I'd like to know the absolute simplest method to charge biochar - a method that will be simple to train and implement. My goal is not perfect but "good enough". (A Michael Shaferism.)
Sun24 hopes to partner with the Catholic and Anglican Churches in Africa to train smallholder farmers to make and use biochar. Most farmers do not have easy access to manure. In Uganda, a maize planting is in a few weeks. I want to test this with several farmers.
Please give your thoughts on this charging method:
1. Dig a hole in the ground.
2. Put the char in the hole either as a batch or by regularly adding small amounts.
3. Urinate daily on the char.
4. If the farmer has access to manure, it can be mixed in at a 50:50 ratio.
I hope Steps 1-3 can stand on their own. In the upcoming maize planting we will only charge with urine.
Step 4 especially needs vetting.
Trainers can easily be trained on this method and families can easily learn and implement it.
Christa Roth recommended that the hole not be outside to avoid leaching. If the hole is outside, a mound should be built around it to keep surface water from flowing into it. Is leaching a significant concern?
Must the char be crushed to a certain size? Any other thoughts on effectiveness or improvements?
Kevin McLean, President
Tampa, Florida, USA
+1 (813) 505-3340