Fairy rings?

Discussion in 'Pesticide & Herbicide Application' started by Bunton Guy, Jun 22, 2003.

  1. Bunton Guy

    Bunton Guy LawnSite Bronze Member
    Posts: 1,743

    Is fairy rings the little rings of dead spots?? any fixes? Lately I have fertilized most lawns with a 5-10-15 Lesco iron low nitrogen fert and its been 2 weeks...no green up at all yet but I have noticed little brown rings on many of my yards and on one Zosia lawn I have noticed little black spots as if grease has been dripped onto the lawn. 90% of the yards with this problem is on Tall Fescue lawns...and one is Zosia.
     
  2. jsr2741

    jsr2741 LawnSite Senior Member
    Posts: 392

    Sounds like pythium blight also know as (greasy spot).
     
  3. Bunton Guy

    Bunton Guy LawnSite Bronze Member
    Posts: 1,743

    Isn't pythium blight a webby white cotton fungus strung between blades???
     
  4. LawnMagic1

    LawnMagic1 LawnSite Member
    Posts: 47

    It's probally dollar spot.
     
  5. Bunton Guy

    Bunton Guy LawnSite Bronze Member
    Posts: 1,743

    ahhh thats the name I was looking for. Any fixes? I see this on ALOT of yards not just mine ! so I know im no the only one with this.
     
  6. jsr2741

    jsr2741 LawnSite Senior Member
    Posts: 392

    Yes, pythium blight has the little web type mold when the air is heavy with moisture.

    Are the spots about 2 inches or so in diameter. If so its probably dollar spot. Can get up to 8 inches in some grasses, 2 of which you mentioned.

    I'll quote what the University of Missouri says about control of this.

    "Maintain optimum fertility as the disease is favored by nitrogen deficiency."

    "If symptoms are present and nitrogen levels are low, a light nitrogen application of 0.25 to 0.5 pounds N per 1,000 Sq Ft may stimulate recovery."

    "When this disease is serious, apply perventive fungicide sprays during the spring and early summer and again in late summer and fall."

    "Start spraying when disease is first evident."

    "Avoid use during summer heat stress periods."

    Hope this helps.
     
  7. Bunton Guy

    Bunton Guy LawnSite Bronze Member
    Posts: 1,743

    The brown ring itself is about 2 inches thick....and spans rings as large as a basketball and some a little larger. Is this actually killing off the lawn ?? Will this result in needing to reseed?
     
  8. jsr2741

    jsr2741 LawnSite Senior Member
    Posts: 392

    How bout a photo.
     
  9. Bunton Guy

    Bunton Guy LawnSite Bronze Member
    Posts: 1,743

    Will do.
     

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