What's happening to these crops?

[Dave2072]

Hello! Me again.

What's this in my crops? The odd dying leaves, seems to be in a lot of them in the raised bed.

[21up]

Could be sunburn maybe watered them and the sun has come out and scorched the leaves just give em a bit longer i have some leaves similar

[Mr Bones]

Looks like leaf miner Dave. Are they beets? Hopefully the plants will get a move on and grow more leaves. If they are beets, the adult fly is quite slow off the mark so you can swat them.

[Scarlet]

Yes, pick them off and bin!