Wheat:  Net sales of 484,400 metric tons (MT) for 2020/2021 were down 17 percent from the previous week and 14 percent from the prior 4-week average.  Corn:  Net sales for the 2020/2021 marketing year, which began September 1, totaled 1,823,300 MT.  Increases were primarily for China (1,194,500 MT, including decreases of 63,000 MT), Japan (255,900 MT), Mexico (215,000 MT, including 8,000 MT switched from Guatemala and decreases of 14,400 MT), Colombia (75,100 MT, including 53,000 MT switched from unknown destinations and decreases of 9,200 MT), and Panama (59,700 MT).  Reductions were primarily for Jamaica (80,100 MT).   A total of 1,250,400 MT in sales were carried over from the 2019/2020 marketing year...