
One of my goals for this year is to make a biogas to run my propane grill, and while doing research for that goal I ran into articles about biochar. Biochar is basically defined as charcoal used for agricultural purposes. We all have probably seen or used charcoal in our BBQ grills, but most of that isn't good for the garden. In fact most of the commercial charcoal we buy at the store is made with chemicals we don't want in our garden bed. Biochar on the other hand is simple to make and is a great amendment to the garden.
Biochar isn't some new soil amendment either, to really find its start we have to go back in time to the ancient amazons. No one is really sure as to how or why the ancients started to make and add the biochar to their farmlands, but even today those farmlands are rich in fertility. What is known is that the biochar helps to retain nutrients and water in the soil, helping to prevent nutrient loss to leaching. This rich farmland is known today as Terra Preta.