Whats wrong with this lawn?

Discussion in 'Turf Renovation' started by sea ox, Sep 6, 2012.

  1. 44DCNF

    44DCNF LawnSite Bronze Member
    Messages: 1,533

    Shallow roots from frequent but shallow watering. Stress and dormancy from the drought. It's slowly snapping back in other areas as well. Be vigilant with fall weeds taking over in the thin spots, but wait untill the grass has recovered for a while to spot spray if needed.

    Was the area recently more shaded, before a tree fell or was removed? This can also happen when there's a sudden sun exposure/microclimate change like that, to where it can take a couple seasons to fully rebound.
  2. TScapes

    TScapes LawnSite Senior Member
    Messages: 453

    I'd pull back some of the dead turf with a shovel and inspect for grubs. As for disease, if you look at the leaf blade of the dead and the edge of where it is green... look for any lesions with dark brown borders that have turned brown or even gray. That is probably brown patch or could be another disease like dollar spot. If you see the lesions, just get a fungicide and go ahead and treat the areas. Either way, you will HAVE to overseed. If it is a fungus, plan on pre-treating the area next season to prevent it.
  3. maynardGkeynes

    maynardGkeynes LawnSite Senior Member
    Messages: 411

    Agree. Look at the neighbor's lawn. If fungus, neighbor would show some signs of brown patch etc., but theirs looks real good.
  4. TScapes

    TScapes LawnSite Senior Member
    Messages: 453

    Umm... Yes a fungus spreads, but just because a neighbor has it doesn't mean it's gonna spread to yours and vise versa.
  5. TScapes

    TScapes LawnSite Senior Member
    Messages: 453

    Also, upon further review of your pics... you have some serious separation from the soil and the sidewalk. That is a classic sign of drought or extreme heat stress. It also appears that there is some dead or "Burn" on the alberta. Without actually seeing the location in person, these are only assumptions based on your photos.
  6. maynardGkeynes

    maynardGkeynes LawnSite Senior Member
    Messages: 411

    Fungus damage is a lot less frequent than drought damage. If you have to guess what is causing a bunch of large, dry looking areas with virtually no information other than a couple of pictures, your first guess should be the one that is the most common cause, which is drought damage. But it is a guess -- it could be many other things. Also, a lot of these fungi are ubiquitous, so you don't need spreading from lawn to lawn. It's the heat and humidity that brings it out. I assume that is the same at both yards.
    Last edited: Sep 8, 2012
  7. Smallaxe

    Smallaxe LawnSite Fanatic
    Messages: 10,082

    The O.P. says he has enough water,,, so that can't be the problem... he doesn't have to check the root zone because he already knows that the turf is getting irrigated...

    Every season we get 100 cases of fungus for every 3 cases of Summer Burnout... :)
  8. sea ox

    sea ox LawnSite Member
    Messages: 174

    Thanks for everyones input. The alberta is brown from red spiders. The neighbors lawn looks nice because that house was just built and the sod laid about a month ago. I will definitely inspect the root zone the next time im out that way and collect some more pictures!! I over seeded with a mix of perrienal rye, fescue, and bluegrass last fall.
    It is definitely not heat damage because the lawn was nice and green all summer. This only developed about 3 weeks ago and it has been cool and rainy here for the most part
  9. sea ox

    sea ox LawnSite Member
    Messages: 174

    Across the street is a city maintained island with no irrigation and it is lush and green. Of course its all weeds :)
  10. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 13,665

    Could be gray leaf spot.
    as here.

    Be sure you can identify it, and that you are also familiar with red thread disease.
    Whenever a turf is renovated and reseeded like you did last year. If you plant a mixture containing perennial ryegrass...the quick germination can result in a predominately ryegrass lawn...you may have near zero bluegrass. Worse yet, if you planted a mix that contained an inexpensive perennial ryegrass variety...that turf may not have much disease resistance.
    Blazer 4 has good resistance to gray leaf spot.
    Last edited: Sep 8, 2012

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