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what to do with this

Discussion in 'Pesticide & Herbicide Application' started by mrkosar, Aug 29, 2007.

  1. mrkosar

    mrkosar LawnSite Senior Member
    from Ohio
    Messages: 680

    dethatch or another aeration?

    this lawn has been aerated 3 times in the last two years, and they want another aeration and overseeding this fall. they have had disease problems both years and the thatch surprisingly has been reduced somewhat, but is still large as you can see. suggestions?

  2. indyturf

    indyturf LawnSite Bronze Member
    from Indy
    Messages: 1,901

    I'm not a big fan of de-thatching! its too much work and it always looks like it rips up lots of good grass but there is still thatch!
    I would just keep them scheduled for aeration every fall. over time this will help with the thatch layer.
  3. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Messages: 5,954

    I think most midwest land grant universities would recommend a sod cutter.........then start over.

    When we dethatch lawns, we are lucky to reduce the thatch layer 1/2 inch, and that's going over the lawn 3 times in different directions. But one advantage of dethatching is that it also "exposes the thatch" so micro-organisms can work on it.

    I think if it were my lawn, I'd go over it four times with a core aerator and keep doing this for years????
  4. mkroher

    mkroher LawnSite Senior Member
    Messages: 539

    Keep aerating it. Also try some 100% organic fert instead of synth-crap.

    That core sample looks like a dead mole. :D
  5. EA Quinn

    EA Quinn LawnSite Senior Member
    Messages: 393

    Looks to me like they have dollar spot disease. Spray it with some banner, get rid of the dollar spot, then water like crazy to get the lawn to grow out of it.
  6. mkroher

    mkroher LawnSite Senior Member
    Messages: 539

    uh.... did you see his thatch problem? I think that dollar spot is the least of his worries.
  7. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 13,723

    i am with Quinn. Get rid of dollarspot. Aerate and overseed with a disease resistant top quality rye--say Silver Dollar, Allstar-4, or Amazing.
  8. golfguy

    golfguy LawnSite Member
    Messages: 108

    Is this a recently sodded homelawn say less then 3 years?
  9. LindblomRJ

    LindblomRJ LawnSite Silver Member
    Messages: 2,570

    How much fertilizer is being applied?
  10. lawnsbytim

    lawnsbytim LawnSite Member
    Messages: 47

    I have been using Microthatch for lawns with excessive thatch and it has worked very well. Tainio makes it - www.tainio.com/micro_thatch.php It has cellulose decomposing bacillus and fungi. Mix it up, spray it on, and it melts away the thatch over a season.

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