[Jewelry making - Article 00164] - Re: [Orchid] Recycling investment

[John Dach]

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    To a point this is true, BUT only to a point. Limestone, often used
    as a soil amendment to raise Ph and add the needed calcium and
    balance the cat ion exchange ratio in the soil, it too is sterile. As
    is rock phosphate. As it other rock powders that are being used more
    and more as mineral sources. Actually N-P-K is sterile as is ammonia
    (what is often being directly shanked into the crop area as a
    nitrogen source. Lots of use in the plains states. It KILLS most
    everything as does salt nitrogen (Urea and the like,,,, the bagged
    commercial and boxed packaged for garden use). It is the N in the N-
    P-K mix, but the P and the K is also sterile and killing. Urea was
    used in WWII on pacific islands to get the sand to pack to make the
    runways more solid. It killed what soil life was there keeping the
    sand "lofted" rather than packed. 

    The sterility is not a problem. The materials is being added as a
    nutritional material not a biological material, but the biology
    already in the soil will utilize it as needed. If one has
    biologically active soil, the addition of more living organisms is
    not as important as feeding the biology that is already there and
    active. It won't hurt to add more biology via composts and such,
    can't do anything but help, but the organisms MUST be fed to keep
    them alive and happy so that they can do what they do. Soil and
    plant nutrition is MUCH MORE COMPLEX than what is generally dealt
    with in discussions about plant nutrition. 

John Dach
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