This year I am growing pumpkins and recently several of the seedlings have been coming up. They looked nice and healthy, but this morning, 7 out of 10 have leaves missing, holes, and some looked shriveled. What could be causing this? (pics below) My first thought is that it is some sort of pest or rot, but I'm not sure.
I still have several healthy seedlings, and I want to keep them from suffering the safe fate as these others. Also, is there a way to save the ones that have already been damaged?
Thanks for any help!