Site

Search results

  1. Grape Black Rot

    https://ohioline.osu.edu/factsheet/plpath-fru-24

    one of the most damaging diseases of grapes in Ohio and other northeastern states. The disease is ... rachises and cluster stems (peduncles) of grapes. If the disease is not managed early in the season, the ... on a grape leaf. Inset shows the dark pycnidia that can be seen in the center of each spot. Disease ...

  2. Late Leaf Rust of Red Raspberries

    https://ohioline.osu.edu/factsheet/plpath-fru-17

    Department of Plant Pathology Late leaf rust is a potentially serious disease of red raspberries. Late leaf ... rust does not affect black raspberries or blackberries. The disease can affect leaves, canes, ... disease. However, losses due to fruit infection have reached 30 percent in commercial red raspberry ...

  3. Peach Leaf Curl

    https://ohioline.osu.edu/factsheet/plpath-fru-26

    disease that occurs on peach, nectarine, and related ornamental plants. The disease, though not a problem ... other diseases and to winter injury. Weakened trees also will produce fewer fruit the following season. ... Yield may be further reduced when blossoms and young fruit become diseased and drop. Symptoms Figure 1. ...

  4. Verticillium Wilt of Raspberry

    https://ohioline.osu.edu/factsheet/plpath-fru-04

    Pathology Verticillium wilt is one of the most serious diseases of raspberry. This disease is caused by ... or the entire plant. The disease is usually more severe in black than in red raspberries. ... Blackberries are also susceptible to the disease, but seldom suffer severe losses. Figure 1. Verticillium wilt ...

  5. Dutch Elm Disease

    https://ohioline.osu.edu/factsheet/plpath-tree-04

    Pierluigi (Enrico) Bonello, Department of Plant Pathology Dutch elm disease (DED) is one of the most ... destructive urban forest diseases. This disease affects native American elm species, such as American (Ulmus ... lacebark (U. parvifolia) elms, are much less susceptible to DED, and the disease is not considered an issue ...

  6. 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 ...

  7. Melampsora Rust

    https://ohioline.osu.edu/factsheet/plpath-tree-08

    known as poplar leaf rust, is a foliar rust disease that has been a large problem for trees in the genus ... willows, in the United States and throughout the world. The disease is caused by several fungal pathogens ... addition to species of Saxifraga (rockfoils) and Ribe s (currants and gooseberries). The disease was ...

  8. Strawberry Leaf Diseases

    https://ohioline.osu.edu/factsheet/plpath-fru-35

    Pathology Fungal diseases of the leaf may occur as soon as the first leaves unfold in early spring and ... continue until dormancy in the late fall. On highly susceptible varieties, these diseases can cause ... significant economic damage. The primary damage from leaf diseases is a loss of vigor through reduced leaf ...

  9. Botrytis Fruit Rot “Gray Mold” of Strawberry, Raspberry, and Blackberry

    https://ohioline.osu.edu/factsheet/plpath-fru-36

    blackberry. Under favorable environmental conditions for disease development, serious losses can occur. One of ... the most serious and common fruit rot diseases is gray mold. The gray mold fungus can affect petals, ... flower stalks (pedicels), fruit caps, and fruit. In wet, warm seasons, probably no other disease causes ...

  10. Orange Rust of Brambles

    https://ohioline.osu.edu/factsheet/plpath-fru-30

    fungus Arthuriomyces peckianus. Orange rust is the most important of several rust diseases that attack ... the canes are stunted. As the disease develops, the edges and lower surface of infected leaves (Figure ... and bright orange (Figure 2C). This bright orange, rusty appearance is what gives the disease its ...

Pages