Gent, David H.; Nelson, Mark E.; Grove, Gary G.; Mahaffee, Walter F.; Turechek, William W.; Woods, Joanna L.(The American Phytopathological Society, 2012-09)
Downy mildew (caused by Pseudoperonospora humuli) and powdery mildew (caused by Podosphaera macularis) are important diseases of hop in the Pacific Northwest United States, and cultural practices may affect the severity ...
An important disease of Vitis vinifera production in Oregon and all other
commercial growing regions is powdery mildew of grape, caused by the obligate fungal
pathogen Uncinula necator (Schwein.) Burril. Grape producti ...
