All the potential weather adversity has seemed to finally awaken fund managers holding huge short futures positions in Chicago wheat and corn as well as a smaller short position in soybean futures. General Comments Yesterday USDA indicated that U.S. corn planting progress jumped to 17 percent and soybean planting stood at 6 percent as of 23 April. This put corn planting close to the five-year average and soybeans above the five-year average, emphasizing just how quickly U.S. farmers can seed these crops when weather cooperates. However, it does not appear that such cooperation will continue much during the next 10 days or so. Intermittent heavy rains are forecast for the Delta and Midwest with totals approaching 5 inches or more. These we...