.g.Alternation with fungicides having other modes of action is recommended in spray programs.Apply CAA fungicides preferably in mixtures with effective partners belonging to different modes of action.Apply CAA fungicides using not more than 2 consecutive applications.Apply CAA fungicides always at recommended dose rates.Apply a maximum of 50% of the total number of intended applications for late blight control.Apply CAA fungicides preferably in a preventive manner.For effective resistance management a precautionary strategy has to be implemented. Long-term experience with CAA fungicides demonstrates that the resistance risk of Phytophthora infestans to this fungicide group is low to moderate. Phytophthora infestans is classified by FRAC as a medium risk pathogen. Alternation with fungicides having other modes of action is recommended in spray programsįor more detailed product recommendations refer to the use guidelines published by the respective CAA manufacturers.An effective partner for a CAA fungicide is one that provides satisfactory disease control when used alone at the mixture rate.Always apply CAA fungicides in mixture with effective partners such as multi-site or other non-cross resistant fungicides.In areas of high resistance, the total number should not exceed a maximum of 3 applications during one crop cycle Apply a maximum of 50% of the total number of intended applications for disease control not exceeding a total of 4 CAA fungicide sprays during one crop cycle.Long-term experience with CAA fungicides demonstrates that the resistance risk of Plasmopara viticola to this fungicide group is moderate and can be managed through appropriate use strategies. Plasmopara viticola is classified by FRAC as a high risk pathogen. ![]()
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