Fungus remedy

Discussion in 'Pesticide & Herbicide Application' started by tipptop, May 10, 2007.

  1. tipptop

    tipptop LawnSite Member
    Posts: 0

    Hello to all. A good customer of mine who does all his own yard work except cutting has what I see as dead rings with green grass in the center (fairy ring maybe). He has asked me to thatch his lawn this weekend and then he intends to apply a granular (Scotts) fungacide treatement. Sounds good but with the temps being 70 + in the northeast I think he may add a possible crabgrass problem that he is controlling over the last 2-3 years. Any advice will be appreciated. Thank you
     
  2. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,914

    If it is a sod or bluegrass lawn--it could be necrotic ring spot. Dead sunken rings with healthy grass in center. Rings about 15 to 18 inches diameter.
    Does it look like this?
    http://www.ext.colostate.edu/pubs/garden/02900.html

    If it is NRS then fungicides are not much help--my opinion. He would be better off reseeding the spots with top quality Scotts seed. Or...cut out the spot square and the surrounding 6 inches. Then patch with a new piece of sod. (Better quality sod.)
     
  3. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Posts: 5,846

    Sounds like what RigglePLC said. Sometimes called "summer patch". 3 or 4 or 5 fungicide treatments can prevent most of it, but treatments are very expensive, and they need to be done every spring/summer.

    Permanent solution is to seed the spots with resistent cultivars of Kentucky blue. Best time in N.J. = late August/early September.

    Lawns growing in heavy soils with lots of irrigation are tend to be the worst.

    .
     

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