Farmers reuse their soil every year, so do I. I recycle it through my composter, adding green and brown materials as they become available. After a year I have a rich brown humus, which I freshen with wormcasts and/or horseshit, perlite and lime.
It works a treat.
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This lady yielded
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Recycling your soil isn't the same as just using used soil.You're adding things(like you said) to it.
But thats a good thing because it adds the good bacteria back to the soil.
I'm going to do that same thing for next years grow.
I re used my holes this year(that I grew in last year) with clones compared to a few clones with fresh soil (same strain and size).
I didn't add anything to the used soil like you did.There were no comparison.
The plants in new soil outgrew the used soil by almost twice as much.
This was a big issue(used soil) for me this year because I grew over 50 plants in my used soil.The holes in the ground with this used soil were large.About 30 gallons.I only lime the holes earlier that year.
It would be massive amounts of work to replace all these holes with soil.I'll try to replace about a quarter of this soil with fresh soil for next year.