Picked up a new farm last year, put it to corn and it ended up being a lot weedier than I thought it was going to be, our spring weather last year didn't help any. Pigweed and waterhemp were the big ones, mostly the pigweed though, basically no grass. Its going to corn again to help get the weeds under control. 

Whats a good 2 or maybe even 3 pass system that's killer on these weeds? Its no till and basically a step above beach sand. I want them dead, they cost me about 10bu/acre on average.