Blueberry scorch virus (BISV) is a plant disease of
blueberries (Vaccinium spp.) and cranberries (V. macrocarpon) as well as other
Vaccinium species.
Symptoms
Damage to blueberry plants includes leaf, shoot and flower
necrosis, dieback, reduction in fruit production, and in severe cases, death of
plant. Cranberries are symptomless. Symptoms can easily be confused with other
pest, disease, cultural or environmental problems. If BISV suspected, the
only reliable method to verify its presence is through laboratory testing. Once
infected, plants will permanently carry the virus. BISV is transmitted by
aphids, but can also be spread by propagation via an infected mother plant.
Certification for shipping
The following states require certification that blueberry nursery stock has been tested and found free of BISV:
The ODA provides virus testing to enable growers/shippers to obtain the necessary certification. Lab fees are charged for this service.
To obtain information about this program, please contact your nursery inspector or the following:
nursery@oda.oregon.gov; 503-986-4644