To hormone or not to hormone.

I'm curious..
What do you folks use to treat the root cuts on say a large main root that needed to be removed such as what might be encountered collecting Yamadori. I, so far, have always made a clean cut and then powdered the whole cut end in rooting hormone in hopes of speeding callousing But this season I started to wonder should I use a wound sealant, waterproof glue, nothing? What do you folks use on those big roots that need a cuttin'..

I tend not to treat cut roots at all. Inspection on subsequent repottings has shown good rooting and callousing.
It would be interesting to hear a bit about you Motm as you just appeared without an introduction.

Rooting hormone is to force stem cells to form root cells. Applied to roots, it actually inhibits the formation of new roots.

Like Will, I don't do anything to roots that are cut.

I tend to follow mother natures example. In the course of natural events, trees get knocked down, ripped up and tossed around. As long as they land with their roots in the soil they dig in and continue. No rootone, no superthrive, nothing but air and water. Good enough for Mom is good enough for me.

Jim-
thank you for the horticultural knowledge, I now remember I had read somewhere that the different auxins in the various rooting powders simply speed up cell division not alter cell diferentiation, or it could be that one, Like IBA does that and the other (which is in rootone and the name escapes me) does the other as you suggest or vice versa. Its a bit beyond me, honestly. I have one more large Elm to collect from my property (once the deluge stops) and I am going to try using nothing on his big roots and we'll see next spring if there is a difference. I'll tell ya this though, on my large collected Beech, I had to take a reciprocating saw to some of his main roots, I powdered them all with Rootone and at repotting this spring I was shocked that not only did I have Mushroom shaped large complete full callouses but they had produced nice beech buds on them ready to sucker upwards!