So you keep the cover crop throughout plant life? And the imprint thing. Is this done jus to make transplant less stressful or are you saying put 2g (veg)size container into final flower and then let soil age in this final pot with "dummy" container. ? And is this when you would putLegumes in as well? Great info. I always learn something new reading your post greasemonkeyman !
I'm flattered you find my posts informative, I only try to help, and I am always learning myself, even after more than a couple decades of doing this.
I keep my cover crop going always. But I resow them every time I top dress with vermicompost or anything else that will cause a die off.
The imprint, to my knowledge, is mainly about not destroying the soil food web that's established in your planter. That's one of the main concepts to notill; not destroying the soil food web. The rhizosphere (the top 2 - 8 inches of soil) is essentially where most of the life of your soil is. When you tear apart your soil to put a new plant in, you destroy the very complex Web of life that was established (if you set up your soil in your planter prior to transplant that is).
Yes, you got it exactly, the imprint is to simply make the transplant 100% shock free, assuming you don't mongo the roots in the process.
And I also keep my cover crop going, in fact I have some flowering legumes that are going right now, next to my mango kush, all in one happy smartpot.
notice one of my redwood trees behind it.
Another advantage of using legumes to establish a good soil is when you freshly transplant (in a smartpot) the roots don't give the soil enough tension or sturdiness so when you move around the smarpots you are likely to disturb the soil, the roots from the legumes act like a "binder" so to speak, and therefore the smartpot has some sort of "structure" as is, and you are less likely to disturb the soilweb, yet another advantage of that is you are WAY less likely to ever overwater, which is a common mistake for beginners, because the legumes have an established root system already.
I added a couple pics too, the first is a legume that actually will go on for two harvests.
the second is merely a pic of the old cannabis stump behind the legume.
I'll take a pic of the flowering room and all the legumes in there, it's a jungle