Biochar New & Groundbreaking, Introducing Miegos Biochar. Miegos biochar is charcoal used as a soil amendment. It is stable, solid, rich in carbon, and can endure in soil for years. The first of its kind in Egypt to be mass-produced. BENEFITS 1. Healthier soil. 2. Improves drought resistance. 3. Increases plant productivity. 4. Increases nutrients availability in the soil. USAGE 1. Top dressing: simply sprinkle your charged biochar on top of the soil and wet it. This is most effective if you layer the top of your soil with a compost and biochar mix. It is also common for gardeners to build up their soil fertility over time by adding an 80% compost and 20% biochar mix to the top of their soil, as required.Tilling: The conventional way to work soil amendments in is to use a tiller and mix it right into the soil. Hand Mix: If you are planting in pots, feel free to work the biochar around in your soil with your hands or a small rake.