^^^This is my thoughts as well.
Will adding em-1 hurt? No, not at all. It's good stuff. Would I run out and spend $35 on a bottle to help break down root balls? No way. Our soils are a huge microbe consortium. Keep the environment hospitable and the population will explode. I'm in week three of flower, and I bet if I pulled on one of the stalks from last round, it would come right up. I'll leave it there till they fall over and decompose in the soil.
Peace!
P-
that's exactly what happens to mine, the roots sorta dissolve and the stem will topple over easily.
I have to literally slice a spot open to allow my new plants to wedge into the existing roots of the prior harvested plant, the roots are very dense even in my 15 gal pots, and it actually works better than transplanting into fresh soil, the conventional way. The soil is already established, I use smartpots so it's nice to have a "structure" already there, the soilweb holds the perfect amount of water also, and that's not even mentioning the microbial life and worms/vermicompost in the soil.
One of the reasons I keep my legumes growing too, I have some that are into their second harvest and I have to tie them down to not shade my new round of flowering girls.
It's all a happy family. We are simply creating a smaller microcosm of the natural world (the un-molested part, that is)
Another thing is an established soilweb seems to retain the perfect amount of water too, sometimes when transplanting clones or seeds their root system isn't large enough to help transpire or "use up" the water in the container, which can sometimes lead to root issues/gnats/ or even the contrary with dryspots forming near the roots because you wait too long for the entire pot to dry out.
All that happens frequently when you are relatively new to the whole concept. Sometimes I can see why people are intimidated by all the science and biology involved.
Not that hard though, especially if you make your own vermicompost and reg compost, those two things done correctly will give you a
HUUUUGE margin of error.