Wheat:  Net sales of 82,000 metric tons (MT) for 2020/2021--a marketing-year low--were down 67 percent from the previous week and 75 percent from the prior 4-week average.  Corn:  Net sales of 757,000 MT for 2020/2021 were down 5 percent from the previous week and 54 percent from the prior 4-week average.  Soybeans:   Net sales reductions 92,500 MT for 2020/2021--a marketing-year low--were down noticeably from the previous week and from the prior 4-week average.  Soybean Cake and Meal:   Net sales of 127,700 MT for 2020/2021 were down 9 percent from the previous week and 36 percent from the prior 4-week average.  Soybean Oil:   Net sales of 15,700 MT for 2020/2021 were up notic...