I found this book in last week in Oxford last week, Blackwells Broad Street branch. it just jumped off the shelf. I have known about biochar for some years but not used it in the garden. With the new plot and talk about sequestering CO2 and making better use of nutrients it could not have come at a better time.
What I like about the book is that there is some history, the use of biochar goes back to 450 BCE – 950 BCE. The soils from that era are still black, it lasts locking up atmospheric CO2 for centuries. There is a section about how it works and very useful practical information about making biochar in either in a burn pit or a TLUD: top lit up-draft gasifier.
Making a TLUD from a couple of steel barrels look relatively straight forward so that is what I will do.
It fits in nicely with the yearly timetable as I am just about to start preparing the soil for the winter. I will post some pics of the TLUD build progress soon.