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Winterizer

Discussion in 'Organic Lawn Care' started by Smallaxe, Sep 2, 2007.

  1. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    Has anyone taken over an underfertilized lawn then, after fertilizing, notice how long it takes for the grass to green up? My observation with regular, non-special granulated is about 2 - 3 weeks, depending on moisture.
    What is the latest anyone has noticed color change in the fall for the winterizer?
    Should there be a color change in the fall with the winterizer?
    Thanks in advance for all opinions. :)
     
  2. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    It could depend on alot of things, but primarily quantity and type of nitrogen and growth rates.
     
  3. lawnsbytim

    lawnsbytim LawnSite Member
    Posts: 47

    With an organic fert., I will see a green up to the end of Sept in WI. The October applications have less green up.
     
  4. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    So do you believe the application is working to store carbohydrates in the root and stem when there is no change in the blade?
     
  5. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Only if the N application can be correlated to growth rate and an increase in photosynthate production.
     
  6. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    That is the question: Can the late October, even November, application be correlated to any new growth? (in Wisconsin)
    It does not show up in the green blade, can it be assumed to be showing up in the roots? :) Thanks.
     
  7. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Don't judge your fertilizer effectiveness by color alone.

    If the turf is dormant, or close to it, I would not expect to see any significant effects from fertilization. In short, timing is everything. If the turf is not actively growing (transpiring), then your fertilizer application is for the most part wasted, especially where leachable ions are concerned. If your not observing a visual change in growth rates due to the late season N application then you probably missed the boat, or something else is going on in the soil.

    UWEX recommends September and October fertilizing. When in October depends on whether or not the turf is actively growing and can vary from year to year. Your best timed late season application will put on fertilizer at a time that allows the turf to utilize it just prior to going dormant, probably 1-3 weeks before dormancy depending on the type of fertilizer used.
     
  8. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    I'll also add that if your getting an explosion of vegetative growth after your winterizing application, you over fertilized.
     
  9. lawnsbytim

    lawnsbytim LawnSite Member
    Posts: 47

    Everything I read says that there is nutrient uptake by the roots after the blade growth stops. I will see earlier green up in the spring even with lawns I winterized late with organics. If it gets late in October, consider a bridge fertilizer as the temps may be too low for microbial release of a straight organic.
     
  10. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    Thanks Kiril,

    I tend to to agree completely. :) I was not able to bring up the particular UWEX url, because I can't get pdf on this machine for whatever reason.
    My observations made me think that the later application was indeed being wasted.
    This helps me time the applications this fall. It is added difficulty in that that the grass is now greening up and growing like crazy since the drought is broken. At least temporarily.
     

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