The looming USDA reports and weather uncertainties are combining to constrain trading in grain and soy futures. The general quiet trend continued during today's session in much the same fashion as it did Tuesday. General Comments The looming USDA reports and weather uncertainties are combining to constrain trading in grain and soy futures – at least until the former are released at noon (EDT) Friday. This was evident overnight. Prices for corn, soybeans and winter wheat were just slightly higher in dull, low volume action. The exception, as it has been for the past few weeks, is MGEX spring wheat futures. They resumed their march toward higher levels with the new crop September contract finally penetrating the $7.00 mark. Open interest fo...