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  1. 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 ...

  2. 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 ...

  3. 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 ...

  4. 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 ...

  5. 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 ...

  6. 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 ...

  7. Invasive Species Management: Common and Japanese Barberry

    https://ohioline.osu.edu/factsheet/anr-0106

    acting as an alternative host for the disease, black stem rust, caused by the fungus Puccina graminis. As ... health threat to humans, companion animals, and livestock. Multiple diseases of consequence such as Lyme ... disease, Rocky Mountain spotted fever, and anaplasmosis can be vectored or transmitted by ticks to their ...

  8. Rhizoctonia Damping-off and Root Rot of Soybeans

    https://ohioline.osu.edu/factsheet/plpath-soy-1

    Rhizoctonia result from stand reduction in newly planted fields, premature death of diseased plants, and ... production of smaller seed. Symptoms of this disease are usually noticed by early summer, where wilted or ... diseased plants become chlorotic and closely resemble plants with a nitrogen deficiency (Figure 2). Figure ...

  9. Anthracnose of Raspberry and Blackberry

    https://ohioline.osu.edu/factsheet/plpath-fru-27

    Pathology Anthracnose is a disease common to raspberries, blackberries and other brambles or cane fruits. It ... throughout the United States. The disease reduces the size and quality of fruit on infected canes. In ... this disease are “cane spot” and “gray bark.” Symptoms Figure 1. Anthracnose symptoms on black ...

  10. Soil Testing for Ohio Lawns, Landscapes, Fruit Crops, and Vegetable Gardens

    https://ohioline.osu.edu/factsheet/hyg-1132

    inexpensive way to maintain good plant health in lawns and landscapes, and to maximize productivity of ... samples in a large area such as a lawn. The longer length and welded step reduces back and shoulder strain ... effective for lawns and landscapes if you are only performing plant nutrient maintenance tests over small ...

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