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  2. Diplocarpon rosae - Wikipedia

    en.wikipedia.org/wiki/Diplocarpon_rosae

    Diplocarpon rosae is a fungus that creates the rose black spot disease. [1] Because it was observed by people of various countries around the same time (around 1830), the nomenclature for the fungus varied with about 25 different names. [2]

  3. List of pests and diseases of roses - Wikipedia

    en.wikipedia.org/wiki/List_of_pests_and_diseases...

    Black spot (Diplocarpon rosae) Black spot (class Leotiomycetes: family Helotiales) Diplocarpon rosae syn. Marssonina rosae – Marssonina rosae causes black spots on leaves. [4] The spots, which may be as much as 12 mm across, are generally circular and have an irregular edge often with a yellow halo. Leaves frequently turn yellow and fall early.

  4. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    Other fungicides such as zineb, chlorothalonil and Captan, also treat leaf spot disease and Benomyl specifically treats Cercospora leaf spots, cherry leaf spot and black spot of roses. [7] Thiabendazole is used to treat leaf spot diseases of turf and ornamentals. [7] Both fenarimol and nuarimol are pyrimidines that also

  5. Fungicide use in the United States - Wikipedia

    en.wikipedia.org/wiki/Fungicide_use_in_the...

    Spots first appear on the upper surface of lower leaves as faint brown to black pinpoint dots. As the dots enlarge to become brown to dark-brown circular spots, a yellow "halo" generally develops as a border around each spot. This disease is frequently seen as early as June 1 in both North Carolina and Virginia.

  6. Black Spot - Wikipedia

    en.wikipedia.org/wiki/Black_Spot

    Black spot (roses), a plant disease caused by a fungus; Black spot disease (fish), a fish disease also known as diplopstomiasis; Black spot leaf disease, a plant disease affecting certain grape varieties

  7. Black spot leaf disease - Wikipedia

    en.wikipedia.org/wiki/Black_spot_leaf_disease

    Treating black leaf disease can be achieved in many ways. Some include removing each affected leaf of any yellow or black color. If the infection has spread throughout a larger area, it may be best to remove the affected limb of the plant to reduce further spread. Fungicides may be used as treatment. There are a number of remedies used to ...

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  9. Elsinoë rosarum - Wikipedia

    en.wikipedia.org/wiki/Elsinoë_rosarum

    It is a condition found on roses, causing leaves to have irregular dark margins and spots. The disease usually appears during wet weather. The disease usually appears during wet weather. References

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