Dimethomorph is a cinnamic acid derivative and a member of the morpholine chemical family. Dimethomorph is a mixture of E- and Z-isomers in the ratio of about 1:1 and only the Z-isomer has the fungicidal activity. It fungicidal activity works by the inhibition of sterol (ergosterol) synthesis.
Dimethomorph is a systemic fungicide to protect against various fungal pathogens in vines and other crops. Dimethomorph is used to against downy mildews, late blights, anthracnose, septoria leaf spot, crown rot, and root rot for curbubits, grapevines, head lettuce, onions, potatoes, tomatoes, and fruit including blackberries, raspberries, strawberries.
