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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Hi<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>This is a very interesting
discussion that has been up before. One of the most important kind organisms in
the soil for the uptake of minerals by plants is mycorrhiza fungi. Most plants (there
are exceptions like brassica) depend on that they provide sugar to the fungi and
the fungi provide minerals to the plants. The fungi extract minerals from other
matter even including grains of sand and stone using organic acids. So the question
is if the addition of sugar will also boost the mycorrhiza activity and in this
way more minerals will become available for uptake by plants. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Bjorn Dahlroth<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Från:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
digestion-bounces@lists.bioenergylists.org
[mailto:digestion-bounces@lists.bioenergylists.org] <b><span style='font-weight:
bold'>För </span></b>Anand Karve<br>
<b><span style='font-weight:bold'>Skickat:</span></b> den 16 november 2010
01:52<br>
<b><span style='font-weight:bold'>Till:</span></b> For Discussion of Anaerobic
Digestion<br>
<b><span style='font-weight:bold'>Ämne:</span></b> Re: [Digestion] vermiculture
of digested solids</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Dear Theo,<o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> It is an accepted principle in agriculture that there is direct
and positive correlation between the population densiy of
micro-organisms in the soil and soil fertility. One applies organic
matter to the soil because one wants to increase the number of microbes
per unit of soil. This is best done by applying a small quantity of
non-composted, high calorie organic material to the soil and not by
applying predigested and composted organic material to an agricultural
field. You can test this just by applying a couple of grams of sugar to a
square meter of soil and you would notice, that with such a small quantity
of an organic carbon source, the microbial population in the
soil increases about 500 times, within 24 hours of application.
Thus, when a suitable organic carbon source is available to the microbes in the
soil, the microbes multiply their numbers, taking up the necessary minerals
directly from the soil minerals. Plants cannot take up the soil minerals
because the soil minerals have a very low solubility. But the microbes can
absorb them even from solutions having minerals in PPM or PPB
concentration. When the organic carbon source has been exhausted, the
microbes die due to starvation, releasing the minerals sequestered in their
body. These minerals, now in the form of enzymes, co-enzymes, proteins etc. are
highly water soluble, and they become available to the plants. Literally
thousands of farmers in the region of India where I live, have started to use
this technique. They apply either <st1:metricconverter ProductID="25 kg" w:st="on">25
kg</st1:metricconverter> sugar or <st1:metricconverter ProductID="125 kg"
w:st="on">125 kg</st1:metricconverter> green leaves per hectare to their
field, once every two or three months, and get good yields. It amounts to
soil mining, but just one meter thick layer of soil contains enough minerals to
support agriculture for 25,000 years. And new soil is continuously
being formed due to geological processes. So, don't worry that the
minerals in the soil would ever get exhausted. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Yours<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>A.D.Karve <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Mon, Nov 15, 2010 at 8:23 PM, <<a
href="mailto:bennett@frognet.net">bennett@frognet.net</a>> wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Not to answer this, but
to expand a bit.....<br>
Is there documentation backed by laboratory research that tells the<br>
"fertilizer values" of the digested solid wastes resulting from
methane<br>
production? Would the vermiculture add to those nutrient values?<br>
Thanks.<br>
><br>
> Referring to the question about vermiculture. Why should you want to<br>
> use vermiculture when you have already digested solid waste that could<br>
> be applied to the fields directly? With raw manure, I could see the<br>
> advantage, as you would get a somewhat dry, concentrated and easy to<br>
> apply organic fertilizer, without the acidifying effect of manure. Is it<br>
