Wheat futures tried to sustain a small rally today, but that effort didn't uncover enough buying to offset the weakness in soybeans and eventual weakness in corn. General Comments Today being the last day of July as well as Friday perhaps brought a calmer trade to today's markets. Prices started slightly better overnight, but those small gains didn't last long in quiet trade. Soybeans led markets lower today after USDA announced the cancellation of 200,000 MT of old crop soybean sales to China. It also reported sales of 108,000 MT of corn to Mexico and 127,000 MT of wheat (white, hard red winter and hard red spring) to "unknown."Weather continues to look mostly benign across the U.S. August will start with above-normal temperatures and no...