Here’s an update about the keyline cultivation system that I covered in a previous blog post titled Restoring Degraded Land. Building soil on degraded land is one of my biggest passions lately, because this is what the world needs now. Scientists say it takes nature between 100 to 1,000 years to form an inch of topsoil, depending on local conditions. The keyline system can form 4″ of good topsoil in 3 years by chiseling grooves in the ground with a simple farm implement.
