What's up with my green beans?

[Lammie]

My green beans are just starting to make and now they are turning yellow. They are watered regurlarly. We have sandy soil. I thinnned them out a little late. Could that be causing the problem and what can I do to fix it>? Anyone out there got any green bean tips?

 

[randiliana]

I doubt that it is from being late to thin them. Have you pulled some of the yellow ones out? It could be something is eating them off at the roots, or it could be a disease. Also, if you added a bunch of manure to your soil, that could be burning them.