Very large and possibly record-high U.S. corn (ZCZ25) and soybean (ZSX25) production totals this fall appear to be looming over the grain futures markets. After the Pro Farmer annual crop tour in late August revealed some disease that could slightly nip corn and soybean yields and provided corn and bean markets a boost, grain market traders are back to focusing on very high corn and soybean crop yields. An Allendale crop survey last week pegged the average U.S. corn yield at 187.5 bushels per acre and tot ...