You could try spraying them with a fungicide and keeping them deeply watered; other than that, I have no idea.

Good luck.

William, i agree with gld. Things are so wet now fungi is growing rampant. I've got mushrooms all over the yard and woods. One of my roses seem to have rust on it to.
We grew yellow beans one year they were good, milder than the green ones.
vickie

i sprayed with daconil today. i was concerned that the beans were too wet. we haven't had a lot of rain here though.

william