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Re: CULT: trace elements

  • Subject: Re: [iris-talk] CULT: trace elements
  • From: Gerry Snyder <gerrysnyder@mediaone.net>
  • 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 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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