Re: CULT: trace elements
- Subject: Re: [iris-talk] CULT: trace elements
- From: G* S*
- Date: Sun, 26 Aug 2001 13:47:37 -0700
gmbeasle@aol.com wrote:
>
>
> Trace elements are elements like zinc, copper, iron, sodium, calcium, etc.,
> that you just find really small amounts (traces) in whatever medium you are
> talking about, be it soil or blood or whatever. A lot of times these
> elements are needed in very small amounts for proper growth.
I don't think calcium should be called a trace element. It is
plentiful in soil, and when Allan Ensminger had iris (stalks
and/or leaves) chemically analyzed, calcium was the main
constituent. I suspect that the analysis technique did not
measure carbon, oxygen, hydrogen, or nitrogen.
Calcium would be a major part of fertilizers, except that
it is never/rarely/seldom deficient. Actually, I guess it
is a major component in some fertilizers, but is not
listed as an "active ingredient."
Gerry
--
g*@mediaone.net
Gerry Snyder, AIS Symposium Chair, Region 15 RVP
Member San Fernando Valley, Southern California Iris Societies
in warm, winterless Los Angeles--USDA 9b-ish, Sunset 18-19
my work: helping generate data for: http://galileo.jpl.nasa.gov/
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