<div dir="ltr">See comments below.<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Apr 22, 2013 at 1:13 AM, Crispin Pemberton-Pigott <span dir="ltr"><<a href="mailto:crispinpigott@gmail.com" target="_blank">crispinpigott@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">Dear Jeff<u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">Thanks for that contribution.<u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">The point of Paul’s description is that in the circumstances where he is, it works. It works on several levels and it will probably continue to work for a long time.<u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">The scenario was discussed on this list several times before, going back years, but there was nowhere that all the ingredients were present. One of the things that makes the rice hull char attractive is the existence, on a big scale apparently, of land that benefits from the addition of the char, and growing of crops that benefit from it.<u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">There have been many claims made for biochar which, based on what I read and hear from people who read much more broadly, that don’t stand up to close scrutiny. </span></p>
</div></div></blockquote><div><br></div><div>Crispin, I take issue with this statement. The biochar research that I have been involved with (that is, biochar from my gasifiers) has been done in three different countries, and it involved seven universities. More than 20 experiments have been carried out, and in none of these experiments did biochar have negative effects. Contrary to what you might believe, this research does stand up to close scrutiny. These people are not just reading about biochar, but they are actually doing biochar research. I know many of these researchers, and they are not engaged in deceit. They are trying to help poor farmers understand the benefits of biochar.<br>
</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">The same holds for permaculture </span></p>
</div></div></blockquote><div><br></div><div>What's wrong with permaculture? <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="EN-CA">
<div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">and improved stove and lots of things, so there is nothing ‘special’ about char, it is just that people get enthusiastic about something and wish it were universally true.</span></p>
</div></div></blockquote><div><br></div><div>Crispin, it is hard for me to believe that you actually wrote this!<br>How do you know that that there is nothing special about biochar?<br>Is this your field of expertise?<br>
Have you actually been involved in biochar research?<br>I strongly suggest that you read the following: <br><br><a href="https://dl.dropboxusercontent.com/u/22013094/Biochar/Agronomy_Carter%20et%20al%202013%2002%2017.pdf" target="_blank">https://dl.dropboxusercontent.com/u/22013094/Biochar/Agronomy_Carter%20et%20al%202013%2002%2017.pdf</a><br>
<a href="http://www.lrrd.org/public-lrrd/proofs/lrrd2501/chha25008.htm" target="_blank">http://www.lrrd.org/public-lrrd/proofs/lrrd2501/chha25008.htm</a><br><a href="http://www.lrrd.org/lrrd23/2/siso23032.htm" target="_blank">http://www.lrrd.org/lrrd23/2/siso23032.htm</a><br>
<a href="http://www.lrrd.org/lrrd24/2/siso24026.htm" target="_blank">http://www.lrrd.org/lrrd24/2/siso24026.htm</a><br><a href="http://www.lrrd.org/lrrd24/2/siso24039.htm" target="_blank">http://www.lrrd.org/lrrd24/2/siso24039.htm</a><br>
<a href="http://www.lrrd.org/lrrd24/2/siso24034.htm" target="_blank">http://www.lrrd.org/lrrd24/2/siso24034.htm</a><br>
<a href="https://dl.dropboxusercontent.com/u/22013094/Biochar/Biochar%20utilization%20in%20Rice%20crop%20on%20Tuk%20Vil%20Luvisol.pdf" target="_blank">https://dl.dropboxusercontent.com/u/22013094/Biochar/Biochar%20utilization%20in%20Rice%20crop%20on%20Tuk%20Vil%20Luvisol.pdf</a><br>
<a href="http://www.lrrd.org/lrrd24/11/leng24199.htm" target="_blank">http://www.lrrd.org/lrrd24/11/leng24199.htm</a><br><br>If you really want to understand the benefits of biochar, please read this book:<br><a href="https://dl.dropboxusercontent.com/u/22013094/Biochar/Johannes%20Lehmann%2C%20Stephen%20Joseph-Biochar%20for%20environmental%20management_%20science%20and%20technology.pdf" target="_blank">https://dl.dropboxusercontent.com/u/22013094/Biochar/Johannes%20Lehmann%2C%20Stephen%20Joseph-Biochar%20for%20environmental%20management_%20science%20and%20technology.pdf</a><br>
<br></div><div>The people who wrote and edited this book are not charlatans. They are not deceitful. They are as good in their science as anyone could possibly be. <br></div><div>Crispin, the moment you start doing biochar research of your own, then you might have something serious to say in this regard.<br>
</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u><u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">No problem, we can live with filters on information to sift out what is beneficial and in what circumstances the claims how true. Independent investigation will support it if it is.</span></p>
</div></div></blockquote><div><br></div><div>Then do the independent investigation yourself. <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">As I understand if, the Japanese have being doing this the longest and they are very circumscribed about what claims are made for biochar. </span></p>
</div></div></blockquote><div><br></div><div>Some of the best biochar research was done by the Japanese (Ogawa et al) back in the early 90's. They showed how biochar positively impacts the growth of AM fungi. This is explained in the book by Lehmann and Joseph.<br>
</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">It is particular soils, particular crops and particular treatment of the char (temperature, species) that are in combination, what gives improved results. This theme constantly appears in the literature. As has been pointed out, just randomly putting char into soil can have negative consequences – it depends on the soil conditions. The last thing we need is a case of the char causing more harm than good while claims are made that it is improving things. The stove community should be working with agricultural trials experts.<u></u><u></u></span></p>
<p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">I read in the past that adding rice hull ash to rice fields is beneficial – maybe because the silica is extra-available, don’t know. Not my field. </span></p>
</div></div></blockquote><div><br></div><div>If this is not your field, then on what authority do you base your statements about rice hull biochar or rice hull ash?<br></div><div>Again, I challenge you: do the research, as Preston, Leng and Shackley have done.<br>
</div><div>What upsets me here is that I know well some of the people who have been conducting research with rice hull biochar.<br></div><div>They know agriculture quite well, they have impeccable scientific credentials, and they, unlike you, are experts in this field.<br>
</div><div>Then you come along, without any basis in fact, and question their research as not being scientific.<br></div><div>Wow! <br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-CA"><div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">I am just glad we have a working example of using gas and char that makes economic sense. </span></p>
</div></div></blockquote><div><br></div><div>It only makes economic sense, Crispin, if biochar plays a positive role in promoting plant and animal growth. If biochar does not play a positive role, we might as well burn it.<br>
<br></div><div>Thanks.<br></div><div>Paul Olivier<br></div><div><br></div><div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="EN-CA">
<div><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u><u></u></span></p>
<div><p><span style="color:rgb(31,73,125)"><u></u> <u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">Regards<span><font color="#888888"><u></u><u></u></font></span></span></p>
<span><font color="#888888"><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)">Crispin<u></u><u></u></span></p><p><span style="font-size:11pt;font-family:"Calibri","sans-serif";color:rgb(31,73,125)"><u></u> <u></u></span></p>
</font></span></div></div></div><br>_______________________________________________<br>
Stoves mailing list<br>
<br>
to Send a Message to the list, use the email address<br>
<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.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/stoves_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br>
<br>
for more Biomass Cooking Stoves, News and Information see our web site:<br>
<a href="http://stoves.bioenergylists.org/" target="_blank">http://stoves.bioenergylists.org/</a><br>
<br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br>
<br>Louisiana telephone: 1-337-447-4124 (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a>
</div></div>