I don't know but those look great compared to the leaves of my regular beans. Hard to avoid all disease or afflictions over the Summer. Looks like you have good results, so you can't complain too much.

Agree. Seems like pretty decent leaves for late summer.

Some leaf yellowing is normal when the soybeans begin to fatten up - which judging by the photos, appears to be the case. Leaf yellowing will probably expand soon, to encompass entire leaves, for the whole row. Watch for any sign of pod yellowing, and be prepared to harvest when that happens. You might even want to test steam a few pods now, to see if the beans are mature enough for your taste.

Thanks, this one I was not to worried about - except that it looked like the spots that come on lots of different things from squash bugs. I get them on peppers, tomatoes, corn and I have seen them on edamame.