Potato
This is Puffergas' first test of growing potatoes in switchgrass compost. The potatoes were grown in containers and charcoal was added to the compost.
See link below:
Potato 2007 by Puffergas
Gasification
Potato & Terra Preta - 2007
Submitted by jeff davis on Sat, 2007-12-29 01:23.Conversion of Municipal Solid Waste (MSW) into Charcoal & Producer Gas
Submitted by Tom Miles on Fri, 2007-04-20 04:02.Philip Small Blog: Making Charcoal with an Inverted Downdraft Gasifier
Submitted by Tom Miles on Tue, 2007-02-13 06:22.Phillip Small Blog: Making Charcoal with an Inverted Downdraft Gasifier
Phillip Small,February 10, 2007
Phillip Small described how he uses an inverted downdraft gasifier inspired by Tom Reed and Ray Garlington to make charcoal for soil fertility experiments.
Inverted downdraft gasifier photos on Flickr
From the Hypography Science Forumi - TerraPreta
