Virus Diseases of Dahlia
Dahlia Home
What are Viruses?
Viruses of Dahlias
How do virus diseases look?
Important Dahlia Viruses
Virus Symptoms
How do Dahlia viruses spread?
  Role of planting material in virus spread
Disease spread by physical contact and wounding


How to control Dahlia viruses?
How important is vector control?
What help is available for virus identification?



Viruses cannot spread without help. Unfortunately, help for the virus is often at hand because many things that are done during dahlia cultivation increase virus spread. There are 3 ways that viruses can be introduced and spread throughout a planting:

  1. Vectors - insects such as aphids, thrips, nematodes and fungi
  2. Virus infected or contaminated seed, tubers and plants
  3. Spread by physical contact and wounding
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