chatelot16 wrote:bone = calcium carbonate = limestone ??? no
the main bone material is calcium phosphate!
if we dissolve this calcium phosphate with an acid, only flexible oseine remains but we have dissolved the phosphorus in the acid [...] the less soluble phosphates are not completely insoluble: reduce them to powder the finest possible is a way to allow bacteria or fungus to enjoy it faster [...]
No, from tribasic calcium phosphate, I agree that it is there in greater quantity in the bones ~ 80% but there is approximately ~ 10% of calcium carbonate, but the crystaline structure follows the collagen fibers: calcium carbonates (etc. ). This is what I proposed to myself (hypothesis, I said "eventually") to attack with acetic acid (for example, but you have to see the dosage and the duration - what I want to attack is the carbonate to make it soft CaCO3 not the Ca3(PO4)2 - it is obvious that if you leave the bones too long, there will be the deleterious effect that you denounce. So it's a question of timing. This is why I said that it was necessary to freeze to stop the process. And thanks to your eagle eye, I would say that if the bone becomes brittle and crumbly, it should be crushed in winter and spread out on very cold days.
But hey, I'm only moderately satisfied with my miserable idea because the bones are not homogeneous, the hardest part is located at the joints. And basically, our chemist just told me that it was possible but that it had to be studied, on the other hand, we are both skeptical about the finality of all this, he believes that it would be better not to crush the bones, because we do not know the overall consequences on the soil, because here we are departing from the principle of the lazy gardener, we must let nature take its course ... Do not solicit it to the point of having to intervene ... This last point ties in with the word you just used: "enjoy»Is there really an interest in the physicochemical qualities of soils? => not sure. But nothing prevents to try in a corner ...