Obv non farmer here. It looks to me like you are rolling over a bunch of dried up nothing. I know they are "beans", but like what does the combine thingy actually do? Does it separate the beans from the rest of the plant. Is it all just ground up in to a bean like chowder for something?
Also, I will actually own a farm with these type of beans some day and I just asked this question on a KSU bbs.

Go Cats