Grape Powdery Mildew sprays needed

"The wet conditions over the weekend have most certainly resulted in a primary infection of grape powdery mildew. Fungicides should be applied ... Good spray coverage is important, including on new shoots being trained up from the ground. Do NOT skip powdery mildew (or other pest/disease) control even in situations where most or all vines have been killed to the ground - excessive powdery mildew infection will reduce winter hardiness of your shoots/vines, increasing the risk of future cold injury." Info from Dr Horst Caspari,State Viticulturist, Colorado State University

See http://www.ext.colostate.edu/pubs/garden/02902.html for more information on this disease and fungicides you can use to manage this fungal disease.