General Comments Grain and soy prices closed weaker in another low volume day session following the trend established earlier in overnight trade. More liquidation selling by longs and technical weakness led the selling. Also, there is the assumption that no matter how bad the corn and soybean crops may be, the new harvest will soon bring on additional supplies to help fill demand. With 41 percent of the corn crop already rated as mature by last weekend and 10 percent already harvested (a record for the date), the corn harvest promises to proceed at a rapid, record pace, weather permitting.Corn exports are lagging and ethanol demand for corn appears to be easing slightly, so no matter how small the corn crop may be, newly harvested corn s...