Skip to main content Skip to navigation

Loading Events

« All Events

  • This event has passed.

X-disease and Little Cherry Virus: Webinar

January 21 @ 9:00 am - 10:30 am

View Print Version

Join us for a comprehensive look at the newest research and recommendations for control of X-disease and Little cherry virus.

This event is part of Cherry Institute co-sponsored by NW Cherry Growers.


  • Symptoms and Sampling.
  • New biology information: symptom types and biological effects per-variety.
  • Vector ID, biology and management.
  • New vector management study results: cultural controls Extenday and Surround.
  • New vector management pesticide trial efficacy results.
  • Tree removal case studies.


Scott Harper is an Assistant Professor for WSU Department of Plant Pathology. His research program focuses on viruses and other systemic pathogens of perennial crops in the Pacific Northwest.

Tobin Northfield is an Assistant Professor for WSU Department of Entomology. He leads an interdisciplinary task force comprising researchers and representatives from government and industry that works to improve management X-disease and Little cherry disease. He leads a project focusing on X-disease vector management including the use of cultural controls such as Surround and Extenday.

Louis Nottingham is a Research Assistant Professor for WSU Department of Entomology. His lab works to improve insect and mite pest management practices in commercial tree fruit orchards. Topics include insect behavior, phenology, biological control, cultural control, and chemical control.

Tianna DuPont is a Tree Fruit Extension Specialist. Her work focuses on helping growers understand and apply research based solutions for tree fruit pests and pathogens.


To register visit


This session will qualify for one Washington/Oregon pesticide re-certification credit with WSDA approval. To receive credit attendees must attend the entire 50 min seminar and participate in polls within the session.

Tree Fruit Days Webinar Series

This webinar is part of the Tree Fruit Days Webinar Series co-sponsored by WSU Extension, NW Cherry Growers, Okanogan Hort Assoc., Pear Bureau NW, NCW Fieldmen’s Assoc.

For additional educational opportunities see and the WSU Winter Institute


January 21
9:00 am - 10:30 am


WSU Extension – Tianna DuPont
(509) 293-8758
Washington State University