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  2. 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 ...

  3. Verticillium wilt - Wikipedia

    en.wikipedia.org/wiki/Verticillium_wilt

    Wilt itself is the most common symptom, with wilting of the stem and leaves occurring due to the blockage of the xylem vascular tissues and therefore reduced water and nutrient flow. In small plants and seedlings, Verticillium can quickly kill the plant while in larger, more developed plants the severity can vary.

  4. 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.

  5. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    Leaf spots are visible symptoms of virus infections on plants, and are referred to as systemic symptoms. [7] In systematic virus infections leaf spots caused by viruses show a loss of green colour in leaves, due to chlorosis which is a repression of chlorophyll development. [1]

  6. 11 common bug bites — and photos to help you identify them

    www.aol.com/news/11-common-bug-bites-photos...

    What they look like: Chiggers, a type of small mite, typically leave clusters of bites. If you have chigger bites, they'll be small, red and likely quite itchy.Chigger bites may also look like ...

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

    www.aol.com/lifestyle/2017-11-24-heres-what...

    It may form for different, and sometimes dangerous, reasons.

  8. Leaf scorch - Wikipedia

    en.wikipedia.org/wiki/Leaf_scorch

    Leaf scorch (also called leaf burn, leaf wilt, and sun scorch) is a browning of plant tissues, including leaf margins and tips, and yellowing or darkening of veins which may lead to eventual wilting and abscission of the leaf.

  9. 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 ...