Lawn Defecient in Potassium

Discussion in 'Organic Lawn Care' started by firerobz, Sep 6, 2007.

  1. firerobz

    firerobz LawnSite Member
    Messages: 6

    I have been doing an organic progran for 4 years now and just had a soil test done and my "k" is very low. What is a good organic solution to raise it? I aerate and top dress with compost every year. Any suggestions?
  2. Prolawnservice

    Prolawnservice LawnSite Senior Member
    Messages: 612

    organic sop
  3. NattyLawn

    NattyLawn LawnSite Bronze Member
    Messages: 1,643

    Greensand as well.
  4. naughty62

    naughty62 LawnSite Senior Member
    from iowa
    Messages: 369

    clean hard wood ash . composted leaf and lawn clippings
  5. Smallaxe

    Smallaxe LawnSite Fanatic
    Messages: 10,082

    Ash would be my solution as well. Just not sure of what would be a good delivery system.
  6. Newt*

    Newt* LawnSite Member
    Messages: 182

  7. dishboy

    dishboy LawnSite Fanatic
    from zone 6
    Messages: 6,174

    Alfalfa pellets have a good amount of potassium
  8. greenjeans_il

    greenjeans_il LawnSite Member
    Messages: 19

    Wood ash is an excellent source of potassium, but like it was mentioned how to deliver it and what about the pH?

    The answer is to add the wood ash to your compost. Let the microbes tie up the potassium in the compost and hold it in plant available form. Then amend your soil with the potassium enriched compost.

    If good, aerobic biological diversity is maintained in the compost you will not have any issues with pH when using this method. You may be able to sway the pH a little by creating fungal vs. bacterial dominence and vice-versa, but relatively speaking it can be maintained as neutral.

    This method also works for calcium, nitrogen and just about any other nutrient you can name. It all depends on the inputs of the compost like bone meal or blood meal respectively. When the microbes fix the nutrients you lose very little if any to leaching. Natural selection as well as chemical signals make the nutrients available to the plant as the plant needs them.

  9. dishboy

    dishboy LawnSite Fanatic
    from zone 6
    Messages: 6,174

    Or you could just open bag of alfalfa pellets and apply with a broadcast spreader, easy I guess....
  10. greenjeans_il

    greenjeans_il LawnSite Member
    Messages: 19

    Please be more specific; how much potassium is in alfalfa? How many bags of alfalfa will the other person need to effectively raise potassium levels in their soil? One bag will do the trick? Or several bags over a period of years?

    I don't think it's as easy as you imply and can certainly be more costly as opposed to achieving supreme results through the application of composted wood ash. Using alfalfa meal as a maintenance measure would be more appropriate where in this case to deal with a severe deficiency it would be faster and more economical to use composted wood ash.

    Please try not to be sarcastic. It's rude.


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