New biochar design made with a reclaimed sink.
It has the optimal depth for converting fire wood into perfect charchoal rather than ash.
A simple but important design, that mean we can use the wood as a fuel to cook with and its byproduct - charchoal - is activated into biochar.
Biocar is a vital ingredient in our soils and animal feed. We have done continual experimentation in our market garden soil and forest garden terraces, comparing beds with compost, to ones with nothing added, to ones with bio-char and then to ones with both compost and biochar. We have found that a constant and considerably noticeable improvement in bed fertility and crop health was found in the bed with compost and biochar, both working together beautifully. Due to the microscopic fractures in biochar, nutrients and microorganisms are absorbed and held, which get released slowly. Therefore a mix of compost and biochar is optimal as the compost remains in the biochar to be released into the bed consistently over time rather than the nutrients being washed out with run off from rain.
More importantly, we use biochar for carbon sequestration. Biochar, when made sustainably, is carbon negative as it transforms carbon from the biomass used into stable carbon structures. These carbon structures are locked and as such sequestered in soil for thousand upon thousands of years.
So by making use of the fire we enjoy through converting the charchoal into biochar we can work to reduce the amount of CO2 in the atmosphere and improve the fertility of our soils.
Blog entry by Frida Lotz