Wheat:  Net sales of 29,500 metric tons (MT) for 2020/2021 were down 76 percent from the previous week and 58 percent from the prior 4-week average.   Corn:  Net sales of 555,900 MT for 2020/2021 were up noticeably from the previous week and from the prior 4-week average.  Soybeans:   Net sales of 55,900 MT for 2020/2021 were down 34 percent from the previous week and 65 percent from the prior 4-week average.   Soybean Cake and Meal:   Net sales of 197,400 MT for 2020/2021 were up 4 percent from the previous week and 26 percent from the prior 4-week average.   Soybean Oil:   Net sales of 1,700 MT for 2020/2021 were down noticeably from the previous week, but up 1...