Discussion in 'Pesticide & Herbicide Application' started by RSL, Aug 22, 2008.

  1. RSL

    RSL LawnSite Member
    Posts: 16

    Some Lawns Getting Yellow Patches Ranging In Size From 1- 12ft. In Diameter Looks Like Iron Deficient But Leaning Towards Fungus Any Suggestions
  2. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Posts: 5,852

    Without pics, I'll guess Summer Patch. Check out Purdue University.
  3. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,229

    It is fall. My vote goes to rust fungus. Do you get an orange dust when you walk through it? Very common in fall on various cultivars of ryegrass, and a few types of bluegrass. The grass gets a very yellow color. Fertilizer helps. Rust disappears about the time of frost.

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