Making biochar with oyster and coconut shells

This study featured some interesting breakthroughs:
More humus being created
Different microbes that help break down materials, and
Improved seed growth.
Partially attributed to increased Calcium in the soil.

Check it out:

John S
PDX OR
https://link.springer.com/epdf/10.1007/s44246-025-00249-x?sharing_token=kggGaKvl8pei2QvEldzZKve4RwlQNchNByi7wbcMAY4xjQ6bN2KYRiwpmDf5U1VZ9tSbw4O2fEADZ_nixSO-O8-NwE9yOxTqg3OC_2Nxie4fEUo0DWkI5VI7vX_S14gy2UN3G7fqERmHCp5OOYci5T9pXlvnX0CCWfj7QxJqi1Q%3D

Well, the title of the study suggests a lot of moving parts (see below), but the implications are interesting. Should I include my eggshells into a biochar process instead of simply crushing them in the compost? My tomatoes want to know!

I do eat oysters sometimes, and I think I'm going to put some in there next time.  It sounds like it could have some good effects.  

John S
PDX OR