To be blunter...I think you're wrong Totty!
I agree with surbie100 that the rocotos look like they could benefit as mine also have similar 'hairy' stems to tomatos and those hairs might root just like toms. peppers and chillis though??? No hairs so no stem rooting is my opinion.
I'd be happy to be proved wrong but if the argument is that burying stems encourages the buried stems to put out roots I vote no!
Adri
Edit...Adding quote from other forum...
"....Yes, but the pepper plant must be young with a stem that hasn't significantly lignified yet. This i have seen with my own eyes.
Burying a lignified stem too deep is actually bad for a pepper plant now that i remember. It starts to rot from within, and the outer "skin" of the stem separates from the inner core...."
As I pointed out earlier, we are far from the stage when the stems would be woody.
Blunt or not, Totty is correct ( and others).
From commercial growers manual:
"First transplanting: Into the rockwool blocks
At approximately 2 weeks after seeding, when the first true leaves are visible, the seedlings are transplanted into the larger rockwool cubes. The rockwool blocks are well wetted with full strength feed solution, E.C. 2.5 mmhos at approximately 23°C, prior to transplanting. The seedling rockwool plug is rotated 90 degrees as the seedling is placed into the rockwool cube (Figure 25).
This allows for more root development along the length of the young stem. http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/opp4523