Re: [compost_tea] pathogenic fungi

From: <soilfoodweb_at_aol.com>
Date: Fri, 13 Jun 2003 15:41:38 EDT

Can pathogens be aerobic or anaerobic?

Yes. Fungi that cause necrosis on roots need to be able to function in
aerobic conditions. But they will generally be outcompeted in the root zone by
beneficial aerobic fungi.

That's why the "worst" fungal pathogens tend to do better in slightly oxygen
reduced to anaerobic conditions. the competitors are gone or not functional.


Once oxygen content drops to really low oxygen conditions, true anaerobic
conditions, the fungal pathogens can't grow either. So it's a range 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 Fri Jun 13 2003 - 18:19:35 EDT

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