Inspired by a documentary film about the amazonian black soil called Terra preta ,this year ive started making charcoal from the bushes and branches i get from cleaning my trees.I do it verry easy by igniting a pile of wood and carfully rack the charcoal underneath the pile by moving the top branches asside ,then water it to stop it burn to ashes.After i collect the charcoal,i mix it with a fertiliser high in N ( i use urine 1/8 parts water) and somme people let it sit to ,,charge,, with microbial life for 2 weeks before using it,but i use it straight away.Ive put a bucket of biochar mixed with 3 buckets of soil around my almonds.I dig a circular trench for each tree and then i bury the tera preta mix at the botom and on top i put somme normal soil.
The secret of Eldorado-the documentary film that inspired me to try this technique of soil improvement.
https://youtu.be/0Os-ujelkgw