http://biochar-books.com/

biochar

Because biochar is rooted in an ancient, proven practice, farmers feel empowered to experiment and are beginning to accumulate and document their results. But because biochar is new to science, it is not always possible to account for these results in a predictable fashion.  We are fortunate to have a vibrant, grassroots movement of biochar practitioners who are so generous in sharing their results with us. When practice and theory advance to the point where they meet in the middle, then we will truly see a biochar revolution.