trying to figure out what is wrong w my bush beans!

[going green]

I have green bean plants that have I have already picked a few off of. This morning I noticed that the bottom leaves of some of my plants are turning brown. Spots on the leaves with some yellow. I have researched and determined that it is not Mosaic Virus.
Can anyone help? is this maybe a lack of some nutrient, too much water (it has rained non-stop) or any other suggestions.

Thanks a bunch
carolyn

[2cents]

photos would help.

some yellowing of bean plants is normal.
once they have reproduced(given some beans) the plant thinks it has done its job and will begin to die off.
I usually get 3 pickings off of my bush beans.
a small 1st, large main pick, then pull the plants with a moderate last pick.

[Gary350]

Some yellowing is normal after the first picking. You get about 90% your crop on the first picking..........usually. Depending on how late in the season you planted, how hot and dry it is now, determines what you will get on the 2nd picking. Some of the leaves turn yellow this time of the year when it is hot and dry.