Markets surged to big gains in corn, wheat and soybeans in the first two hours of today's trade but couldn't hold above technical resistance, and the selling came back. General Comments It's been quite a volatile week in the markets, and it ended that way with a very erratic trading day. Trade was quiet and generally a bit lower overnight following yesterday's significant gains. This was the pattern all week. One very strong day followed by another selloff. Funds that still hold big short positions in corn and wheat would be covering shorts one day and selling again the next, or they would sometimes change directions within the same trading session. That's what happened today. Markets surged to big gains in corn, wheat and soybeans in the...