I think you are right that the making of biochar vs charcoal is all about the maker’s intent. But I would not rest easy until I know the biochar is committed to the destination for which I intended it. I lived in the Dominican Republis for a while, and it would have been a very bad idea to leave chunks of biochar lying on the ground! They would have been quickly “found” by the local poor Haitian farm workers and put to their traditional use - cooking.
I am doing some experiments right now with making and eventually growing with biochar. The US Forest service says biochar can be added to woodland soil at a rate of about 270 tonnes per hectare - any idea how that works out, or what mix rate range might be good for adding biochar to garden soil. My plan is to try a range of ratios and characterize my soil by sand:silt:clay proportion - I guess clayey soils might benefit from a higher proportion of biochar.
I think you are right that the making of biochar vs charcoal is all about the maker’s intent. But I would not rest easy until I know the biochar is committed to the destination for which I intended it. I lived in the Dominican Republis for a while, and it would have been a very bad idea to leave chunks of biochar lying on the ground! They would have been quickly “found” by the local poor Haitian farm workers and put to their traditional use - cooking.
I am doing some experiments right now with making and eventually growing with biochar. The US Forest service says biochar can be added to woodland soil at a rate of about 270 tonnes per hectare - any idea how that works out, or what mix rate range might be good for adding biochar to garden soil. My plan is to try a range of ratios and characterize my soil by sand:silt:clay proportion - I guess clayey soils might benefit from a higher proportion of biochar.
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