W. Pscheidt, Extension plant pathology specialist, Oregon State University. M. ummy berry is a blueberry disease caused . The fungus often enters the blueberry (Vaccinium spp.) Jersey) fields. Blueberry scorch virus (BBScV) is a plant disease of blueberries (Vaccinium spp.) In Michigan, shoestring is common in old blueberry (cv. Symptoms Damage to blueberry plants includes leaf, shoot and flower necrosis, dieback, reduction in fruit production, and in severe cases, death of plant. Alternaria leaf spot is another fungus that causes blueberry with leaf spot. and cranberries (V. macrocarpon) as well as other Vaccinium species. Scorch, caused by the blueberry scorch virus (BlScV) is a serious disease in the Pacific Northwest (Oregon, Washington, and British Columbia) and New Jersey, where it is also known as Sheep Pen Hill disease. Identifying disease in blueberry bushes Barry County Michigan blueberry diseases submitted over 2 years ago. Blueberry stunt phytoplasma – Stunt is a devastating systemic bacterial disease of blueberry in North and South Carolina This disease has been reported from Arkansas but has not been observed in Georgia. Includes. It doesn’t do significant damage to a blueberry patch, however. Azalea bark scale (Eriococcus azaleae) Lecanium scale (Lecanium spp.) Six other virus and virus-like diseases of highbush blueberry occur in the Eastern States but either have not been reported or are uncommon in the Pacific Northwest: Blueberry leaf mottle virus, Peach rosette mosaic virus, Blueberry shoestring virus, Blueberry necrotic ring blotch virus, Blueberry virus A, and the Stunt Phytoplasma. Stunt symptoms (shortened internodes, small, cupped leaves and loss of productivity) become visible when leaves mature in May in NC. This animation depicts the 9 year spread of the Blueberry shock virus (BlShV) through a half acre of susceptible highbush blueberry plants. This disease is prevalent throughout the Pacific Northwest, west of the Cascade Mountain Range, affecting the northern highbush blueberry (Vaccinium corymbosum) indus-try. Symptoms In general, insects and diseases are not a big problem for blueberries. Wet, warm conditions are ideal for fungal diseases to thrive. Martin, R.R., Polashock, J.J., and Tzanetakis, I.E. Pest description and crop damage Lecanium scales overwinter on twigs and branches under a hard, helmet-like, reddish-brown covering, which is about 6-8 mm in diameter. Scorch has also been found more recently … The 6 rows of "Bluetta" to the left (east) and the 6 rows of "Berkeley" to the right (west) were planted on 5 x 10 foot spacing. Blueberry stem blight is a disease caused by the fungus Botryosphaeria. Plant Disease 100:2211-2214. Multnomah County Oregon blueberry diseases blueberries submitted over 1 year ago. According to Whalon, “…a lot of the monitoring, control and other information would likely be applicable (to the southern United States), but the timing, degree days and other mitigating factors would be … Viruses 4:2831-2852. Azalea bark scales overwinter on older twigs and branches, under a white, felt-like egg sac about 6-12 mm in diameter. by the fungus, Monilinia vaccinii-corym-bosi (Figure 1). 2012. New and emerging viruses of blueberry and cranberry. For more information, read Common Blueberry Insect Pests and Their Control by Elsner and Whalon. Possible problems are Botrytis, Pseudomonas, mummy berry, root weevils and scale. OSU Extension Service Resources Visit your OSU Extension Service office at 200 Warner-Milne Road, Oregon City, for these publications, or get Another of the main diseases causing leaf spots on blueberries is Gloeocercospora. Blueberry fruit drop-associated virus: A new member of the family Caulimoviridae isolated from blueberry exhibiting fruit-drop symptoms. Shoestring (Blueberry shoestring virus) Shoestring is a widespread disease of blueberry in Michigan and New Jersey and has also been detected in Washing-ton, Oregon and New Brunswick, Canada. Fungal diseases often appear in spring when the rains begin. Varieties of Blueberries Resistant to Stem Blight. It is caused by blueberry shoestring virus (BSSV).
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