Charcoal as a fert? Is this good?

Well, in prehistory, early hominids used a "burn-and-slash"technique which involved burning all of the trees and grass in an area to both clear the fieldy, and supply the ground with charcoal as a fert for planting crop. I can make charcoal by wrapping several layers of aluminum foil around wood and tossing it in a fire. (Learned it in Art class few years back.) I could then mix crushed charcoal with soil. However, I don't want to do this if it's not going to even work, or could possibly ruin my chances of a nice grow. What do you think?

i was actually at the garden store today and they sold charcoal to mix in with soil. they said it helps remove soil impurities.

Charcoal is a 10 on the ph chart. It would burn the shit out of them. Have you ever seen a charcoal grill with the steel bottom completely rotted up by the ash? Just saying.

if you make your own charcoal I don't think it would be a good idea, I know farmers here burn the crops and then disc them into the soil (but the burn remains get well mixed in the soil, and they have time to mature into the soil for at least one season) for example, sometimes bean fields are burned lets say, in the winter, and then by next summer, the field is ready to go (skipping spring)...

get it?

yeah charcoal is a good nute but it needs to be ph'ed down BEFORE you put it on plants, ash is good to, ive used it for outdoor grows, ive never put it on growing plants but it is good for spreading around the area your going to grow in later