On Dec 6, 3:48 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > ... > Are there any known negatives > about biochar? Any idea of the economics involved?
Biochar is almost surely to include some VOCs (volatile organic carbon compounds). More than just a little of this is quite bad. Some tests suggest that soils with 30% biochar have overdone it and radishes won't start. On a large scale, assuming no centralized source of dry biomass collected for other reasons, the cost will be about $120--150 per tonne once spreading costs are included. Very oten biowastes are collected anyway during harvest, dropping the cost down to around $75 per tonne after spreading. Modest amounts produce impressive returns on investment for both maize and wheat (probably other crops as well). Here is a useful link for you: http://terrapreta.bioenergylists.org/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "globalchange" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange?hl=en -~----------~----~----~----~------~----~------~--~---
