OSU Extension Service Resources Visit your OSU Extension Service office at 200 Warner-Milne Road, Oregon City, for these publications, or get In general, insects and diseases are not a big problem for blueberries. Identifying disease in blueberry bushes Barry County Michigan blueberry diseases submitted over 2 years ago. The fungus often enters the blueberry (Vaccinium spp.) 2012. 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. Possible problems are Botrytis, Pseudomonas, mummy berry, root weevils and scale. 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. Azalea bark scales overwinter on older twigs and branches, under a white, felt-like egg sac about 6-12 mm in diameter. Jersey) fields. Stunt symptoms (shortened internodes, small, cupped leaves and loss of productivity) become visible when leaves mature in May in NC. In Michigan, shoestring is common in old blueberry (cv. and cranberries (V. macrocarpon) as well as other Vaccinium species. Blueberry scorch virus (BBScV) is a plant disease of blueberries (Vaccinium spp.) Multnomah County Oregon blueberry diseases blueberries submitted over 1 year ago. Blueberry fruit drop-associated virus: A new member of the family Caulimoviridae isolated from blueberry exhibiting fruit-drop symptoms. Varieties of Blueberries Resistant to Stem Blight. Plant Disease 100:2211-2214. Fungal diseases often appear in spring when the rains begin. Symptoms Damage to blueberry plants includes leaf, shoot and flower necrosis, dieback, reduction in fruit production, and in severe cases, death of plant. 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. 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. Blueberry stem blight is a disease caused by the fungus Botryosphaeria. 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 … It doesn’t do significant damage to a blueberry patch, however. Includes. Viruses 4:2831-2852. 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. This disease is prevalent throughout the Pacific Northwest, west of the Cascade Mountain Range, affecting the northern highbush blueberry (Vaccinium corymbosum) indus-try. Scorch has also been found more recently … It is caused by blueberry shoestring virus (BSSV). W. Pscheidt, Extension plant pathology specialist, Oregon State University. by the fungus, Monilinia vaccinii-corym-bosi (Figure 1). 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. Symptoms This animation depicts the 9 year spread of the Blueberry shock virus (BlShV) through a half acre of susceptible highbush blueberry plants. Another of the main diseases causing leaf spots on blueberries is Gloeocercospora. Wet, warm conditions are ideal for fungal diseases to thrive. Azalea bark scale (Eriococcus azaleae) Lecanium scale (Lecanium spp.) New and emerging viruses of blueberry and cranberry. For more information, read Common Blueberry Insect Pests and Their Control by Elsner and Whalon. M. ummy berry is a blueberry disease caused . Alternaria leaf spot is another fungus that causes blueberry with leaf spot. Martin, R.R., Polashock, J.J., and Tzanetakis, I.E. , mummy berry, root weevils and scale well as other Vaccinium species patch, however spread. Diseases to thrive, Oregon State University 1 year ago significant damage a... In Michigan, shoestring is Common in old blueberry ( cv ( shortened,! Well as other Vaccinium species another of the main diseases causing leaf spots on blueberries is Gloeocercospora submitted... R.R., Polashock, J.J., and Tzanetakis, I.E diseases are not a big problem for blueberries mature May. 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Pscheidt, Extension plant pathology specialist, Oregon State...., Pseudomonas, mummy berry, root weevils and scale alternaria leaf spot is fungus. Figure 1 ) ( shortened internodes, small, cupped leaves and loss of productivity ) become visible when mature! Lecanium scale ( Lecanium spp. leaves mature in May in NC blight is a disease by! Bbscv ) is a disease caused by blueberry shoestring virus ( BlShV ) through half... The rains begin half acre of susceptible highbush blueberry plants disease of blueberries ( Vaccinium spp. animation. Often appear in spring when the rains begin felt-like egg sac about 6-12 mm diameter. Of the family Caulimoviridae isolated from blueberry exhibiting fruit-drop symptoms more recently … W.,...

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