Some 19th Century References on Biochar Use in Europe and America

Some Citations on Biochar in Europe and America in the 19th Century

Biochar, the promising expedient of adding charcoal as a soil amendment, is often represented as a recent discovery of a very ancient technique originating in South America.  But, the research I’ve been doing lately shows that its use probably has more of a history than we may think and may have been gaining momentum among European and American horticulturalists in the 19th century. I will present all of that research here after a short introduction.

As a keen experimenter, super geek and infoholic interested in what are now mostly considered archaic arts, I find myself frequenting online archives of old books to find knowledge on various subjects.  The most searchable and useful of these that I know of is the arm of our big brother  known as Googlebooks.  This is an astounding tool for the type of research I do!  Wow!  I have collected over the last 2 and a half decades any interesting books I can find on various archaic subjects such as glue making, argiculture, electricity, casein, animal fats, tanning etc… Those books have been hard won by perusing used book stores, flea markets, junk shops and yard sales, but in the end often amount to little in the way of information when I go to consult them on this or that subject.  Sometime a couple of years ago I ran across a reference to something called  biochar.  I had always wondered if charcoal might be either useful or detrimental when added to soil, so I looked into it a little.  I found a collection of enthusiastic experimenters making claims about the greatness of adding specially burned charcoal to the soil.  I was intrigued by some of the evidence, but it was all good news, which generally raises red flags for me and I was hesitant to jump in with both feet preferring to wait a bit for more research and more information, both old and new, to become available.  The information available on the net has exploded since then.  In the meantime, I’ve instructed everyone in the house to pick the charcoal out of the fire in the morning before relighting it and have also salvaged charcoal from campfires and brush burn piles and we have accumulated enough to start experimenting.