Winterizer, what is the deal?

Discussion in 'Fertilizer Application' started by drobin, Nov 15, 2009.

  1. drobin

    drobin LawnSite Member
    Messages: 154

    Should it 100 percent quick release or not? A phd told me all quick release so it grow and strengthen the roots- slow release will continue to release nitrogen when the soil is frozen-no good

    Ive also was told from someone else that you need some slow release because it wont volitize or leach the first rain,

    how much nitrogen can the grass take it in one application ?

    how much is lost in one rain through leaching or volitization?
  2. mikesturf

    mikesturf LawnSite Senior Member
    Messages: 797

    This is a link from Purdue University-Indiana. Also, do a search for winterizer, you'll get lots of info. I use quick release N in November. I use 1 pound of N per 1,000sqft. Temps are usually between 35-55, so soil is not frozen. Most fert will be absorbed into the soil and not washed away over frozen soil.
  3. integrityman

    integrityman LawnSite Bronze Member
    Messages: 1,713


    I like to add a little quick release with iron at the very tail end of the season (as in right now). To further expound, I like to fert with a little higher k-p in the early fall so as to encourage good strong root growth in the Sept, Oct and November months. One reason I like to add a little extra n in the late fall is to help neutralize the added carbon content from the mulched up/ ground up leaves.

    This thread may help you:
  4. Smallaxe

    Smallaxe LawnSite Fanatic
    Messages: 10,082

    Time release capsules put down this time of year are still there in the spring. At that point, I don't consider it a Winterizer, but rather, an early spring app.

    I prefer September/October for winterizer so it actually gets into the turf and is used b4 the ground freezes. We average winter freeze-up of the soil around Thanksgiving, unless there is heavy snow cover b4 it freezes. Give or take a month or 2.

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