Wheat:  Net sales of 276,500 metric tons were reported for delivery in marketing year 2019/2020.   Corn:  Net sales of 175,600 MT for 2018/2019 were down 41 percent from the previous week, but up 42 percent from the prior 4-week average.   Soybeans:  Net sales of 867,600 MT for 2018/2019 were up noticeably from the previous week and from the prior 4-week average.   Soybean Cake and Meal:  Net sales of 16,800 MT for 2018/2019--a marketing-year low--were down 42 percent from the previous week and 82 percent from the prior 4-week average.  Soybean Oil:  Net sales of 19,700 MT for 2018/2019 were up 3 percent from the previous week and 79 percent from the prior 4-week average. ...