Prothioconazole is a novel broad-spectrum systemic triazolinthione fungicide discovered by Bayer CropScience (Germany) in the 1990s and first registered and launched in Europe in 2004. It represents a significant upgrade among triazole fungicides.
Mode of Action:
Prothioconazole is classified as Group 3 by the Fungicide Resistance Action Committee (FRAC) and acts as a sterol demethylation inhibitor (DMI). Its active metabolite, prothioconazole-desthio, inhibits the biosynthesis of ergosterol in the cell membranes of pathogenic fungi, disrupting membrane structure, thereby inhibiting mycelial growth and spore production. It possesses excellent systemic translocation and acropetal movement capabilities.
Target Diseases and Application Scope:
Applicable Crops: Wheat, barley, rapeseed, peanuts, soybeans, and various fruit trees and vegetables.
Controlled Diseases: Highly effective against diseases caused by Ascomycetes, Basidiomycetes, and some Deuteromycetes, such as wheat Fusarium head blight, powdery mildew, rust, leaf blight, rapeseed sclerotinia stem rot, peanut leaf spot, as well as powdery mildew and alternaria leaf spot in fruit trees. It performs exceptionally well in controlling wheat Fusarium head blight.
Characteristics: Extremely broad fungicidal spectrum with protective, curative, and eradicant activity. Compared to traditional triazole agents, it has higher safety, very weak inhibitory effects on crop growth, and can significantly improve crop physiological functions, increasing yield and quality (such as increasing thousand-grain weight). It has a long residual period and is rainfast. It is often formulated with SDHI fungicides like fluxapyroxad to broaden the fungicidal spectrum and delay resistance.
Main Formulations:
Prothioconazole 480 g/L SC