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  2. Eutypella parasitica - Wikipedia

    en.wikipedia.org/wiki/Eutypella_parasitica

    Each year, the fungus kills the callus material formed by the tree and invades more cambium during the growing season. [4] During the summer months, the fungus is also able to produce asexual spores called conidia that are dispersed by the wind to be used as secondary inoculum to infect other maple trees in the area. Upon dispersal, they ...

  3. Rhytisma acerinum - Wikipedia

    en.wikipedia.org/wiki/Rhytisma_acerinum

    Because the fungus overwinters in diseased leaf debris, removing the debris in fall can help reduce the occurrence of the disease. [3] In certain severe cases, fungicides can be implemented to help with control. [7] [12] Copper fungicides sprayed in early spring when leaves are budding and twice more throughout the season help reduce the ...

  4. Phyllosticta minima - Wikipedia

    en.wikipedia.org/wiki/Phyllosticta_minima

    Phyllosticta minima is a fungus of the division Ascomycota which causes purple-bordered leaf spot, a largely cosmetic disease that infects maple trees. [1] It grows on living and fallen leaves, creating tan, ovular lesions 1 ⁄ 4 inch in diameter and ringed with 'purple' or black spores.

  5. Chondrostereum purpureum - Wikipedia

    en.wikipedia.org/wiki/Chondrostereum_purpureum

    The fungus is applied directly to the weed trees in a nutrient paste which can be stored and handled conveniently. The first regulatory approval was granted in 2001 to Myco-Forestis Corporation and targeted species "including birch, pin-cherry, poplar/aspen, red maple, sugar maple, and speckled alder in the Boreal and Mixed forest regions of ...

  6. Fungicide use in the United States - Wikipedia

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

    This infection can lead to tree death within 3–4 years of the first serious outbreak. Orchards in high humidity areas result in the largest yield loss, often in excess of 50%. [1] Yield loss tends to rise every year as the tree becomes weaker each year after infection. Three fungicide applications can achieve 60–80% control of leaf spot. [2]

  7. Powdery mildew - Wikipedia

    en.wikipedia.org/wiki/Powdery_mildew

    Neem oil effectively manages powdery mildew on many plants by interfering with the fungus' metabolism and terminating spore production. [13] Sulfur and Fish Oil + Sesame Oil is a mixture effective against powdery mildew. [2] Milk has long been popular with home gardeners and small-scale organic growers as a treatment for powdery mildew. Milk is ...

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