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  1. Sooty Blotch and Fly Speck of Apple

    https://ohioline.osu.edu/factsheet/plpath-fru-41

    Pathology Sooty blotch and fly speck are two different diseases. Both diseases are widespread throughout the ... of near-mature fruit. The discoloration is superficial, and while neither disease actually damages ... the fruit, the presence of disease reduces the grade and market value of the fruit. Although all apple ...

  2. Lawn Grass Cultivar Selection

    https://ohioline.osu.edu/factsheet/hyg-4027

    patch diseases Failure to select the proper species or cultivar may result in poor or thin grass ... disease and insect resistance, and adaptations that allow the turf to thrive in differing environmental ... selection. Turfgrass cultivars with resistance to diseases should also be included in the blend. For ...

  3. Hops Downy Mildew

    https://ohioline.osu.edu/factsheet/plpath-fru-49

    destructive disease of hops (Humulus lupulus) in the Midwest and Northeastern United States. Downy mildew is ... mild temperatures. The disease is systemic and can cause significant yield and quality losses annually. ... Farm. Disease Development and Symptoms The downy mildew pathogen survives the winter in dormant buds, ...

  4. Viral Diseases of Plants

    https://ohioline.osu.edu/factsheet/plpath-gen-5

    colorful) names based on the disease they cause—for example, tobacco ring spot, watermelon mosaic, barley ... provide an overview of key concepts in plant pathology. Plant pathology is the study of plant disease ... intracellular (inside cells) pathogenic particles that infect other living organisms. Human diseases caused by ...

  5. Fusarium Head Blight or Head Scab of Wheat, Barley and other Small Grain Crops

    https://ohioline.osu.edu/factsheet/plpath-cer-06

    one of the most important diseases of wheat, oats, barley, spelt and other small grain crops. However, ... scab is not only a disease of small grains, it also affects many other grass species including foxtail, ... quackgrass, crabgrass and bluegrass. In addition, scab is not the only disease caused by F. graminearum. If ...

  6. 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 ... scab. Small (¼ inch), round, and yellowish-green to yellowish-brown spots develop on the underside of ...

  7. Crop Tree Management: A Tool to Help You Achieve Your Woodland Goals

    https://ohioline.osu.edu/factsheet/f-50

    more insect and disease resistant, grow faster, and produce additional landowner benefits. In ...

  8. Fire Blight of Apples and Pears

    https://ohioline.osu.edu/factsheet/plpath-fru-22-0

    a common and very destructive bacterial disease of apples and pears (Figure 1). The disease is caused by ... (Rosaceae) family (Table 1). On apples and pears, the disease can kill blossoms, fruit, shoots, twigs, ... Crabapple Hawthorn Mountain Ash Pyracantha Quince Raspberry Spirea Disease Development Fire blight first ...

  9. Cedar-Apple Rust

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

    Ohio State University Cedar-apple rust is a common plant disease caused by the fungal pathogen ... apple, crabapple, eastern redcedar, and other juniper species. Cedar-apple rust is a widespread disease ... disease on redcedar and juniper, the symptoms can be significant and damaging on apple. This disease has ...

  10. Sclerotinia Stem Rot (White Mold) of Soybean

    https://ohioline.osu.edu/factsheet/plpath-soy-3

    present leaves that turn brown to tan. (A. Dorrance, OSU). Symptoms and Signs Diseased plants first appear ... Sclerotinia stem rot, or white mold, of soybean is a disease most commonly reported in high-yield soybeans in ... the North Central Region of the United States. Overall disease incidence and severity vary from year ...

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