ANNOUNCEMENT
Aug 2007: E-seminar in "Dark Earth Soils used by the tribes of the Amazon" Venue:
or
subscribe for discussion messages by email (send a blank email to iobb-darkearthsoils- snipped-for-privacy@googlegroups.com)
Background paper: Dark Earth Trial (June, 2006 to December 2006)
The most commonly used Native American technology was mulched raised beds, constructed on the contour to prevent runoff. This basic system of production was used from Chile to Canada, and everywhere in between. With tied ridges periodically connecting these beds, 100% of the rain can be harvested to increase crop production. Since the raised beds also hold roots up above the water level, the method is beneficial in both wet and dry years. This also eliminates erosion as it increases productivity. Mel believes that use of this basic system is the quickest way to achieve productive, sustainable crop production. But for the best results, he suggests the eventual production of "dark earth soils" such as were used by the tribes of the Amazon River Basin. With help from friends in a variety of academic fields, Mel has developed a method of reproducing these highly productive soils using a variety of organic waste products.
Over the last five years he has studied and experimented with the process and is now ready to begin teaching others the basics of dark earth soil production. It is his hope that others will experiment with the soils and develop replicable methods for their production on a large scale. Much work has been done, focussing on the charcoal content of the soils. But, Mel believes the high humus content is equally as important to sustainable production with these soils. Since the greatest quantities of humus are produced during anaerobic decomposition, he uses a method similar to an in ground silo to produce the soils from a combination of biomass and charcoal.
regards Jacky Foo