Re: [compost_tea] Re: C:N

From: David Anderson <squtch_at_gmail.com>
Date: Tue, 21 Dec 2004 12:09:44 -0800
Building compost is not simple math based on those magic ratios.

In the case of any wood product other than ultrafine dust, you are
very unlikely to fully consume the particle of wood in a 3 week hot
pile, so you cannot consider all the carbon useable.

Actually, the numbers that I have seen for wood runs much higher, more
in the 600:1 range. I suppose that they are suggesting the lower
number as what is available for use on the surface of normal sawdust.

Dave

On Wed, 22 Dec 2004 08:41:38 +1300, L Blair <rlbct_at_clear.net.nz> wrote:
> If I was using sawdust ( say 175 and and so carbonaceous) and legume hay (15
> and nitrogenous) to
> make compost and used the 30:1 suggested ratio by weight, I would have
> (175 x 30) + 15 = 5265 parts Carbon, and (1 x 30) + 1 = 31 parts Nitrogen.
> Dividing by 31,
> I get C:N of 175:1 to start composting with.

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Received on Tue Dec 21 2004 - 18:52:45 EST

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