Wheat:  Net sales of 616,700 metric tons (MT) for 2020/2021 were down 19 percent from the previous week, but up 24 percent from the prior 4-week average.  Corn:  Net sales of 220,600 MT for 2019/2020 were down 76 percent from the previous week and 56 percent from the prior 4-week average.  Soybeans:  Net sales of 365,200 MT for 2019/2020 were up 17 percent from the previous week, but down 31 percent from the prior 4-week average.  Soybean Cake and Meal:  Net sales of 45,300 MT for 2019/2020--a marketing-year low--were down 74 percent from the previous week and 65 percent from the prior 4-week average.  Soybean Oil:  Net sales of 20,200 MT for 2019/2020 primarily for Morocco (15,800 MT switche...