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Grub question

Discussion in 'Pesticide & Herbicide Application' started by forgop, May 3, 2006.

  1. forgop

    forgop LawnSite Member
    Messages: 145

    Is there a basis on how many grubs you can have per so many square yards before they say you are at risk of losing your yard?
  2. Tscape

    Tscape LawnSite Bronze Member
    Messages: 1,370

    10+ per square foot is what I read somewhere (Beard?). I believe that is about right as far as my experiences go.
  3. indyturf

    indyturf LawnSite Bronze Member
    from Indy
    Messages: 1,901

    yes 10-15 per square ft is enough to cause lawn damage. if you are seeing them now I would recommend waiting till July and applying merit. the grubs you see now wont do much damage if any.
  4. SWD

    SWD LawnSite Senior Member
    Messages: 988

    Just goes to show you how different thresholds are evaluated.
    I use two as a basis for currative apps - then preventitive for at least a year following.
    Remember though that with my soil temps throughout the year, I'm experiencing a continuous degree day pressure the entire year.

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