Rampant Scots add to Ireland misery
U-20 World Cup Ireland 29 Scotland 45
Ireland will have to win their last match of the U-20 World Cup to avoid relegation into a play-off for next year's event.
Captain Caelan Doris cited problems with "accuracy and indiscipline" as the reasons behind a calamitous collapse to Scotland.
They were second best in most departments as Scotland recovered from a poor start to completely take over as the game wore on.
Flanker Matthew Agnew was prominent in the build-up to out-half Harry Byrne's try and conversion in the 12th minute.
Then, Byrne's delicate grubber encouraged centre Peter Sylvester under the sticks for Byrne's extras to make it 14-3.
From there, Ireland gradually came apart at the seams.
Scottish tight-head Finlay Richardson picked up a brace of converted tries and Irish scrum-half Hugh O'Sullivan was binned for no arms in the tackle.
Logan Trotter finished with ease and Charlie Chapman converted before Byrne's penalty made it 24-17 at the break.
The third quarter was littered with mistakes and misadventure as Ireland's lineout crumbled. This was compounded when replacement Guy Graham shot through the middle to make it a 14-point game.
It went from bad to worse when Trotter instigated a counter which Kyle Rowe turned into a fifth try for Chapman to make it 38-17 in the 58th minute.
There was light from Tommy O'Brien's smart finish and Conor Dean's conversion before Devante Onojaife killed the contest with a sixth try, leaving Jack Daly to close a poor show from the boys in green.