Recently Introduced Powdery Mildew Fungicides

Abstract

Powdery mildew pathogens continue to infest a large number of field and specialty crops. Cyflufenamid, a benzamidoxime fungicide, has been introduced in the market as a powdery mildewcide for fruits, vegetables, and cereals. Cyflufenamid shows both preventative and curative activity on powdery mildew pathogens in cereals and specialty crops. Metrafenone provides excellent preventative, curative, and residual activity against powdery mildew pathogens in cereals, grapes, and vegetables. Pyriofenone is the newest powdery mildewcide from the benzophenone class. Proquinazid, the first fungicide belonging to the quinazolinone class, has been introduced as a potent preventative powdery mildewcide for the cereal and the grapevine markets. Proquinazid acts in a preventative manner and does not show a significant curative activity against powdery mildew pathogens. According to literature, flutianil can be synthetically accessed by a multistep procedure starting from an appropriately substituted aniline.