Broad bean burn?
Out on a country walk by the middle Severn with my nephew yesterday, we came across an entire field of (small) broad beans which had been 'singed' ie the pods blackened by burning but not incinerated and the beans dried and shrivelled within. First I thought it a random accident in recent hot weather but the burning seemed too regular and controlled, done mechanically. Then we found an adjacent field of beans similarly affected. Is this last ditch pest control or part of the harvesting process or what. Never seen or heard of it before. Any farmers ready to advise?