Development of Management Strategies for Hop Powdery Mildew in the Pacific Northwest

Fig. 5. Relationship between incidence of hop cones with powdery mildew and the seasonal average of powdery mildew incidence on leaves. Data was collected from commercial hop fields in Washington and Oregon in 1999 and 2000. Data are plotted on logarithmic axes to achieve better separation of the data at lower incidences.



Image from Plant Health Progress article:
Development of Management Strategies for Hop Powdery Mildew in the Pacific Northwest