Bump i noticed your question is sliding down the page even though no one has answered you yet. Maybe some knowledgeable person will come along. In the meantime there's always the pepper forum.

Thanks, Donna. It's very possible the container-grown beans haven't been getting enough water. I've never grown them in containers before, and these were definitely an afterthought--and an impulse. I was thinning the ones I planted in the ground, and when I saw the complex root systems on the little plants I hated to throw them out. So I filled the only available container with potting mix and gave them a second chance. I would say they're doing susprisingly well, considering. I'll be more attentive to their water needs. I hope the yellow leaves are what you think they might be. Malica, I'm picking off more than you, but it's still not what I'd call bad. Bluebirdie, thanks! I'm very pleased with my bean arch. I found examples of these on these forums, first in a thread called something like "Show us your trellis" on the Peas & Beans forum, and then from there to another long thread in the Vertical Gardening forum. I was determined to make one for myself, so I bought the cattle panel and the posts.....and then persuaded my son to put it up for me. :-) It was easy, though, and not expensive--less than $35 total. The arch is 8 ft. high, so we can easily walk through it. I'm curious why the beans closer to the house have grown at a much faster rate than those on the other side of the arch. Must have something to do with the movement of the sun.

It sure looks like a mosaic virus, to me. Does the leaf feel a little bit leathery, different from the others? Have you observed any aphids on the beans? I don't want to definitively tell you that this is one of the bean mosaic virus diseases from just one distant picture......but I would sure be suspicious from that type of mottling.

Mulching to prevent soil from reaching the remaining leaves (during rainstorms or watering) is a good idea.