Wheat:  Net sales of 530,600 metric tons (MT) for 2020/2021 were up 5 percent from the previous week and 27 percent from the prior 4-week average.   Corn:  Net sales of 1,225,700 MT for 2020/2021 primarily for Japan (360,100 MT, including 39,600 MT switched from unknown destinations and decreases of 41,500 MT), Mexico (332,700 MT, including decreases of 1,300 MT), unknown destinations (310,900 MT), Colombia (93,400 MT, including 34,000 MT switched from unknown destinations and decreases of 2,900 MT), and Panama (52,600 MT), were offset by reductions for Taiwan (71,800 MT), Peru (24,100 MT), and El Salvador (7,700 MT).  Exports of 934,800 MT were primarily to China (349,900 MT), Mexico (275,400 MT), Colombia (121,600 MT...