Wanted: Samples of Powdery Mildew on Hops

Nancy Gregory, Plant Diagnostician; ngregory@udel.edu

Samples Wanted: Powdery Mildew on Hops has not been confirmed in Delaware. Bill Weldon, a graduate student at Cornell University, is tracking the dispersal of this fungal disease across the US. There are “male” and “female” strains of the pathogen, and it’s important to everyone that we know where they are located, because it is relevant to how we control the disease. Contact the UD Plant Diagnostic Clinic and send in a sample if you encounter powdery mildew in your hop yard this season. All grower-specific information will remain confidential.