Help with Fungus please

Discussion in 'Organic Lawn Care' started by Keegan, Apr 2, 2009.

  1. NattyLawn

    NattyLawn LawnSite Bronze Member
    Posts: 1,643

    I'm sure red thread overwinters, but are cultural conditions right for the disease to thrive? We don't have the temps here for the disease to thrive, and I'm pretty sure CT doesn't yet either...

    I think this is from aggieturf.org

    Shoot attacking fungus; most severe during periods of slow shoot growth; typically occurs in spring and fall; Pathogen overwinters as mycelial fragments on living and dead plants; disease is spread by mycelia from infection centers during moist cool weather (60 to 75 degrees); confined to leaves and leaf sheaths; spread by water or machinery moving over infected turf; red threads are easily broken off the leaf and carried by the wind to spread the disease-next year it will likely be in another location

    FACTORS THAT MAY PROMOTE DISEASE DEVELOPMENT:

    Spring and fall disease; temperatures 60 to 75 degrees; high humidity; low nitrogen levels; heavy dews
     
  2. Keegan

    Keegan LawnSite Senior Member
    from CT
    Posts: 606

    Here are some pics I finally got uploaded. 75% of the lawn looks like this. Not every single blade is infected.

    100_1463.jpg

    100_1462.jpg

    100_1466.jpg

    100_1463.jpg

    100_1462.jpg

    100_1466.jpg
     
  3. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,080

    Here, There are entire sections of lawns that look that way right now. I do cleanup with a blower instead of a rake and one advantage is to get air through the crown of the grass plant.
    Good air circulation when the grass starts growing is beneficial to healthy growth and not to disease organisms.
    How can you tell the difference between fungal infection and winterkill?
     
  4. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

    I agree. Not seeing anything there that indicates fungus .... salt burn & freeze damage are possibilities.
     
  5. Keegan

    Keegan LawnSite Senior Member
    from CT
    Posts: 606

    THe reason I thought it might be a fungus were the reddish brown marks which are hard to see.
    It makes sense about it being winter kill. We had a tough winter here.
     

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