LEXINGTON, Ky. — There are several virus diseases that can affect strawberry. They occur rarely or infrequently, but transmission via imported cuttings can occur. This fall, we have seen suspect viruses in planting stock.
The viruses strawberry mottle virus (SMoV) and strawberry mild yellow edge virus (SMYEV) have been an infrequent problem in strawberry production in the past. Introduction typically occurs from infected plugs. Once infected plants are confirmed, these diseases can have devastating effects. Viruses result in systemic infections, meaning that all parts of the plant are infected. All infected material should be removed and destroyed. There are no treatment methods for infected plants, so prevention of additional infections is critical.
SMoV and SMYEV Facts
Figure 2: Marginal leaf scorch is one possible symptom of strawberry mild yellow edge virus. (Photo: Nicole Ward Gauthier, UK)- Symptoms of these viruses can include chlorosis (Figure 1), leaf distortion, marginal leaf scorch (Figure 2), and red or orange coloration. Infected plants may be stunted or show decline after planting. Yield loss can also result from virus infection.
- Transmitted by aphids.
- SMYEV infects only strawberry, but SMoV can also infect the weed, common lambsquarters.
Disease Prevention Techniques
- Begin with clean plant material purchased from reputable suppliers.
- Remove any diseased plant material as soon as possible.
- Scout regularly for symptomatic plants.
- Manage aphid populations.
- Implement a weed management program.
Additional Information
- IPM Scouting Guide for Common Problems of Strawberry in Kentucky (ID-238)
- Strawberry Scout Website (Link)
Click here to visit the University of Kentucky Pest News blog.
— Kim Leonberger, University of Kentucky Extension Associate and Nicole Ward Gauthier, Extension Plant Pathologist
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