Biochar Trials at Fourth Corner Nursery
Richard Haard, Fourth Corner Nursery, Bellingham, WA, December 6, 2007
Hello All - For your interest

I submitted to Tom for posting [attached] some initial soil analysis data from my charcoal block study. In am just beginning to compile a report on this work. When it is posted you will see soil analysis results averaged for each replication(2) for 2 dates , April and October. Listed are pH, Buffer pH, OM, Nitrate, Cation Exchange Capacity (CEC) and base exchange components, % Potassium, % Magnesium, % Calcium. Other soil analysis was taken but not presented here.

Keep in mind this is a 2 to 3 year study and no additional additions or treatments will be done other than continuous cropping and harvest of all growth, tops and roots, at our bare-root native plant nursery. It is my attempt to emulate Christoph Steiner, et al research in Manaus

Long term Effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil

http://terrapreta.bioenergylists.org/node/442