Consecrated Ground, as distinct from Hallowed Ground, likely exists
The paladin's divine sense ability, and the detect good and evil spell, presuppose the existence of both consecrated and desecrated ground. The paladin ability further suggests one way to create them.
you also detect the presence of any place or object that has been consecrated or desecrated, as with the hallow spell.
By saying "as with" the hallow spell, rather than "by" the hallow spell, it is implied that there are other ways to consecrate or desecrate ground. This is further implied by the strict size and shape permitted by the hallow spell but with the DMG description of desecrated ground allowing it to be "of any size".
Both the spell and the ability reveal that objects rather than areas may be consecrated or desecrated as well, an effect that is not brought about by the hallow spell.
Thus it is clearly established that while the hallow spell is one way to produce consecrated or desecrated ground, it is not the only way.
I cannot find any description of the effects of consecrated ground (or a consecrated item) beyond that it can be detected
The DMG describes the only effect of desecrated ground as
Undead standing on desecrated ground have advantage on all saving throws
which is noticeably weaker than the effects of hallow. There is no description that I can find of the effects of consecrated ground (independent of hallow), or of consecrated and desecrated items.
Question: Is there any existing description of the effects of consecrated ground that I have missed?
The related question asks whether ground can be consecrated or desecrated without the use of the hallow spell. I am not asking that; I am assuming that it can. I am asking if there is any published description of what the effects would be of ground that is consecrated but not hallowed.
Reference to means of creating consecrated ground in other editions is not a good answer. Designer notes and commentary outside of official publications hinting at intent or future releases are acceptable.