yellow areas in turf - not grubs (mowing)?

Discussion in 'Pesticide & Herbicide Application' started by americanlawn, Sep 7, 2007.

  1. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Posts: 5,852

    I run about 12 - 15 service calls a day. While I'm currently treating 5 or 6 lawns per day for annual white grubworms, other lawns seem to have "fungus problems" (especially leaf spot/melting out) -- basically on lawns that are currently being mowed at 2 1/2 inches or less--some as low as one inch! Seems "short-mowed lawns" are yellowing - especially in high spots & weed-eating at 1/2 inch, etc.:confused:

    I'm mowing my lawn at 3 1/2 inches (measured after it's mowed), and I have none of these yellowing problems???

    Anybody else now seeing this on Kentucky bluegrass lawns?:waving:
  2. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,231

    Could be "too tall" problem. Grass gets too tall and then someone cuts off about 3 inches. Worse if ryegrass, rain, high temps and plenty of nitrogen.

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