> the reduction in volume that is an advantage? Or are people used to<br>
> using vermiculture organic fertilizer and do not know the usage of<br>
> digested solid waste? Maybe somebody has some thoughts about this. Do<br>
> you apply liquid waste to the composting heaps (the liquids which<br>
> remains when separating digistate into solids and liquids?) to keep it<br>
> moist?<br>
><br>
> Thanks<br>
><br>
><br>
><br>
> Theo Bijman<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> Matt and listers, Hello,<br>
><br>
> There are two projects in South India doing vermiculture of digestate:<br>
> SKG Sangha and VK-Nardep that have been highlighted on the list, as they<br>
> both won Ashden Awards. There are videos available for both projects,<br>
> although the one for VK-Nardep is a sequence of still photographs taken<br>
> at the time of the judge's visit.<br>
><br>
> The Ashden Award links are: <a
href="http://www.ashdenawards.org/winners/skgsangha" target="_blank">www.ashdenawards.org/winners/skgsangha</a><br>
> <<a href="http://www.ashdenawards.org/winners/skgsangha" target="_blank">http://www.ashdenawards.org/winners/skgsangha</a>>
and<br>
> <a href="http://www.ashdenawards.org/winners/vknardep" target="_blank">www.ashdenawards.org/winners/vknardep</a><br>
> <<a href="http://www.ashdenawards.org/winners/vknardep" target="_blank">http://www.ashdenawards.org/winners/vknardep</a>>
. A direct link to SKG<br>
> Sangha is: <a href="http://www.skgsangha.org/" target="_blank">www.skgsangha.org</a>
<<a href="http://www.skgsangha.org/" target="_blank">http://www.skgsangha.org</a>>
and to<br>
> VK-Nardep is: <a href="http://vknardep.org/" target="_blank">vknardep.org</a>
<<a href="http://vknardep.org/" target="_blank">http://vknardep.org</a>>
.<br>
><br>
> Regards,<br>
><br>
> David Fulford<br>
><br>
> On 11/11/2010 01:33, Matt Lorig wrote:<br>
><br>
> There was a project mentioned on the list (maybe a year or two ago)<br>
> about a vermiculture project using the digestate from a biogas plant.
I<br>
> think it was in India. I think they were using sawdust to soak up
the<br>
> water and composting it for a period of time and then introducing the<br>
> worms. I can't find the link now. Does anyone remember what
I'm<br>
> talking about? Or does anyone have any info about vermiculture
combined<br>
> with biogas?<br>
><br>
> Matt Lorig<br>
> <a href="mailto:mattlorig@yahoo.com">mattlorig@yahoo.com</a> <mailto:<a
href="mailto:mattlorig@yahoo.com">mattlorig@yahoo.com</a>><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> _______________________________________________<br>
> Digestion mailing list<br>
><br>
> to Send a Message to the list, use the email address<br>
> <a href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a><br>
><br>
> to UNSUBSCRIBE or Change your List Settings use the web page<br>
> <a
href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org"
target="_blank">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a><br>
><br>
> for more information about digestion, see<br>
> Beginner's Guide to Biogas<br>
> <a href="http://www.adelaide.edu.au/biogas/" target="_blank">http://www.adelaide.edu.au/biogas/</a><br>
> and the Biogas Wiki <a href="http://biogas.wikispaces.com/" target="_blank">http://biogas.wikispaces.com/</a><br>
><br>
><br>
<br>
<br>
--<br>
May your troubles be less, your blessings more,<br>
and may nothing but happiness, come through your door.<br>
<br>
<br>
<br>
_______________________________________________<br>
Digestion mailing list<br>
<br>
to Send a Message to the list, use the email address<br>
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<br>
to UNSUBSCRIBE or Change your List Settings use the web page<br>
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target="_blank">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a><br>
<br>
for more information about digestion, see<br>
Beginner's Guide to Biogas<br>
<a href="http://www.adelaide.edu.au/biogas/" target="_blank">http://www.adelaide.edu.au/biogas/</a><br>
and the Biogas Wiki <a href="http://biogas.wikispaces.com/" target="_blank">http://biogas.wikispaces.com/</a><o:p></o:p></span></font></p>
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<br>
-- <br>
***<br>
Dr. A.D. Karve<br>
President, Appropriate Rural Technology Institute (ARTI)<br>
<br>
*Please change my email address in your records to: <a
href="mailto:adkarve@gmail.com">adkarve@gmail.com</a> *<br>
<br>
<br>
<o:p></o:p></span></font></p>
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