Cheminova is a manufacturer of fine chemicals, with its main business area within plant protection products. Cheminova offers Instinct® is the brand name for Cheminova products based on fenpropidin. The product is a systemic fungicide with good preventive and curative action. It is mainly used for control of powdery mildew [Erysiphe graminis] in cereals.
Fenpropidin works by the inhibition of the ergosterol biosynthesis in the fungus at a different biochemical stage from the triazole fungicides. There is no cross-resistance to triazoles and the product remains effective where some resistance to triazoles has developed in powdery mildew populations.
