Dead spots in lawn... Help?

Discussion in 'Turf Renovation' started by Crist Clapper, Jul 17, 2012.

  1. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 77

    Here's two photos... Thoughts on what the problem is? What else could I tell you that would help?

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  2. suzook

    suzook LawnSite Member
    Posts: 145

    Looks like grubs.
     
  3. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 77

    Grub control was applied... Maybe not effective?
     
  4. mjlcare2

    mjlcare2 LawnSite Member
    Posts: 200

    Where does the dog take a leak?
     
  5. FYS777

    FYS777 LawnSite Silver Member
    Posts: 2,305

    water ?????
     
  6. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,080

    Do those dead areas lift off the ground like pieces of rotted carpet? How deep does the water soak into the soil?? These could be puddle areas where the water sits after the irrigation goes off...
    Grubs are easy enough to spot by ripping up the dead stuff and seeing what going on underneath...
     
  7. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,905

    My vote goes to disease. Is it hot where you are? Pennsylvania. Humid? silly question. Was this lawn originally hydroseeded? Is the seed mixture high in perennial ryegrass? It looks like it.

    If so, I suspect red thread fungus.
    http://urbanext.illinois.edu/hortanswers/detailproblem.cfm?PathogenID=176

    Dollar spot, grey leaf spot and brown patch are not out of the question.

    Try to reduce the average humidity at night. Do not water after 2 pm. Water more deeply, but only three times per week--two times is better. Keep fertility level fairly high, as this reduces red thread problems. Do not buy any perennial ryegrass seed unless it claims to be resistant to red thread. Better seed costs more--and its worth it.
     
  8. turf21

    turf21 LawnSite Member
    from MO
    Posts: 27

    I'm with Riggle. Looks to be disease. My vote goes to Dollar Spot.
     
  9. maynardGkeynes

    maynardGkeynes LawnSite Senior Member
    Posts: 409

    Brown patch or dollar spot. Daconil.
     
  10. jbell36

    jbell36 LawnSite Bronze Member
    from KANSAS
    Posts: 1,267

    my vote is dollar spot
     

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