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 of both diseases. The association of spring pruning quality and timing with severity of downy mildew and powdery mildew...
Objective for 2008 and Accomplishments: The purpose of this proposed research is to determine whether ascospores of S. sclerotiorum can be detected in experimental bean plantings by polymerase chain reaction (PCR).
Objectives for 2009:
1. Evaluate ascospore detection of S. sclerotiorum using multiple Rotorod spore traps.
2. Monitor environmental conditions within bean fields to begin model development of ascospore detection events.