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  2. Dollar spot - Wikipedia

    en.wikipedia.org/wiki/Dollar_spot

    Dollar spot is a fungal disease of turfgrass caused by the four species in the genus Clarireedia, in the family Rutstroemiaceae. [1] The pathogen blights leaf tissues but does not affect turf grass roots or crowns. There is evidence that a fungal mycotoxin produced by the pathogen may cause root damage, including necrosis of the apical meristem ...

  3. Fusarium patch - Wikipedia

    en.wikipedia.org/wiki/Fusarium_patch

    Fusarium patch. Fusarium patch is a disease in turf grass settings also called pink snow mold or Microdochium patch. In many cool season grass species in North America, it is caused by the fungus Microdochium nivale . [1] The white-pink mycelium on infected leaf blades is a distinguishing characteristic of the Microdochium nivale pathogen. [2]

  4. Drechslera leaf spot - Wikipedia

    en.wikipedia.org/wiki/Drechslera_leaf_spot

    The symptoms of Drechslera leaf spot are mostly small, dark-brown, or purplish spots on the leaves. [1] The spots eventually expand and become lighter-brown or ashy in the middle (usually having dark margins around the center). Once the spots run together, girdling of the entire leaf blade occurs. Warm weather induces crown rot and eventual ...

  5. Leaf spot - Wikipedia

    en.wikipedia.org/wiki/Leaf_spot

    A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [1] Symptoms can overlap across causal agents, however ...

  6. Brown patch - Wikipedia

    en.wikipedia.org/wiki/Brown_patch

    Brown patch is a common turfgrass fungal disease that is caused by species in the genus Rhizoctonia, usually Rhizoctonia solani. [1] Brown patch can be found in all of the cool season turfgrasses found in the United States. Brown patch is most devastating to: Bentgrass (Agrostis sp.), ryegrass (Lolium sp.), Annual bluegrass (Poa annua), and ...

  7. Turf necrotic ring spot - Wikipedia

    en.wikipedia.org/wiki/Turf_necrotic_ring_spot

    Turf necrotic ring spot is known to infect various bluegrass and turfgrass species, especially the cool-season grasses. The fungus also infects fescues and bentgrasses (11). It is common in sodded lawns, rapidly growing lawns, and lawns with layered soil (3). The pathogen produces circular patches of bald spots that are tan or yellow in color (12).

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