[Terrapreta] Fwd: transect points - Soil conference on non-CO2 gasemissions

[Sean K. Barry]

Hi Michael and All,

"It is interesting that NO2 isn't more in the news, considering its potential impact and its fascinating pattern of anthropogenicity<http://www.esa.int/esaCP/SEMBZNBE8YE_Protecting_1.html>".

I found this quote interesting, when one considers that charcoal in soil helps soil retain nutrients (including presumably nitrogen).  The largest source of "un-fixed" nitrogen in ag soils is human use of industrial nitrogen based fertilizers; anhydrous ammonia (NH4), and ammonia salts like ammonium bicarbonate (NH3HCO4), ammonium carbonate, and ammonium sulfate.  These are all water soluble, leach away from fields, and gas off partially, as NO2.

Forming Terra Preta soil, which, with soil microorganisms, potentially can fix these nutrient salts, may prevent nitrous oxide (NO2) release at the rates of normal agricultural soils.  This will combat the emissions this very potent green house gas.

SKB
  ----- Original Message ----- 
  From: Michael Bailes<mailto:michaelangelica at gmail.com> 
  To: terrapreta<mailto:terrapreta at bioenergylists.org> 
  Sent: Tuesday, May 15, 2007 4:54 AM
  Subject: [Terrapreta] Fwd: transect points - Soil conference on non-CO2 gasemissions



  To: michaelangelica <michaelangelica at gmail.com<mailto:michaelangelica at gmail.com>>


   

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        Here are the latest updates for michaelangelica at gmail.com<mailto:michaelangelica at gmail.com>


        "transect points<http://transectpoints.blogspot.com/>" - 1 new article 

        Soil conference on non-CO2 gas emissions<http://transectpoints.blogspot.com/2007/05/soil-conference-on-non-co2-gas.html>
         <http://bp2.blogger.com/_eNm730tnGbc/RkixqOtwYvI/AAAAAAAAAIk/mB0E0LK_Kcc/s1600-h/369102955_77000f1cb3.jpg>
        Researchers at the University of Melbourne are holding a conference<http://uninews.unimelb.edu.au/articleid_4219.html> to discuss the importance of greenhouse gas emissions from soils. 

        A major concern is nitrous oxide from fertilizer, manure and biomass applications. 


          "300 times more potent than CO2, so even small emissions of this non-CO2 gas can make a considerable contribution to global warming" says Dr Stefan Arndt. 

          "When nitrogen is added to a wheat field as fertilizer or added to a pasture through animal faeces or clover swards, a part of the nitrogen can be lost as nitrous oxide, and when the weather conditions are right this can lead to large emissions of nitrous oxide" says Dr Eckard. 

          ...not widely known [is] that soils can actually [take] methane out of the atmosphere. "Forest soils are especially efficient at taking up methane" says Dr Livesley. 

          At the present time there is not much knowledge about the magnitude of these non-CO2 emissions... 


        It is interesting that NO2 isn't more in the news, considering its potential impact and its fascinating pattern of anthropogenicity<http://www.esa.int/esaCP/SEMBZNBE8YE_Protecting_1.html>. 


        Image source: Greenhouse gases <http://www.flickr.com/photos/bonish/369102955/>, by Anyday.se<http://anyday.se/>

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