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  1. Northern Corn Leaf Blight

    https://ohioline.osu.edu/factsheet/plpath-cer-10

    frequently occurring foliar diseases of corn in Ohio and the Midwest in general. Since the early 2000s, both ... the prevalence and severity of this disease have increased, but in most years plants only becomes ... severely diseased well after silking. During wet weather yield losses may be as high as 30-50% if the ...

  2. Botrytis Bunch Rot or Gray Mold of Grape

    https://ohioline.osu.edu/factsheet/plpath-fru-03

    and causes diseases on a variety of unrelated crops. Bunch rot can cause serious losses on highly ... Infection of ripe berries is the most common and destructive phase of this disease. Infected berries first ... and Disease Cycle Botrytis bunch rot is caused by the fungus Botrytis cinerea. The fungus overwinters ...

  3. Powdery Mildew of Wheat

    https://ohioline.osu.edu/factsheet/plpath-cer-11

    tritici, is the most common foliar disease of wheat in Ohio. It is most damaging in years with relatively ... late April or early May when wheat is in the joint to flag-leaf stage of development. This disease ... the flag leaf becomes severely diseased by heading. Losses of up to 45 percent have been documented in ...

  4. Verticillium Wilt of Strawberry

    https://ohioline.osu.edu/factsheet/plpath-fru-32

    disease development may occur when soil temperature is from 70 to 75 degrees F (21 to 24 degrees C). Many ... differentiate from those caused by other root infecting fungi. Isolation from diseased tissue and culturing the ... fungus in the laboratory are necessary for positive disease identification. On infected strawberry ...

  5. Black Knot of Plums and Cherries

    https://ohioline.osu.edu/factsheet/plpath-fru-31

    Pathology Black knot of plums and cherries is a widespread and serious disease throughout the United States. ... Black knot is a common disease in Ohio on wild plums and cherries and in home orchards where pruning and ... twigs. The disease becomes progressively worse during each growing season and unless effective control ...

  6. Testing Protocols for Diseases Surveillance in Poultry

    https://ohioline.osu.edu/factsheet/vme-32

    industry relies heavily on surveillance to keep certain diseases out of the population. Avian Influenza ... (AI), Avian Mycoplasma and Salmonella are examples of such diseases. Surveillance is an intricate and ... complicated process that can be different in different diseases and in different situations. In this article ...

  7. Cane Blight of Raspberries

    https://ohioline.osu.edu/factsheet/plpath-fru-10

    Pathology Cane blight is one of the more damaging diseases of raspberries. The disease is most common on ... black raspberries but also occurs on red and purple varieties. The disease occasionally occurs on ... The cankers enlarge and extend down the cane or encircle it, causing lateral shoots above the diseased ...

  8. Leather Rot of Strawberry

    https://ohioline.osu.edu/factsheet/plpath-fru-09

    it is considered a minor disease of little economic importance. However, excessive rainfall during ... development. Where the disease has been a problem in Ohio, infection of green fruit is common. On green ... berries, diseased areas may be dark brown or natural green outlined by a brown margin. As the rot spreads, ...

  9. Diplodia Tip Blight of Two-Needled Pines

    https://ohioline.osu.edu/factsheet/plpath-tree-03

    diseases in the urban environment. It affects many common landscape pines in the Midwest, including ... disease is found throughout the Great Plains, Midwest, Northeast, and California. Figure 1. Typical tip ... blight symptoms on Austrian pine. Symptoms and Signs This disease is characterized by the blight, or ...

  10. Scab of Peach, Nectarine, Plum, and Apricot

    https://ohioline.osu.edu/factsheet/plpath-fru-39

    The disease affects fruit, leaves and young green twigs. Scab is most common in home orchards where ... by the scab fungus. The disease is usually more serious in low-lying, moist, shady areas where air ... the leaf. Diseased leaf tissue may dry up and drop out, leaving “shot-holes.” If the season is wet, ...

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