Corn prices chewed back and forth in a narrow 5-cent range before closing slightly lower, while the soy complex was an island of strength among commodities. General Comments Trading in grain and soy futures resumed Monday evening following the long weekend. Price action was mixed, and volume was unimpressive. However, corn, wheat and soybean prices all managed to edge higher by the time the overnight session ended. The failure of corn and soybean futures to hit new lows probably encouraged some short covering and profit taking. There has been a pattern recently in which grain and soy prices firm overnight, but fade lower during the day session. We are not sure there is a specific fundamental reason for this. Maybe it is because the overni...