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nafex - Re: [NAFEX] increasing organic matter in soil

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  • From: "Mark Angermayer" <hangermayer@isp.com>
  • To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] increasing organic matter in soil
  • Date: Thu, 18 Dec 2008 13:19:22 -0600

Hi Stephen,

I shouldn't have used the term "compost" in my original post. I meant
leaves, grass, and yard waste, which isn't really compost yet. I used the
term compost too loosely. The article was of interest to me because I haul
in at least 10,000 lbs. of yard waste per year. I also have a wanted sign
up in my front yard for grass clippings, leaves, and chipped wood. The sign
isn't that productive though, most yard waste I get comes from curb trolling
on trash day, when I'm in the city.

Mark
KS
----- Original Message -----
From: "Stephen Sadler" <>
To: "'North American Fruit Explorers'" <nafex@lists.ibiblio.org>
Sent: Thursday, December 18, 2008 11:45 AM
Subject: Re: [NAFEX] increasing organic matter in soil


> In that article, tt was that 10-20% of manure and cover crops remained in
> the soil as 'stable organic matter;' but it was also noted that compost
is
> more stable than those. A much higher percentage of composted material
will
> remain in the soil.
>
> Cover cropping is conversion of mostly pre-existing matter in situ to
active
> organic matter. Manure is also largely active - as opposed to stable -
> organic matter. I'm not at all expert in soil science, but my rough
> understanding is that that active organic matter will increase largely
> beneficial soil organisms, which make up a lot of the weight of soil, and
> cause other changes: the soil becomes easier to work, holds water better,
is
> better aerated, and more resistant to erosion and compaction, for example.
> Non-composted materials added to soil will compost actively, or fairly
> rapidly, compared to prepared compost.
>
> Prepared compost has already largely converted to stable (slow-converting,
> rather than active-converting) organic matter, and may come from outside
of
> the area it's tilled into; you get a direct increase of soil volume, and
> most of it is stable. The stable organic portion is important to help the
> soil maintain nutrients in place for crops. It's also the portion
> responsible for the wonderful dark color of well-tended soil.
>
> ~ Stephen
>
> -----Original Message-----
> From: nafex-bounces@lists.ibiblio.org
> [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of Mark Angermayer
> Sent: Thursday, December 18, 2008 9:00 AM
> To: North American Fruit Explorers
> Subject: [NAFEX] increasing organic matter in soil
>
> A lot of folks are trying to increase OM of their soil. This month, the
> Ontario fruit newsletter had a short interesting article about it.
> Interesting that only 10-20% of the weight of compost, actually ends up in
> the soil.
>
>
> http://www.omafra.gov.on.ca/english/crops/updates/soundadvice/dec08r3.htm
>
> Mark
> KS
>
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