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  2. Powdery mildew - Wikipedia

    en.wikipedia.org/wiki/Powdery_mildew

    This mycelial layer may quickly spread to cover all of the leaves. The lower leaves are the most affected, but the mildew can appear on any above-ground part of the plant. As the disease progresses, the spots get larger and denser as large numbers of asexual spores are formed, and the mildew may spread up and down the length of the plant.

  3. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]

  4. White rust (disease) - Wikipedia

    en.wikipedia.org/wiki/White_rust_(disease)

    White rust is a disease in plants caused by the oomycete Albugo candida or one of its close relatives. Plants susceptible to this disease generally include members of the Brassica family. [ 1 ] White rust has been known to cause agricultural losses in fields cultivating members of this family including broccoli , cauliflower , and Indian ...

  5. Mosaic virus - Wikipedia

    en.wikipedia.org/wiki/Mosaic_virus

    Cucumber leaves afflicted with various stages of Cucumber mosaic virus. A mosaic virus is any virus that causes infected plant foliage to have a mottled appearance. Such viruses come from a variety of unrelated lineages and consequently there is no taxon that unites all mosaic viruses.

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  7. Why Are My Toenails White? Doctors Explain. - AOL

    www.aol.com/why-toenails-white-doctors-explain...

    White toenails can take time to treat, Dr. Wofford emphasizes, “I remind my patients that any treatment or intervention will take six to nine months to yield results due to the slow nature of ...

  8. Spilocaea oleaginea - Wikipedia

    en.wikipedia.org/wiki/Spilocaea_oleaginea

    Hot and dry conditions in the summer cause the fungus to become inactivated and the leaf spots to turn white and crusted. [11] During the summer, the diseased leaves fall leaving only the healthy ones on the partially defoliated trees. This provides a natural control for the disease. [5] The disease also mainly infects young leaves in the ...

  9. Here's what those white marks on your nails say about ... - AOL

    www.aol.com/2017-11-24-heres-what-those-white...

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