[NAFEX] Sand as a source of silicon

K Q kumquat at operamail.com
Thu May 3 11:26:33 EDT 2007


Solubility in water: Very slightly soluble. Solubility limit approximately 120 ppm at pH levels below 10.

Do they mean solubility of the whole molecule, or as ions? In one case it still would not be available to a plant root hair.

> Date: Wed, 02 May 2007 09:03:59 -0500
> From: Lucky Pittman <lucky.pittman at murraystate.edu>
> Subject: Re: [NAFEX] Fwd: Tip for Greenhouse Growers: Add Silicon
> To: North American Fruit Explorers <nafex at lists.ibiblio.org>
> Message-ID: < at murraystate.edu>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> At 08:50 AM 5/2/2007, you wrote:
> > Anyone know of an organic source of silicon?  I know biodynamic 
> > gardeners use equisetum for a source of silicon.  Anything else?
> How about....SAND.
> It's not organic, since it's not a carbon-based molecule, but it is
> 'natural'.  SiO2.

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