Re: [compost_tea] Copper and CT

From: <soilfoodweb_at_aol.com>
Date: Mon, 28 Jul 2003 01:38:52 EDT

Reports in the scienitific literature say copper is toxic to a number of
bacteria at 3 ppm. As far as I have been able to discern, it is the bacteria that
are more susceptible to copper than the fungi. But we have not done testing
on copper concentrations in tea, mostly because I am happy with the research
papers on copper toxicity.

It's the sulfur that seems to take out many of the beneficial fungi. We have
some observation of this, but also a fair number of research literature
papers showing the same thing.

Elaine Ingham
President, Soil Foodweb Inc.
www.soilfoodweb.com
SFI Oregon, USA
SFI Australia
SFI New York
SFI Europe
SFI New Zealand

"Hope is not a feeling. It is not the belief that things will turn out well,
but the conviction that what we are doing makes sense, no matter how things
turn out." -- Vaclav Havel, former President of the Czech Republic





Received on Mon Jul 28 2003 - 01:55:58 EDT

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