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Is it true?

Discussion in 'Turf Renovation' started by Ralph Wiggum, Sep 1, 2007.

  1. Ralph Wiggum

    Ralph Wiggum LawnSite Member
    from NY
    Posts: 27

    If you seed with a mix of PRG and KBG that the KBG will never grow because the PRG will block it out? heres my mix

    25% Darkstar II Perennial Ryegrass
    25% Preston Perennial Ryegrass
    25% Yorkshire Dales Perennial Ryegrass
    15% Deepblue Kentucky Bluegrass
    10% Washington Kentucky Bluegrass

    Thanks guys
  2. DiyDave

    DiyDave LawnSite Bronze Member
    Posts: 1,695

    down to less than 10% of the total mix. It is true that prg releases compounds that keep other seeds from germinating. I think the compounds are classified allelomorphs (SP?) Another example of this is a black walnut tree that has the ability to kill other tree seedlings from the compounds that the hulls of the nuts release.:hammerhead:
  3. turfnh2oman

    turfnh2oman LawnSite Member
    Posts: 127

    FYI Dave,

    The compound released by black walnut trees is called "Juglans" which is also the genus of the species.

    As for a compound released by Perennial rye, I've never heard of this theory that keeps other seeds from germinating ?? What Perennial rye will do [if to much percentage of mix] is encourage interplant competition. With the rye taking up all the space [as it'll germinate and establish first] nothing else has a chance to germinate.
  4. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    Rapid germination of one specie is the cover crop for slower germinating species. A strategy in farming, but it is done with annuals.
    First I have heard of PRG actively Pre-M ing KBG.
    Do you think it is real?

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