Noticed a sprayer out today.
Beans look to be about 5-7 days out.
Waterhemp, thick and green.
Pretty sure that Gramoxone was being applied. 
We had a field, 21 years ago.
Came out of pasture that year.
What was that weed?
Sprayed it with Gramoxone, so that it would go through the combine.
Took a year or two to learn what Waterhemp actually looks like.