Friend of mine has asked what's happening to his spring beans. The photo above shows the start of what seems to kill the bean. It is affecting the whole field. His first taught was spray drift from a neighbour. But agronomist says that whole field would not be affected. As it's a funny shape field. It was doing well but suddenly is disappearing. Any ideas. Crop had slurry ploughed in before sowing. And has not been sprayed yet.