Here's an excellent current research piece on biochar production. A little weighty but well worth one's time.
This describes the technique I've found to work best on my site.
Dark America's Retro Future - SUBHEAD: Review of two books about the future of America by John Michael Greer. By Fred Kaminski on 13 February 2018 in Resilience - ( http://www.resilie...
2 days ago