Making Biochar to Farm in Sand

I live in Michigan with almost pure sand. We get a lot of rain, which destroys normal organic matter. I learned that biochar works similarly to compost and actually lass in my soil. We've been making a few tons from tree trimmings and firewood waste with no special equipment. Here's the process. https://youtu.be/YUDIwLL9hYQ?si=KmUwZej40gOL7N7b