Plasmopara viticola in grapevines and its control

The downy mildew(Plasmopara viticola) in grapevines is a world fungal disease with its badly high effects on the yield and quality of grape.Especially for the rainy climate in recent years,throughout the main viticultural regions it was more epidemic and affected badly.Therefore,the pathogenetic conditions,symptoms,cycles of infection of Plasmopara viticola together with the therapies were presented in detail,in order to work for our production.