New tri-fold brochure Virus in Dahlias – Be Part of the Solution now available.
Our ability to detect and to control viruses in our dahlia gardens has improved dramatically over the last 20 years. Washington State University (WSU) has been at the heart of the research work that has made that progress possible. The American Dahlia Society has also been an integral part of the work at WSU throughout that period. Most recently, the Scheetz-Chuey Foundation has made it possible to sponsor a permanent Chair for Dahlia Research and Development at WSU and to create a Dahlia Resource Center there. These investments are providing the bases for a rapid increase in our understanding of dahlia viruses and of the best ways to control virus in our gardens.
An ADS Virus Team is working with WSU to coordinate virus testing in member dahlia gardens and in communicating test results and control techniques to our dahlia growers. With the cooperation of Professor Pappu at WSU and with the financial support of the Scheetz-Chuey Foundation, the testing of field dahlia plants started in 2015 and that work has grown steadily in volume, importance, and effectiveness over the years since.
Controlling Virus in Your Dahlia Garden
Perhaps the most important practical result achieved to this point has been the development of procedures to minimize the transfer of virus between clean and infected plants. See the new brochure and the article on that topic below: Virus in Dahlias – Be Part of the Solution. The key to success follows from adopting the habit of disinfecting the tools you use in managing your dahlias.
Start with Clean Stock
Another key conclusion evolving in the garden testing was on the importance of starting with clean plants. The March, 2019, ADS Bulletin article on Virus Results – 2018 demonstrates that a combination of virus-free stock and rigorous disinfecting practices can produce very low incidence of virus in your garden. Much of the current and future testing work is focused on improving our ability to routinely acquire clean stock. Until sources of clean stock become more readily available, it is very important that you retain only the healthiest looking plants for future stock.
The research at WSU has shown that thrips are an important source (technically, “vector”) for moving dahlia viruses among dahlias and between dahlias and many other virus host plants, like weeds! Two articles in the March, 2019, ADS Bulletin describe the role thrips play in that process, Thrips Control, and in Integrated Pest Management (IPM) approach to minimize thrips in our gardens: Using IPM Methods for Dealing with Major Insect Pests of Dahlias.
Dahlia Resource Center
The new Dahlia Resource Center at WSU will become an increasingly important vehicle both for informing dahlia growers about improvements in virus control and for guiding the direction of future research efforts. See the article in the December, 2018, ADS Bulletin, introducing Dr. Moyo, the Center Director. Current efforts include examining procedures for meristem tip culture to grow clean stock from contaminated plants.
Perhaps the easiest way to follow the progress of the practical virus work in our gardens is to read the Virus Results – 201x articles that appear in the March Bulletins. The articles summarize the previous summer’s virus projects and results.
Hide and Seek
Be aware that there are still more questions than answers in our efforts to understand dahlia viruses. Linda Taylor’s article on Hide & Seek Virus Testing addresses that issue specifically. One important area of lack of knowledge is the differences in the behavior of the six different viruses we’re following. See, for example, the end of the Virus Results –2018 article in the March 2019 Bulletin.
Following are the articles and presentations that summarize our work on viruses in dahlias.
|Virus Testing 2019||Article||June '19||ADS Bulletin||view|
|Virus Results - 2018||Article||Mar ' 19||ADS Bulletin||view|
|Integrated Pest Management||Article||Mar '19||ADS Web Site Document||view|
|The Little Dahlia that Could!||Article||Mar '19||ADS Bulletin||view|
|Thrips Control||Article||Mar '19||ADS Bulletin||view|
|Virus in Dahlia -|
Be Part of the Solution
|Virus in Dahlias - |
Become part of the Solution
|Article||Dec '18||ADS Bulletin||view|
|Greetings from the Dahlia Resource Center||Article||Dec '18||ADS Bulletin||view|
|Virus Research Status Update||Presentation||Sep '18||ADS National Show||view|
|Hide & Seek Virus Testing||Article||Jun '18||ADS Bulletin||view|
|Dahlia Testing - 2018 Plan||Article||Jun '18||ADS Bulletin||view|
|30-Year Battle Against Plant Viruses Leads|
to Humboldt Award for Pappu
|Article||Jun '18||WSU News||view|
|Summary of Virus Tests - 2017||Presentation||Apr '18||ADS Spring Meeting||view|
|Viruses and Insects - |
an Intricate Relationship
|Article||Mar '18||ADS Bulletin||view|
|Virus Analysis in Dahlias - 2017||Article||Mar '18||ADS Bulletin||view|
|Giant Boost for Dahlia R & D||Article||Dec '17||ADS Bulletin||view|
|Virus in Dahlia||Article||Dec '17||Dahlias of Today||view|
|Virus Research Update by Prof. Pappu - Part 1||Presentation||Sep '17||ADS National Show Chicago||view|
|Virus Research Update by Prof. Pappu - Part 2||Presentation||Sep '17||ADS National Show Chicago||view|
|A Visit to Washington State University||Article||Sept '17||ADS Bulletin||view|
|Virus Success Story - 2016||Article||Jun '17||ADS Bulletin||view|
|Virus Testing Plan for 2017||Article||Jun '17||ADS Bulletin||view|
|WSU Virus Research - Project Status||Presentation||Apr '17||ADS Spring Meeting||view|
|Virus Analysis in Dahlias - 2016||Article||Mar '17||ADS Bulletin||view|
|Controlling Virus in Your Dahlia Garden||Article||Sept '16||ADS Bulletin||view|
|Virus in Dahlia||Video||Summer '16||view|
|Now You Can test for Virus in Your Garden||Article||Jun '16||ADS Bulletin||view|
|Laboratory Testing for Virus in Our Dahlia Gardens||Article||Mar '16||ADS Bulletin||view|
|Virus Testing Results for Fall 2015||Article||Dec '15||ADS Web Site Document||view|
|Virus Frequently Asked Questions (FAQs)||Presentation||Sep '15||Midwest Show||view|
|Developing Virus Resistant Dahlias||Article||Sep '15||ADS Bulletin||view|
|How Virus Effects Dahlia Foliage||Brochure||Jun '15||ADS||view|
|ADS Interviews Dr. Hanu Pappu on the Appearance of Virus in Dahlias||Article||Jun '15||ADS Bulletin||view|