Yellow Turf - Why?

Discussion in 'General Industry Discussions' started by Crist Clapper, Sep 17, 2011.

  1. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 79

    pH is good. Iron - No help. Nitrogen - No help.

    I know this is vague… But I figured I had to start somewhere!

    Help?
     
  2. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    Water poisoning.
     
  3. Landscape Poet

    Landscape Poet LawnSite Gold Member
    Posts: 3,637

    Could be lots of things. Fungus?
    Overwatered?
    Micro's missing to complete the picture? ETC ETC ETC.
     
  4. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 79

    Irrigation with injector - Municipal water.
     
  5. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 79

    Photographs:

    511Turf1.jpg

    511Turf2.jpg
     
  6. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    Hard to tell, but it looks to be two different types of grass.

    Did you recently seed?

    I would guess annual rye, or perhaps poa popping up with the cooler temps.
     
  7. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 79

    From: Penn State Turf [psu.edu]
    Sent: Tuesday, July 14, 2011 12:13 PM
    To: Crist D. Clapper
    Subject: RE: Grass Type Analysis
    Importance: High

    Crist: The grass specimen submitted on 7/14 appears to be Kentucky Bluegrass. The grass blade is narrow with a boat shaped tip. It does not have auricles and the ligules are membranous with a smooth margin.

    Sincerely,

    Tom F.
    Blair County Extension Director &
    Area Commercial Horticulture Educator
     
  8. Crist Clapper

    Crist Clapper LawnSite Member
    Posts: 79

    No recent seeding. Problem is all-Season.

     
  9. agrostis

    agrostis LawnSite Silver Member
    Posts: 2,264

    That grass looks too dense. Overcrowding will cause season long yellowing.
     
  10. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    Yes, the dark green grass is likely KBG.

    But the light green I would venture to say is not KBG, but rather an annual or perennial rye or poa annua.
     

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