Wheat:  Net sales of 167,700 metric tons (MT) for 2020/2021--a marketing-year low--were down 58 percent from the previous week and 67 percent from the prior 4-week average. Corn:  Net sales of 453,300 MT for 2020/2021--a marketing-year low--were down 55 percent from the previous week and 85 percent from the prior 4-week average.  Soybeans:   Net sales of 167,900 MT for 2020/2021 were down 63 percent from the previous week and 72 percent from the prior 4-week average.  Soybean Cake and Meal:  Net sales of 160,200 MT for 2020/2021 were down 50 percent from the previous week and 38 percent from the prior 4-week average.   Soybean Oil:   Net sales of 4,400 MT for 2020/2021 were up 1 per...