Paul; Thanks for your sage advice, and for clarifying the chain of reasoning.
For those unaware of Paal Wendelbo grass bundles, you can find a photograph of Vetiver grass bundles at http://haitireconstruction.ning.com/page/vetiver-grass-bundles and videos with infectious enthusiasm. In bundles, the coarse stems and leaves provide vertical channels for primary air movement in a TLUD. An interesting thing about these coarse grasses, is that if they are anything like maize, their stems may not very good at building stable soil organic matter, despite their huge yield. When maize stems decompose, they are too course and fibrous to interact much with the soil and become part of the soil fabric. If the same applies to other coarse-stemmed grasses, then making them into biochar in cookstoves is a very good way of getting their carbon fixed into soil organic matter. Cheers, Julien. -- Julien Winter Cobourg, ON, CANADA _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://stoves.bioenergylists.org/
