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  • From: "John D'hondt" <dhondt@eircom.net>
  • To: "permaculture" <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] Humus
  • Date: Sun, 13 Nov 2011 18:15:54 -0000

Since I have no google + account it is hard to say. But humic substances are definitely complex organic molecules and some of these are known to influence plant tissue permeability for other molecules.
john

----- Original Message ----- From: "Lawrence F. London, Jr." <venaurafarm@bellsouth.net>
To: "permaculture" <permaculture@lists.ibiblio.org>
Sent: Sunday, November 13, 2011 3:59 AM
Subject: Re: [permaculture] Humus


On 11/12/2011 7:14 PM, John D'hondt wrote:

There are quite a few nitrogens in humic acid which might account partly for
the fertility it imbues but to me the structure of the molecule has always

Humus is a molecule? Is this it:

https://plus.google.com/photos/103323666932740258290/albums/5674323837311144993

(load all text in both the two lines about into the url dialog box in
your browser)

made me think of a soil hormone, of something with a messenger function.
john

In soil science, humus refers to any organic matter that has
reached a point of stability, where it will break down no further
and might, if conditions do not change, remain as it is for
centuries, if not millennia.

The meaning of the term humus has changed over time. To jumble together
several interpretations of the term in the Wikipedia definition doesn’t do
justice to any of them. Nor does it bring us any closer to what humus
actually is.

In my book, humus is a living organism that is in constant
transformation - that never stops to break down, to transform and to
rebuild itself. It is the dynamic interface between the organic and the
non-organic, the place where life on this planet constantly renews itself.
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