[Digestion] Digestate comparison to liquid worm castings (Alexander Eaton)

[Chris Hearn]

Hi

We have seen that the wood tends to bind the nitrogen and reduce it bio-availability.  This is in New Zealand were most sawdust is Pinus radiata which is chemically quite different from most other pines.  Whether this will alter the binding is not known ( by me anyway).



Chris Hearn
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From: digestion-bounces at lists.bioenergylists.org [mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Matt Lorig
Sent: Sunday, 4 December 2011 10:23 a.m.
To: Digestion at bioenergylists.org
Subject: Re: [Digestion] Digestate comparison to liquid worm castings (Alexander Eaton)

Hello everyone,

I want to get a dry fertilizer product that I can bag and hopefully sell.   I have been planning to take my liquid digestate and add sawdust or something similar to dry it and then have the worms eat that.   I've read somewhere that if I was to filter and dry the digestate I would lose a lot of N with the water.  I know I would lower the Nitrogen percent by adding the sawdust but would I gain by not losing the Nitrogen with the water?  Also seems I would improve the fertilizer by having worm casts and more microorganisms from the worms gut.

I'm about ready to actually start this but since the subject has come up again I thought I should ask the list for comments.  It would be nice to know before I start if I'm wasting my time.

Matt Lorig
mattlorig at yahoo.com<mailto:mattlorig at yahoo.com>
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